When was Claude Sonnet 4.5 released?

Claude Sonnet 4.5 was released by Anthropic on Sep 29 2025.

When was Gemini 3.0 Pro released?

Gemini 3.0 Pro was released by Google on Nov 18 2025.

Which is better on GPQA Diamond, Claude Sonnet 4.5 or Gemini 3.0 Pro?

Gemini 3.0 Pro scores higher on GPQA Diamond — Claude Sonnet 4.5 83.4% vs Gemini 3.0 Pro 91.9%.

Which is better at coding, Claude Sonnet 4.5 or Gemini 3.0 Pro?

On SWE-Bench Verified (real-world software-engineering tasks), Claude Sonnet 4.5 leads — Claude Sonnet 4.5 scores 77.2% and Gemini 3.0 Pro scores 76.2%.

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Claude Sonnet 4.5 vs Gemini 3.0 Pro

1 vs 2 benchmarks won

	Anthropic Claude Sonnet 4.5	Google Gemini 3.0 Pro
Overview
Company	Anthropic	Google
Release date	Sep 29 2025	Nov 18 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	83.4%	91.9%
Software engineering SWE-Bench Verified	77.2%	76.2%
Multimodal understanding MMMU	68%	81%
Timeline
Release gap	Claude Sonnet 4.5 shipped 50 days before Gemini 3.0 Pro

Which is better: Claude Sonnet 4.5 or Gemini 3.0 Pro?

Gemini 3.0 Pro leads Claude Sonnet 4.5 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Sonnet 4.5 shipped 50 days before Gemini 3.0 Pro, 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 Pro scores 91.9%, 8.5 points above Claude Sonnet 4.5 at 83.4%. On SWE-Bench Verified, Claude Sonnet 4.5 scores 77.2%, 1 points above Gemini 3.0 Pro at 76.2%. On MMMU, Gemini 3.0 Pro scores 81%, 13 points above Claude Sonnet 4.5 at 68%.

Frequently asked questions

When was Claude Sonnet 4.5 released?: Claude Sonnet 4.5 was released by Anthropic on Sep 29 2025.
When was Gemini 3.0 Pro released?: Gemini 3.0 Pro was released by Google on Nov 18 2025.
Which is better on GPQA Diamond, Claude Sonnet 4.5 or Gemini 3.0 Pro?: Gemini 3.0 Pro scores higher on GPQA Diamond — Claude Sonnet 4.5 83.4% vs Gemini 3.0 Pro 91.9%.
Which is better at coding, Claude Sonnet 4.5 or Gemini 3.0 Pro?: On SWE-Bench Verified (real-world software-engineering tasks), Claude Sonnet 4.5 leads — Claude Sonnet 4.5 scores 77.2% and Gemini 3.0 Pro scores 76.2%.