AI Agents Now Talk Behind Your Back

Two AI hosts dig into a week where the tools started coordinating with each other. Claude Code sessions can now send messages between running instances, Google's Gemini app crossed one billion monthly users faster than any product in company history, and Grok 4.6 tied OpenAI's best benchmark score at the lowest price ever posted at the frontier. The conversation also covers SurfSense, an open-source research workspace whose citations open the exact source passage, and a prompting technique that turns a chatbot from a cheerleader into a critic.

What's Covered

- Claude Code cross-session messaging: what moves between sessions and what never can

- Gemini's sprint from 950 million to one billion users in under a month

- Grok 4.6 and the falling price of frontier-tier intelligence

- SurfSense as an open-source alternative to NotebookLM

- The Gordon Ramsay treatment: getting honest criticism out of a chatbot

Sources

* Claude Code Docs: Message your other Claude Code sessions

* 9to5Mac: Claude Code now lets sessions talk to each other

* TechCrunch: Google's Gemini app surges to 1 billion users

* 9to5Mac: SpaceXAI releases Grok 4.6

* SpaceXAI: Introducing Grok 4.6

* SurfSense

* XDA-Developers: I tried three open-source NotebookLM alternatives

* The AI Vaults: Sessions That Talk and a Frontier on Sale

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