DAILY AI BRIEF 🗞 — Oct 7

MISTRAL 🔥:
* Mistral released Mistral Large 4 "Le Chonk", a 1T-parameter (49B active) multimodal model, with open weights planned in about three weeks.

GOOGLE 🔥:
* Nano Banana 2.1 is rolling out across the Gemini app, AI Mode, AI Studio, the Gemini API, Flow and Stitch.
* Google released EmbeddingGemma 2, a 740M-parameter open multimodal embedding model under Apache 2.0.
* Google AI Edge launched Foresight, an on-device note-taking app for Mac.

OPENAI 🔥:
* OpenAI launched the Decisions API in beta with gpt-6-luna, returning typed answers 10x faster than the Responses API.
* Auto-review in Codex is now free for everyone signed in with ChatGPT, day two of the 28-day pledge.
* OpenAI published new math results from an unreleased internal frontier model, with many proofs formalized in Lean.
* OpenAI cut its API usage tiers from five to three: Build, Launch and Grow.

ANTHROPIC 🔥:
* Claude for Google Workspace is in public beta, adding a Claude sidebar to Docs, Sheets and Slides.
* Anthropic's expanded Claude for Startups program gives qualifying startups a free year of Claude Team and $1,000 in API credits.
* Claude Code 2.1.292 lets Claude run sub-agents at a chosen effort level.

HARK 🔥:
* Hark, Brett Adcock's new startup, launched Hark Pro widely as a free computer-use AI assistant, with a paid tier for heavy users.

SESAME 🔥:
* Sesame's voice assistant got a new voice model, a dedicated computer for each agent, and Google app and MCP connections.

MICROSOFT 🔥:
* GitHub stacked pull requests are now generally available.