Philschmid's Gemini 4 Carbon dev guide: 1M-token decode and the /swarm multi-agent pattern
_philschmid · x · 2026-11-11
Philschmid et al. released a practical developer guide for Gemini 4 Carbon covering API changes, long decode up to 1M tokens, and multi-agent patterns.
Practical takeaways:
- Upgrading from Argon is nearly free: just change the model id to gemini-4-carbon
- The author uses medium thinkinglevel for almost everything
- For bigger multi-file tasks, the new /swarm preview in Antigravity creates a multi-agent team communicating via a message board — put Carbon on architecture and code review while multiple 3.8 Flash instances work on parallel edits
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