StepFun opened API access to Step 5 Preview on Sept 20: a proprietary 600B sparse MoE (27B active) with a 1M-token context, vision input, and Artificial Analysis pricing of $1/$2.70 per million tokens (Intelligence Index 44). Company-reported coding scores still trail GPT-6 Astra and Claude Opus 5 on several benches; open weights are planned for Oct 15.
At DevDay (Sept 29), OpenAI expanded Sign in with ChatGPT so Plus/Pro subscribers can burn ChatGPT Work/Codex allowance inside Amp, Devin, Warp, OpenClaw, OpenCode, Notion, Vercel, and other launch partners—with per app weekly caps that stop included usage instead of auto billing the partner…
Anthropic’s claude api skill adds /claude api build eval (guided eval design in your repo) and /claude api hillclimb (one change per round tuning with a held out set to catch overfitting). On an internal support bench, hillclimb lifted search accuracy from 74.4% to 98.9% while cutting cost to about one fifth…
Claude Code 2.1.285 (npm Sept 29) adds CLAUDE CODE DISABLE WEB FETCH to turn off WebFetch and a managed allowedProviders policy so admins can lock machines to Anthropic, Bedrock, Vertex, Foundry, or a cloud gateway. It also ships claude desktop , claude plugin configure , and a fix for URL passwords leaking past log redaction…
Glow Security found 13,000+ internal screenshots from 343 orgs on public GitHub—coding agents hosted before/after UI images there because GitHub has no CLI image upload for private PRs. About a third involved gitshot’s public by default image repo; the rest were agents creating their own public workarounds…
OpenAI’s DevDay MCP Events let ChatGPT plugins subscribe to MCP server updates (messages, comments, status) and trigger automations over verified signed HTTPS webhooks. Servers need MCP 2.0 (protocol 2026 07 28) with events/list, events/subscribe, and events/unsubscribe; polling and streaming aren’t supported…
Spotted something we missed? Start a thread.