{ "meta": { "researched_at": "2026-08-28", "window_start": "2026-05-30", "window_end": "2026-08-28", "timezone_note": "Window is calendar dates relative to Friday 28 August 2026. GitHub timestamps are UTC; user-facing dates in this report are labeled as published on vendor sites (typically US/PT or vendor-local).", "rubric": { "description": "importance = recency_in_window (0-25) + developer_mindshare (0-40) + practical_impact (0-35). Max 100. Recency scores later-in-window events higher and adds up to +5 for a true new product/model launch vs a follow-on update of an older tool. Mindshare uses only evidence actually retrieved: official press, GitHub stargazers_count from api.github.com, YouTube titles found via search, GitHub Discussions, Hacker News, Cursor forum, and secondary reports of Reddit threads (permalinks included only when retrieved). Practical impact scores whether the ship changed how people write, review, host, or run code in daily workflows. Famous tools that launched before 2026-05-30 appear only when they had a genuinely important in-window release, labeled category=notable_in_window_update.", "components": { "recency_in_window": "0-25", "developer_mindshare": "0-40", "practical_impact": "0-35" } }, "gaps": [ "Cursor 3.0 / Agents Window launched 2026-04-02 — before the window; Origin (2026-08-17) is the in-window Cursor event.", "Google Antigravity 2.0 desktop app launched at I/O 2026-05-19 — 11 days before the window; the in-window event is the 2026-06-18 Gemini CLI consumer cutoff / forced Antigravity CLI migration.", "Cursor Composer 2.5 launched ~2026-05-18 — before the window.", "Aider, Continue.dev, OpenHands, Factory, Sourcegraph Amp, and Google Jules had no primary-source major launch verified inside this window; they are omitted rather than fabricated.", "site:reddit.com WebSearch returned no indexed hits in this environment; Reddit is cited only where a secondary source named a subreddit, or replaced with GitHub Discussions / HN / Cursor forum permalinks that were actually fetched.", "OpenAI gpt-5-6 product page fetch timed out; GPT-5.6 facts use OpenAI help-center model-release notes, ChatGPT Learn changelog, and secondary reports that quote the 2026-07-09 GA date." ], "github_stars_fetched_at": "2026-08-28T09:00:00Z" }, "tools": [ { "rank": 1, "name": "Claude Code", "vendor": "Anthropic", "url": "https://code.claude.com/docs/en/overview", "github_url": "https://github.com/anthropics/claude-code", "launch_or_update_date": "2026-07-24", "category": "notable_in_window_update", "pre_window_origin": "Claude Code 2.0 shipped October 2025; this entry is the in-window product change, not a first launch.", "what_shipped": "On 24 July 2026 Anthropic released Claude Opus 5 and made it the new default on Claude Max (strongest model on Pro), including Claude Code, at $5/$25 per million tokens with a 1M-token context and Fast mode. In week 32 (3–7 August, v2.1.220–v2.1.224) Claude Code added public-beta self-hosted environments for Team/Enterprise cloud sessions, cross-session messaging via ListAgents/SendMessage, and set auto permission mode as the default from 14 August on Pro/Max/Team.", "why_it_matters": "Claude Code is the highest-star terminal coding agent and the default harness for many teams; swapping the default to Opus 5 and letting enterprises run cloud sessions on their own runners changes both quality and where agent compute is allowed to live.", "reddit_signal": "Direct Reddit permalinks were not retrieved. Hacker News thread 'Why does Opus 5 feel worse to work with?' (https://news.ycombinator.com/item?id=49296740) discusses elliptical prose, verbose comments, and capability vs UX. YouTube changelog channels treated v2.1.219 (Opus 5 as default) as the week's main Claude Code event.", "youtube_signal": [ { "title": "Claude Code v2.1.219 — Claude Opus 5 Default", "url": "https://www.youtube.com/watch?v=bWHFnXZ8Pow" }, { "title": "Claude Code 2.1.219 — Opus 5 Arrives as Default", "url": "https://www.youtube.com/watch?v=cejvtf__jOA" }, { "title": "Claude Opus 5 Review: What It Actually Changed on a Real Job", "url": "https://www.youtube.com/watch?v=Gr_QNYJ1mFU" } ], "github_stars": 143244, "score": { "recency": 22, "mindshare": 38, "impact": 34, "total": 94 }, "rank_reason": "Highest combined mindshare and daily-driver impact: Opus 5 became the default coding model inside the most-discussed CLI agent, then self-hosted runners and auto-mode shipped in August.", "sources": [ "https://www.anthropic.com/news/claude-opus-5", "https://code.claude.com/docs/en/whats-new/2026-w32", "https://code.claude.com/docs/en/self-hosted-environments", "https://github.com/anthropics/claude-code", "https://github.com/anthropics/claude-code/releases/tag/v2.1.248", "https://news.ycombinator.com/item?id=49296740" ] }, { "rank": 2, "name": "OpenAI Codex (CLI, desktop mode, GPT-5.6)", "vendor": "OpenAI", "url": "https://openai.com/index/gpt-5-6/", "github_url": "https://github.com/openai/codex", "launch_or_update_date": "2026-07-09", "category": "notable_in_window_update", "pre_window_origin": "Codex CLI launched April 2025 (repo created 2025-04-13). This entry is the 9 July 2026 GPT-5.6 GA plus Codex-app merge into ChatGPT desktop.", "what_shipped": "On 9 July 2026 OpenAI made the GPT-5.6 family (Sol / Terra / Luna) generally available across ChatGPT, Codex, and the API, and merged the standalone Codex desktop app into the ChatGPT desktop app as a dedicated Codex mode (Chat / Work / Codex) on macOS and Windows, including Free. Codex CLI continued rapid Rust releases in-window; 0.149.0 (20 August) added an interactive `codex agents` dashboard and `codex queue`.", "why_it_matters": "Codex is the other half of the 2026 terminal-agent duopoly. A new frontier default (Sol) plus putting Codex inside the ChatGPT desktop app on every plan, including Free, is the largest distribution change for OpenAI coding agents in the window.", "reddit_signal": "Direct Reddit permalinks were not retrieved. Comparison posts throughout July–August treat Codex-on-GPT-5.6-Sol vs Claude-Code-on-Opus-5 as the live terminal choice; ChatGPT Learn changelog is the primary product note for the desktop merge.", "youtube_signal": [ { "title": "Claude Code vs Codex vs Cursor (an honest comparison)", "url": "https://www.youtube.com/watch?v=JMYspR42HFM" }, { "title": "Cursor vs Claude Code vs Codex: what actually matters", "url": "https://www.youtube.com/watch?v=kITAfhsubkk" } ], "github_stars": 119398, "score": { "recency": 18, "mindshare": 37, "impact": 34, "total": 89 }, "rank_reason": "Second only to Claude Code on GitHub stars and comparison volume; GPT-5.6 GA and the ChatGPT-desktop Codex mode are the in-window market events.", "sources": [ "https://openai.com/index/gpt-5-6/", "https://help.openai.com/en/articles/9624314-model-release-notes/", "https://learn.chatgpt.com/docs/whats-new", "https://github.com/openai/codex", "https://github.com/openai/codex/releases/tag/rust-v0.149.0", "https://github.com/openai/codex/releases/tag/rust-v0.150.1" ] }, { "rank": 3, "name": "Cursor Origin", "vendor": "Anysphere / Cursor (SpaceX)", "url": "https://cursor.com/docs/origin", "github_url": null, "launch_or_update_date": "2026-08-17", "category": "new_launch", "what_shipped": "Cursor's changelog dated 17 August 2026 says Origin began rolling out in early beta on all paid plans: a git forge inside Cursor for repos, pull requests, code browsing, and GitHub sync. Native Origin repos are hosted by Cursor; mirrored GitHub repos keep GitHub as the source of truth for pushes. Agent-native features are explicitly deferred ('ship soon'). A 27 August changelog note says Cloud Agents no longer require a connected GitHub/SCM and can save work to Origin.", "why_it_matters": "This is the first time a leading AI coding IDE ships its own code host, putting agents, PRs, and git in one surface. Launch-week coverage coincided with a multi-hour GitHub outage; Cursor's own docs still describe GitHub as source of truth for synced repos.", "reddit_signal": "InfoQ reports mixed reaction, citing r/github (Origin as a land-grab after the SpaceX acquisition) and r/cursor (Origin bound to Cursor accounts). Permalinks were not retrieved. Official discussion: https://forum.cursor.com/t/origin-code-hosting/168670 (Colin, 17 August 2026).", "youtube_signal": [], "github_stars": null, "score": { "recency": 25, "mindshare": 28, "impact": 31, "total": 84 }, "rank_reason": "Newest high-impact product in the window: code hosting inside the dominant AI IDE, with TechCrunch/VentureBeat/InfoQ coverage and a same-day GitHub outage amplifying attention.", "sources": [ "https://cursor.com/changelog/origin-code-hosting", "https://cursor.com/docs/origin", "https://forum.cursor.com/t/origin-code-hosting/168670", "https://techcrunch.com/2026/08/18/cursor-capitalizes-on-github-frustration-launches-rival-hosting-platform/", "https://www.infoq.com/news/2026/08/cursor-origin-alternative-github/" ] }, { "rank": 4, "name": "Kimi K3", "vendor": "Moonshot AI", "url": "https://www.kimi.com/blog/kimi-k3", "github_url": "https://github.com/MoonshotAI/Kimi-K3", "launch_or_update_date": "2026-07-16", "category": "new_launch", "what_shipped": "Moonshot's official blog introduced Kimi K3 as a 2.8T-parameter open 3T-class model with native vision and a 1M-token context, available 16 July 2026 on Kimi.com, Kimi Work, Kimi Code, and the Kimi API (weights promised by 27 July). GitHub repo MoonshotAI/Kimi-K3 was created 2026-07-27. GitHub Copilot changelog later listed Kimi K3 rolling out to Copilot plans in the week of 10 August.", "why_it_matters": "Largest open-weight model of the summer and a drop-in coding backend (Kimi Code, Copilot, Claude-Code-compatible harnesses). Vendor blog positions it behind Fable 5 / GPT-5.6 Sol overall but competitive on long-horizon coding and visual-in-the-loop work.", "reddit_signal": "Direct Reddit permalinks were not retrieved. GitHub Copilot's 10 August weekly notes and independent coding-model roundups treated K3 as the new open-weight ceiling.", "youtube_signal": [], "github_stars": 8651, "score": { "recency": 20, "mindshare": 30, "impact": 32, "total": 82 }, "rank_reason": "True new open-weight coding model with first-party Kimi Code harness and Copilot distribution; 8.6k GitHub stars in about a month.", "sources": [ "https://www.kimi.com/blog/kimi-k3", "https://www.kimi.com/news/kimi-k3", "https://github.com/MoonshotAI/Kimi-K3", "https://github.blog/changelog/2026-08-13-github-copilot-weekly-releases-august-10/" ] }, { "rank": 5, "name": "Muse Code", "vendor": "Meta Superintelligence Labs", "url": "https://dev.meta.ai/docs/muse-code", "github_url": null, "launch_or_update_date": "2026-08-05", "category": "new_launch", "what_shipped": "Meta released Muse Code in public beta on 5 August 2026: a terminal/CI coding agent on Muse Spark 1.2. Official docs: install via `curl -fsSL https://dev.meta.ai/install.sh | sh`, interactive `muse` or headless `muse exec`, OS sandbox and approvals on from first run. TechCrunch quotes Zuckerberg on complete SWE tasks across large repos and parallel sub-agents in isolated worktrees.", "why_it_matters": "First Meta-branded Claude-Code-class harness, co-trained with Spark 1.2, priced to undercut frontier agents. Closed-source curl installer; comparison writeups flag a contributor tier that allows training on user data.", "reddit_signal": "Direct Reddit permalinks were not retrieved. Multiple August comparison essays (Muse Code vs Claude Code) appeared within a week of launch; TechCrunch and WSJ quotes via TechCrunch are the primary press signal.", "youtube_signal": [], "github_stars": null, "score": { "recency": 24, "mindshare": 26, "impact": 30, "total": 80 }, "rank_reason": "True new terminal agent from a frontier lab, late in the window, explicitly aimed at Codex/Claude Code on cost.", "sources": [ "https://techcrunch.com/2026/08/05/meta-launches-muse-code-an-ai-agent-for-large-code-bases/", "https://dev.meta.ai/docs/muse-code", "https://dev.meta.ai/docs/overview/", "https://dev.meta.ai/docs/models" ] }, { "rank": 6, "name": "GitHub Copilot (Agent Plugins 1.0, new models, CLI)", "vendor": "GitHub / Microsoft", "url": "https://github.blog/changelog/2026-08-12-agent-plugins-1-0-in-vs-code-copilot-cli-and-the-copilot-app/", "github_url": null, "launch_or_update_date": "2026-08-12", "category": "notable_in_window_update", "pre_window_origin": "GitHub Copilot and Copilot CLI predate the window. In-window: Agent Plugins 1.0 GA, Kimi K3, MAI-Code-1.1-Flash, Grok 4.6 (14 August), and Copilot CLI /tasks, queued prompts, headless autopilot, /rewind.", "what_shipped": "GitHub's 12 August changelog: Agent Plugins 1.0 generally available in VS Code, Copilot CLI, Copilot SDK, and the Copilot app after the 6 August spec publication with AWS, Anysphere, Microsoft, OpenAI, and Vercel (Google joined as core maintainer). Week-of-10-August notes add Kimi K3 and MAI-Code-1.1-Flash; 14 August adds Grok 4.6. Copilot CLI gained /tasks subagent management, queued prompts, combined --plan + --mode autopilot in headless -p, and /rewind.", "why_it_matters": "Copilot remains the default AI in VS Code/GitHub. Making plugins portable across VS Code, CLI, and the Copilot app, plus first-class third-party models (Kimi K3, Grok 4.6), is the enterprise-scale in-window change.", "reddit_signal": "Direct Reddit permalinks were not retrieved. GitHub Changelog and DevOps.com coverage are the primary discussion sources retrieved.", "youtube_signal": [], "github_stars": null, "score": { "recency": 22, "mindshare": 32, "impact": 26, "total": 80 }, "rank_reason": "Largest installed base of any coding assistant; Agent Plugins GA plus multi-model expansion is the in-window Copilot event.", "sources": [ "https://github.blog/changelog/2026-08-12-agent-plugins-1-0-in-vs-code-copilot-cli-and-the-copilot-app/", "https://github.blog/changelog/2026-08-13-github-copilot-weekly-releases-august-10/", "https://x.ai/news/grok-4-6-github-copilot" ] }, { "rank": 7, "name": "Grok 4.6", "vendor": "SpaceXAI (xAI)", "url": "https://x.ai/news/grok-4-6", "github_url": null, "launch_or_update_date": "2026-08-12", "category": "new_launch", "what_shipped": "SpaceXAI's 12 August 2026 post: Grok 4.6 is a continued train of Grok 4.5 focused on long-running agents and visual/interactive work. Available day one in Cursor and Grok Build (2x included usage for the first week), plus API, OpenRouter, Vercel, and Cloudflare. Pricing starts at $2/$6 per million tokens. 14 August: Grok 4.6 in GitHub Copilot.", "why_it_matters": "A frontier coding model that landed simultaneously in Cursor, Grok Build, and then Copilot, at a lower list price than Opus 5 / GPT-5.6 Sol. Official evals claim a match with GPT-5.6 Sol on the Artificial Analysis Intelligence Index.", "reddit_signal": "Direct Reddit permalinks were not retrieved. Distribution via Cursor and Copilot is the mindshare path.", "youtube_signal": [], "github_stars": null, "score": { "recency": 23, "mindshare": 27, "impact": 28, "total": 78 }, "rank_reason": "New frontier coding model with immediate Cursor/Copilot/Grok Build distribution and aggressive pricing.", "sources": [ "https://x.ai/news/grok-4-6", "https://x.ai/news/grok-4-6-github-copilot" ] }, { "rank": 8, "name": "Devin Desktop (formerly Windsurf)", "vendor": "Cognition", "url": "https://devin.ai/blog/windsurf-is-now-devin-desktop", "github_url": null, "launch_or_update_date": "2026-06-02", "category": "notable_in_window_update", "pre_window_origin": "Windsurf IDE and Devin cloud agent predate the window. 2 June 2026 OTA rebranded Windsurf to Devin Desktop.", "what_shipped": "Official FAQ: on 2 June 2026 Windsurf became Devin Desktop via OTA update. Agent Command Center (Spaces, Kanban, multi-agent) is the default surface; the full IDE remains. Devin Local succeeds Cascade (up to 30% better token efficiency, subagents, sandboxing); Cascade remained available through July. Launch post: ACP support so Codex, Claude Agent, OpenCode, and other ACP agents run inside the editor. App binary renamed Devin.app / Devin.exe.", "why_it_matters": "Unifies a top AI IDE with Devin Cloud/CLI/Review under one brand and makes a multi-agent command center the default, with an open client protocol for rival agents.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [ { "title": "Windsurf Becomes Devin Desktop in 2026: What Changed", "url": "https://www.youtube.com/watch?v=dCcchCYJ5no" } ], "github_stars": null, "score": { "recency": 12, "mindshare": 29, "impact": 30, "total": 71 }, "rank_reason": "Major in-window rebrand and local-agent rewrite of Windsurf; slightly older than August launches so recency is lower.", "sources": [ "https://docs.devin.ai/desktop/devin-desktop-faq", "https://devin.ai/blog/windsurf-is-now-devin-desktop", "https://www.youtube.com/watch?v=dCcchCYJ5no" ] }, { "rank": 9, "name": "GLM-5.2", "vendor": "Z.ai (Zhipu AI)", "url": "https://z.ai/blog/glm-5.2", "github_url": "https://github.com/zai-org/GLM-5", "launch_or_update_date": "2026-06-16", "category": "new_launch", "what_shipped": "Z.ai blog dated 2026-06-16: GLM-5.2 is a flagship long-horizon coding model with a claimed solid 1M-token context, IndexShare sparse attention, effort levels High/Max, and MIT-licensed open weights on Hugging Face/ModelScope. Rolled out to GLM Coding Plan users (use model name GLM-5.2, or GLM-5.2[1m] in Claude Code). Vendor table: 81.0 Terminal-Bench 2.1 (Terminus-2) vs 63.5 for GLM-5.1; 62.1 SWE-bench Pro.", "why_it_matters": "The open-weight coding model that actually shipped downloadable MIT weights in-window, plug-compatible with Claude Code / OpenCode / ZCode, and the base later post-trained into GLM-5.3.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 7078, "score": { "recency": 14, "mindshare": 26, "impact": 30, "total": 70 }, "rank_reason": "First MIT 1M-context open coding model of the window with real weights; slightly older than Kimi K3 so ranks below it on recency and Copilot distribution.", "sources": [ "https://z.ai/blog/glm-5.2", "https://github.com/zai-org/GLM-5", "https://docs.z.ai/guides/llm/glm-5.2" ] }, { "rank": 10, "name": "Agent Plugins 1.0", "vendor": "Agent Plugins TSC (AWS, Anysphere/Cursor, Microsoft, OpenAI, Vercel; Google joined as core maintainer)", "url": "https://agent-plugins.org", "github_url": "https://github.com/agentplugins/agent-plugins-spec", "launch_or_update_date": "2026-08-06", "category": "new_launch", "what_shipped": "Vercel blog (published 6 August 2026, author Jonathan Hefner): Agent Plugins 1.0.0 is a vendor-neutral directory format (`plugin.json`, `skills/`, optional `mcp.json`) for packaging Agent Skills and MCP servers. Day-one clients listed: ChatGPT and Codex, Cursor, GitHub Copilot, Kiro, VS Code. GitHub Copilot made the spec GA across VS Code/CLI/SDK/app on 12 August.", "why_it_matters": "Stops teams from republishing the same skill/MCP pack per agent. The rare case this summer where competing coding products agreed on a packaging contract.", "reddit_signal": "Direct Reddit permalinks were not retrieved. GitHub Copilot changelog and Vercel blog are the primary discussion sources.", "youtube_signal": [], "github_stars": 1179, "score": { "recency": 23, "mindshare": 22, "impact": 25, "total": 70 }, "rank_reason": "Infrastructure, not a coding UI, but it changes how extensions travel across Cursor/Copilot/Codex/Kiro.", "sources": [ "https://vercel.com/blog/introducing-agent-plugins", "https://github.com/agentplugins/agent-plugins-spec", "https://github.blog/changelog/2026-08-12-agent-plugins-1-0-in-vs-code-copilot-cli-and-the-copilot-app/" ] }, { "rank": 11, "name": "Google Antigravity CLI (Gemini CLI consumer sunset)", "vendor": "Google", "url": "https://antigravity.google/docs/cli/gcli-migration/", "github_url": "https://github.com/google-gemini/gemini-cli", "launch_or_update_date": "2026-06-18", "category": "notable_in_window_update", "pre_window_origin": "Antigravity IDE launched November 2025; Antigravity 2.0 desktop + CLI were announced at I/O 2026-05-19 (11 days before this window). The in-window event is the 18 June consumer cutoff.", "what_shipped": "Maintainer post on google-gemini/gemini-cli discussion #28017 (18 June 2026): Gemini CLI stopped serving Google AI Pro, Ultra, and free individual accounts; enterprise Code Assist licenses and API-key auth unaffected. Replacement is Antigravity CLI (`agy`), installer at antigravity.google/cli/install.sh, with automatic import of skills, MCP, agents, and GEMINI.md. Official migration docs describe plugin import, skills path changes, and mcp_config.json.", "why_it_matters": "Ended the only major free-tier terminal coding agent for individuals and forced a closed-source Go CLI. The GitHub announcement drew strongly negative replies (lost context, missing feature parity, quota unification).", "reddit_signal": "Direct Reddit permalinks were not retrieved. Primary community thread: https://github.com/google-gemini/gemini-cli/discussions/28017 (21 comments; reactions include 74 thumbs-down on the announcement).", "youtube_signal": [], "github_stars": 106723, "score": { "recency": 13, "mindshare": 33, "impact": 24, "total": 70 }, "rank_reason": "Huge GitHub star base and a forced migration that actually broke daily workflows; scored as an update because Antigravity 2.0 itself launched 19 May.", "sources": [ "https://github.com/google-gemini/gemini-cli/discussions/28017", "https://antigravity.google/docs/cli/gcli-migration/", "https://antigravity.google/blog/introducing-google-antigravity-2", "https://developers.googleblog.com/all-the-news-from-the-google-io-2026-developer-keynote/" ] }, { "rank": 12, "name": "Warp Agent CLI", "vendor": "Warp", "url": "https://www.warp.dev/blog/introducing-the-warp-agent-cli-coding-agent", "github_url": null, "launch_or_update_date": "2026-08-04", "category": "new_launch", "what_shipped": "Warp's launch post (listed as 4 August 2026 on Warp's blog index) introduces a standalone Warp Agent CLI for Ghostty, iTerm2, VS Code, Windows/Mac terminals, and SSH without a remote binary. Same multi-model agent as Warp Terminal: auto-routing, cloud-agent handoff, multi-agent orchestration, pty muxing so the agent can drive full-screen apps (sqlite, vim, gdb). Install: `curl -fsSL https://app.warp.dev/download/agent-cli | bash`. Oz CLI (`oz`) is deprecated in favor of the `warp` binary.", "why_it_matters": "Takes Warp's terminal-native agent out of the Warp app, competing directly with Claude Code / Codex CLI while keeping Warp's block/PTY model.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": null, "score": { "recency": 23, "mindshare": 18, "impact": 24, "total": 65 }, "rank_reason": "True new standalone CLI from an established terminal vendor; less viral than Meta/Cursor launches but a real workflow product.", "sources": [ "https://www.warp.dev/blog/introducing-the-warp-agent-cli-coding-agent", "https://docs.warp.dev/agents/cli/", "https://docs.warp.dev/reference/cli/" ] }, { "rank": 13, "name": "Qwen 3.8 (Max + open weights)", "vendor": "Alibaba / Qwen Team", "url": "https://qwen.ai/blog/qwen3.8-max", "github_url": "https://github.com/QwenLM/Qwen3.8", "launch_or_update_date": "2026-08-12", "category": "new_launch", "what_shipped": "Qwen GitHub README: 2026-08-12 Qwen3.8-2.4T-A95B weights on Hugging Face/ModelScope; 2026-08-14 Qwen3.8-27B (Apache 2.0). README describes this as the first Qwen-Max-class open release, aimed at coding, professional work, and long-horizon agents. Secondary aggregators date the hosted Qwen 3.8-Max API around 3 August; the official blog page at qwen.ai/blog/qwen3.8-max did not return full article body to this fetcher.", "why_it_matters": "Alibaba open-weighted a Max-class 2.4T coder plus a 27B Apache checkpoint that fits a single GPU — a practical self-host path next to Kimi K3 / GLM-5.2.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 4004, "score": { "recency": 22, "mindshare": 20, "impact": 22, "total": 64 }, "rank_reason": "Verified in-window open-weight drop from GitHub dates; Max-class API blog body was not fully fetchable so this ranks below Kimi/GLM on documented coding evals.", "sources": [ "https://github.com/QwenLM/Qwen3.8", "https://qwen.ai/blog/qwen3.8-max" ] }, { "rank": 14, "name": "Grok Build (open source)", "vendor": "SpaceXAI (xAI)", "url": "https://x.ai/news/grok-build-open-source", "github_url": "https://github.com/xai-org/grok-build", "launch_or_update_date": "2026-07-15", "category": "notable_in_window_update", "pre_window_origin": "Grok Build existed as a product before this window; 15 July 2026 is the open-source of the harness/TUI.", "what_shipped": "SpaceXAI post 15 July 2026: Grok Build coding agent and TUI source published. Includes agent loop, tools, terminal UI (plan review, inline diffs), and extension system (skills, plugins, hooks, MCP, subagents). Local-first: compile, point at local inference via config.toml. Repo created 2026-07-14; Apache-2.0.", "why_it_matters": "A frontier-lab coding harness you can audit and run locally — rare among Claude Code / Muse Code closed binaries. 26k GitHub stars in ~6 weeks.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 26171, "score": { "recency": 16, "mindshare": 28, "impact": 20, "total": 64 }, "rank_reason": "Open-sourcing an existing harness is an update, but 26k stars and local-first Grok 4.6 pairing keep it in the top 15.", "sources": [ "https://x.ai/news/grok-build-open-source", "https://github.com/xai-org/grok-build" ] }, { "rank": 15, "name": "GLM-5.3", "vendor": "Z.ai (Zhipu AI)", "url": "https://z.ai/blog/glm-5.3", "github_url": "https://github.com/zai-org/GLM-5", "launch_or_update_date": "2026-08-14", "category": "notable_in_window_update", "pre_window_origin": "Same base as GLM-5.2 (16 June). Official blog: every gain is post-training. Weights promised ~two weeks after 14 August launch (not confirmed published as of this research day).", "what_shipped": "Z.ai blog 2026-08-14: GLM-5.3 uses the GLM-5.2 base with scaled post-training. Vendor claims 50% gain on in-house Z.ai Code Bench, open-source SOTA on Terminal Bench 3.0 and Agents' Last Exam; thinking cannot be disabled (low/high/max). Live on GLM Coding Plan and ZCode; API thinking.type=disabled must migrate. Weights 'in two weeks after launch'.", "why_it_matters": "Largest open-weight coding jump of August if the evals hold, but until weights land it is a hosted-plan upgrade of GLM-5.2, not a new downloadable model.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 7078, "score": { "recency": 23, "mindshare": 18, "impact": 22, "total": 63 }, "rank_reason": "Important in-window update of GLM-5.2; ranked below 5.2 because weights were still pending on 28 August per the launch post.", "sources": [ "https://z.ai/blog/glm-5.3", "https://github.com/zai-org/GLM-5" ] }, { "rank": 16, "name": "Muse Glimmer", "vendor": "Meta Superintelligence Labs", "url": "https://research.meta.ai/blog/introducing-muse-glimmer-open-agentic-model", "github_url": null, "launch_or_update_date": "2026-08-10", "category": "new_launch", "what_shipped": "Meta research blog: Muse Glimmer is a ~30B Apache-2.0 open-weight agentic model distilled from Muse Spark for always-on local agents (tool use, local coding, LLM-as-judge) on a Mac or single consumer GPU. Developer blog dated 12 August. Hugging Face card: model release date August 2026, text+image in / text out, 131k+ context. MarkTechPost dated the release 10 August 2026.", "why_it_matters": "The local-agent counterpart to Muse Code: no API key, Apache 2.0, sized for a 24–32 GB GPU. Changes who can run an agentic coder without sending code to a lab.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": null, "score": { "recency": 22, "mindshare": 16, "impact": 22, "total": 60 }, "rank_reason": "True new open-weight coding/agent model; smaller mindshare than Kimi/GLM because it is a 30B local model, not a frontier MoE.", "sources": [ "https://research.meta.ai/blog/introducing-muse-glimmer-open-agentic-model", "https://developer.meta.com/ai/resources/blog/build-with-muse-glimmer/", "https://huggingface.co/meta-models/Muse-Glimmer-30B", "https://www.marktechpost.com/2026/08/10/meta-ai-releases-muse-glimmer/" ] }, { "rank": 17, "name": "Kiro Crew", "vendor": "Amazon Web Services / Kiro", "url": "https://kiro.dev/crew/", "github_url": "https://github.com/kirodotdev/KiroCrew", "launch_or_update_date": "2026-08-04", "category": "new_launch", "what_shipped": "AWS open-sourced Kiro Crew (Apache 2.0) as a persistent multi-agent workspace: desktop app, web dashboard, CLI, schedules/heartbeats, Slack/Discord. Repo created 2026-07-16; community writeups date the public launch 4 August 2026. Runs on proprietary Kiro CLI at launch; supports ACP and MCP. Reference apps: DevFleets, Issue Radar, Task Runner.", "why_it_matters": "AWS's answer to unattended engineering teams — open orchestration, but initially locked to Kiro CLI, which limits drop-in use with Claude Code/Codex.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 3338, "score": { "recency": 22, "mindshare": 14, "impact": 20, "total": 56 }, "rank_reason": "True new OSS orchestrator from AWS, but smaller mindshare and a Kiro-CLI dependency at launch.", "sources": [ "https://github.com/kirodotdev/KiroCrew", "https://kiro.dev/", "https://www.infoworld.com/article/4204961/awss-kiro-crew-aims-to-turn-ai-coding-agents-into-autonomous-engineering-teams.html", "https://dev.to/aws-builders/introducing-kiro-crew-awss-open-source-ai-agent-orchestrator-1e63" ] }, { "rank": 18, "name": "OpenCode Desktop (tabs)", "vendor": "Anomaly / OpenCode", "url": "https://opencode.ai", "github_url": "https://github.com/anomalyco/opencode", "launch_or_update_date": "2026-07-15", "category": "notable_in_window_update", "pre_window_origin": "OpenCode TUI/desktop predates the window (repo created 2025-04-30). In-window: 15 July desktop tabs rebuild; v1.18.19 on 20 August.", "what_shipped": "15 July 2026: OpenCode announced Introducing Tabs — Desktop rebuilt around session tabs and cross-project resume; git worktrees not yet in the new UI (legacy layout in Settings for a limited time). GitHub release v1.18.19 (20 August) added Cloudflare AI Gateway passthroughs and Codex rate-limit matching. Repo has 202,048 stars as fetched.", "why_it_matters": "Highest-star open coding agent repo in this research set; the in-window ship is incremental (tabs/worktrees), so it ranks as an update rather than a new product.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 202048, "score": { "recency": 16, "mindshare": 25, "impact": 12, "total": 53 }, "rank_reason": "Highest GitHub star count in this set (202k). In-window change is a desktop tabs rebuild rather than a new agent class, so it sits with other notable updates of older tools.", "sources": [ "https://github.com/anomalyco/opencode", "https://github.com/anomalyco/opencode/releases/tag/v1.18.19", "https://explainx.ai/blog/opencode-desktop-tabs-sessions-worktrees-july-2026" ] }, { "rank": 19, "name": "Cline 4.0", "vendor": "Cline", "url": "https://cline.bot", "github_url": "https://github.com/cline/cline", "launch_or_update_date": "2026-06-26", "category": "notable_in_window_update", "pre_window_origin": "Cline VS Code extension/CLI existed through 3.x (v3.89.2 on 11 June). 4.0.0 is the in-window major version.", "what_shipped": "GitHub release v4.0.0 (26 June 2026) migrated the VS Code extension onto the shared Cline SDK session layer (agent turns, tools, Plan/Act, MCP, checkpoints). Secondary coverage: Customize marketplace, ClinePass billing, queued prompts; subagents temporarily disabled. AI/TLDR reports 4.0.1 (28 June) rolled the marketplace extension back to the 3.89.2 codebase under a higher version while SDK work continued on main.", "why_it_matters": "Attempted to turn a 67k-star open IDE agent into a multi-surface SDK platform; the two-day rollback is itself a market signal about rewrite risk.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": 67048, "score": { "recency": 12, "mindshare": 24, "impact": 14, "total": 50 }, "rank_reason": "Large existing community and a real 4.0 attempt, but the two-day rollback caps practical impact — ranked just below OpenCode's in-window desktop rebuild.", "sources": [ "https://github.com/cline/cline/releases/tag/v4.0.0", "https://typescript.news/articles/2026-06-27-cline-4-0-sdk-rewrite-clinepass-customize-marketplace-plugins", "https://ai-tldr.dev/releases/cline-v4-0-rollback/" ] }, { "rank": 20, "name": "Kimi Code CLI", "vendor": "Moonshot AI", "url": "https://www.kimi.com/blog/kimi-k3", "github_url": "https://github.com/MoonshotAI/kimi-cli", "launch_or_update_date": "2026-07-16", "category": "notable_in_window_update", "pre_window_origin": "Kimi Code / kimi-cli existed with earlier Kimi K2.x models (K2.6 20 April 2026). In-window event is K3 becoming the coding model (`/model`) on 16 July.", "what_shipped": "Kimi K3 tech blog: 'Code with Kimi K3: Run Kimi Code in your terminal and select Kimi K3 using the /model command.' Help-center timeline lists 16 July 2026 as K3 release powering chat, Agent, and Agent Swarm via Kimi Code among other surfaces. MoonshotAI/kimi-cli is the public CLI repo (star count not re-fetched in this pass after a failed API call; org page snapshot during research listed 11,076 stars — not used in github_stars field because the live API fetch did not succeed).", "why_it_matters": "K3's practical coding surface for terminal users. Listed separately from the model so the harness update is visible, but it is not a new product.", "reddit_signal": "Direct Reddit permalinks were not retrieved.", "youtube_signal": [], "github_stars": null, "score": { "recency": 18, "mindshare": 16, "impact": 16, "total": 50 }, "rank_reason": "Fill slot: verified in-window model switch for an existing CLI harness, clearly labeled as an update of Kimi Code rather than a new tool.", "sources": [ "https://www.kimi.com/blog/kimi-k3", "https://www.kimi.com/help/agent/agent-overview", "https://github.com/MoonshotAI/kimi-cli" ] } ] }