When was Claude Sonnet 4.6 released?

Claude Sonnet 4.6 was released by Anthropic on Feb 17 2026.

When was Gemini 3.0 Flash released?

Gemini 3.0 Flash was released by Google on Dec 17 2025.

Which is better on GPQA Diamond, Claude Sonnet 4.6 or Gemini 3.0 Flash?

Gemini 3.0 Flash scores higher on GPQA Diamond — Claude Sonnet 4.6 89.9% vs Gemini 3.0 Flash 90.4%.

Which is better at coding, Claude Sonnet 4.6 or Gemini 3.0 Flash?

On SWE-Bench Verified (real-world software-engineering tasks), Claude Sonnet 4.6 leads — Claude Sonnet 4.6 scores 79.6% and Gemini 3.0 Flash scores 78%.

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Claude Sonnet 4.6 vs Gemini 3.0 Flash

1 vs 1 benchmarks won

	Anthropic Claude Sonnet 4.6	Google Gemini 3.0 Flash
Overview
Company	Anthropic	Google
Release date	Feb 17 2026	Dec 17 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	89.9%	90.4%
Software engineering SWE-Bench Verified	79.6%	78%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Gemini 3.0 Flash shipped 62 days before Claude Sonnet 4.6

Which is better: Claude Sonnet 4.6 or Gemini 3.0 Flash?

Claude Sonnet 4.6 and Gemini 3.0 Flash are evenly matched across the benchmarks they both publish. Gemini 3.0 Flash shipped 62 days before Claude Sonnet 4.6, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

On GPQA Diamond, Gemini 3.0 Flash scores 90.4%, 0.5 points above Claude Sonnet 4.6 at 89.9%. On SWE-Bench Verified, Claude Sonnet 4.6 scores 79.6%, 1.6 points above Gemini 3.0 Flash at 78%.

Frequently asked questions

When was Claude Sonnet 4.6 released?: Claude Sonnet 4.6 was released by Anthropic on Feb 17 2026.
When was Gemini 3.0 Flash released?: Gemini 3.0 Flash was released by Google on Dec 17 2025.
Which is better on GPQA Diamond, Claude Sonnet 4.6 or Gemini 3.0 Flash?: Gemini 3.0 Flash scores higher on GPQA Diamond — Claude Sonnet 4.6 89.9% vs Gemini 3.0 Flash 90.4%.
Which is better at coding, Claude Sonnet 4.6 or Gemini 3.0 Flash?: On SWE-Bench Verified (real-world software-engineering tasks), Claude Sonnet 4.6 leads — Claude Sonnet 4.6 scores 79.6% and Gemini 3.0 Flash scores 78%.