Overview
- Reports say Google is preparing a public release of Gemini 4 under the name Argon, with coverage based on leaked internal documents and employee accounts.
- Leaked materials and staff reports show Google is testing multiple Gemini 4 derivatives called Argon, Barium and Carbon, with Carbon recently added to the company's internal Jetski code-testing platform.
- An anonymous employee told reporters that Carbon's coding performance appears to match Anthropic’s Opus 5.5, but that claim is anecdotal and has not been verified by independent benchmarks or Google.
- Internal feedback described early Argon builds as generally well received but weaker on some programming tasks, roughly comparable in those areas to Anthropic’s earlier Claude Opus 5.
- Google did not comment on the reporting and the company’s internal codenames do not always map to public product names, so independent tests and an official announcement will be needed to confirm what, if any, models reach users.