Claude Code v2.1.219 restores nested subagents — turned off by default just two days earlier — to "depth 3 by default," and introduces a new "fewer than 15" guideline for dynamic workflows. A look at the tug-of-war between autonomy and safety, and where these changes matter most for unattended opera
Claude Code v2.1.219が、2日前に既定オフにした入れ子サブエージェントを「既定で深さ3」へ戻し、動的ワークフローに「15体未満」の目安を新設。自律性と安全性の綱引きと、無人運用での当てどころを整理します。
The latest release of GitHub Copilot CLI can now read the vendor-neutral "Open Plugin Spec" and MCP configuration files. Extensions built for other agents can be carried over as-is, while the default settings for the OS sandbox have moved toward tightening.
GitHub Copilot CLI の最新版が、ベンダー中立の「Open Plugin Spec」と MCP 設定ファイルを読み込めるようになった。他のエージェント向けに作った拡張がそのまま持ち込める一方、OSサンドボックスの初期値は締める方向へ動いた。
OpenAI is rolling out voice control to the ChatGPT desktop app. With full-duplex GPT-Live, you can run multiple Codex/Work agents by voice alone. It speeds up the workflow, but brings new slip-ups too: the ambiguity of spoken instructions and drift in transcription.
OpenAIがChatGPTデスクトップに音声操作を配信。全二重のGPT-Liveで、声だけでCodex/Workの複数エージェントを回せる。段取りは速くなるが、口頭指示の曖昧さと文字起こしのズレという新しい取りこぼしも。
Anthropic released Claude Opus 5 on July 24. At the unchanged $5/$25 pricing, it delivers performance approaching the publicly top-tier Fable 5 and replaces the default Opus in Claude Code. Here's a rundown of the shifts in pricing, benchmarks, and agent operations—along with the caveats to keep in
Anthropicが7月24日にClaude Opus 5を公開。据え置きの$5/$25で公開最上位Fable 5に迫る性能を打ち出し、Claude Codeの既定Opusも置き換え。料金・ベンチ・エージェント運用の変化と留保点を整理します。
On July 22, Cursor announced Cursor Router, which automatically selects the AI model to use for each request. It's said to be up to 50% cheaper than pinning to Opus, but concerns remain — such as it being hard to see which model wrote your code. We break down the cost, mechanics, and caveats.
Cursorが7月22日、リクエストごとに使うAIモデルを自動で選ぶCursor Routerを発表。Opus固定より最大50%安いとされる一方、どのモデルで書いたか見えにくい等の懸念も。コスト・仕組み・注意点を整理する。
OpenAI's Codex 0.145.0 is out. Its /import can now pull in Cursor and Claude Code MCP servers and settings wholesale, lowering the barrier to switching. Multi-Agent V2 also reaches a stable release.
OpenAIのCodex 0.145.0が公開。/importがCursor・Claude CodeのMCPサーバや設定を丸ごと取り込めるようになり、乗り換えの壁が下がった。マルチエージェントV2も安定版へ。