Google's Gemini 4 "Carbon" model is reportedly matching Anthropic's Opus 5.5 coding performance
Gemini 4 Carbon is reportedly matching Anthropic's best coding model — but Google hasn't shipped it yet.
Why it matters
Unconfirmed employee comparison suggests Google's next Gemini iteration closes the coding capability gap with Claude Opus 5.5, though the claim rests on a single insider account and lacks independent benchmarking.
The key facts
11 to knowGemini 4 Argon not yet widely available
Gemini 4 Carbon (codenamed) allegedly matches Anthropic Opus 5.5 coding performance per one Business Insider-sourced employee comparison
New modes appearing in Gemini app and AI Studio
No public benchmarks or evaluation data provided
Broader Gemini 4 launch timing not specified
Gemini 4 Carbon codename mentioned by Business Insider citing one Google employee comparison
Claimed parity with Anthropic Opus 5.5 on coding tasks
Gemini 4 Argon (prior version) still not widely available
New modes appearing in Gemini app and AI Studio suggest broader launch preparation
No official benchmark data, capability matrix, or release timeline disclosed
Source is employee quote, not Google announcement or independent eval
The story so far
Earlier coverage of this storyline
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: Gemini 4 Argon isn't even widely available yet, and rumors about a more powerful version codenamed Carbon are already making the rounds. According to Business Insider, one employee compared Carbon's coding abilities to Anthropic's Opus 5.5. Meanwhile, new modes are showing up in the Gemini app and…