# Google publishes a developer guide for Gemini 4 Carbon

> Original title: We wrote a practical Developer Guide for Gemini 4 Carbon covering API changes, long decode up to 1M tokens, and multi-agent patterns: htt...

- Source: Philipp Schmid
- Published: 2026-11-10T17:37:27.000Z
- Bad Influence: https://badinfluence.news/items/dp5uw4h4foki9omdvbnquk1kt
- Original: https://x.com/_philschmid/status/2120209233019019723

## Summary

Google publishes a practical developer guide for Gemini 4 Carbon covering API changes, decoding of up to 1M tokens, and multi-agent patterns. Schmid says upgrading from Argon requires only changing the model ID to gemini-4-carbon and that he uses medium thinking_level for most tasks. He adds that the new /swarm preview in Antigravity creates a multi-agent team that communicates through a message board.

## Post

We wrote a practical Developer Guide for Gemini 4 Carbon covering API changes, long decode up to 1M tokens, and multi-agent patterns: https://aistudio.google.com/learn/gemini-4-carbon-developer-guide

Upgrading from Argon means just changing the id to gemini-4-carbon. I use medium thinking_level for almost everything. For bigger multi-file tasks, the new /swarm preview in @Antigravity creates a multi-agent team that can communicate via a message board. You can put Carbon on architecture and code review while 3.8 Flash works on parallel edits.