When was Claude Haiku 4.5 released?

Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.

When was Gemini 3.1 Pro released?

Gemini 3.1 Pro was released by Google on Feb 19 2026.

Which is better on GPQA Diamond, Claude Haiku 4.5 or Gemini 3.1 Pro?

Gemini 3.1 Pro scores higher on GPQA Diamond — Claude Haiku 4.5 73% vs Gemini 3.1 Pro 94.3%.

Which is better at coding, Claude Haiku 4.5 or Gemini 3.1 Pro?

On SWE-Bench Verified (real-world software-engineering tasks), Gemini 3.1 Pro leads — Claude Haiku 4.5 scores 73.3% and Gemini 3.1 Pro scores 80.6%.

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Claude Haiku 4.5 vs Gemini 3.1 Pro

0 vs 2 benchmarks won

	Anthropic Claude Haiku 4.5	Google Gemini 3.1 Pro
Overview
Company	Anthropic	Google
Release date	Oct 15 2025	Feb 19 2026
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	73%	94.3%
Software engineering SWE-Bench Verified	73.3%	80.6%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Claude Haiku 4.5 shipped 127 days before Gemini 3.1 Pro

Which is better: Claude Haiku 4.5 or Gemini 3.1 Pro?

Gemini 3.1 Pro leads Claude Haiku 4.5 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Haiku 4.5 shipped 127 days before Gemini 3.1 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 3.1 Pro scores 94.3%, 21.3 points above Claude Haiku 4.5 at 73%. On SWE-Bench Verified, Gemini 3.1 Pro scores 80.6%, 7.3 points above Claude Haiku 4.5 at 73.3%.

Frequently asked questions

When was Claude Haiku 4.5 released?: Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
When was Gemini 3.1 Pro released?: Gemini 3.1 Pro was released by Google on Feb 19 2026.
Which is better on GPQA Diamond, Claude Haiku 4.5 or Gemini 3.1 Pro?: Gemini 3.1 Pro scores higher on GPQA Diamond — Claude Haiku 4.5 73% vs Gemini 3.1 Pro 94.3%.
Which is better at coding, Claude Haiku 4.5 or Gemini 3.1 Pro?: On SWE-Bench Verified (real-world software-engineering tasks), Gemini 3.1 Pro leads — Claude Haiku 4.5 scores 73.3% and Gemini 3.1 Pro scores 80.6%.