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Claude 3 Opus vs Gemini 3.0 Flash

0 vs 2 benchmarks won

Anthropic
Claude 3 Opus
Google
Gemini 3.0 Flash
Overview
CompanyAnthropicGoogle
Release dateMar 4 2024Dec 17 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Agentic coding
SWE-Bench Pro
49.6%
Coding
SWE-Bench Verified
33%
78%Best
Agentic terminal coding
Terminal-Bench 2.1
58%
Multi-step tool use
MCP Atlas
62%
General tool use
Toolathlon
49.4%
Multidisciplinary reasoning
Humanity's Last Exam · no tools
33.7%
Abstract reasoning
ARC-AGI-2
33.6%
Science
GPQA Diamond
50.4%
90.4%Best
Agentic computer use
OSWorld-Verified
65.1%
Agentic financial analysis
Finance Agent v2
42.6%
Knowledge work
GDPval-AA
1204
Chart reasoning
CharXiv Reasoning
80.3%
Multimodal reasoning
MMMU-Pro
81.2%
Spatial reasoning
Blueprint-Bench 2
0%
Long context
MRCR v2 (8-needle) · 128k average
67.2%
Long context
MRCR v2 (8-needle) · 1M pointwise
22.1%
Timeline
Release gapClaude 3 Opus shipped 653 days before Gemini 3.0 Flash

Which is better: Claude 3 Opus or Gemini 3.0 Flash?

Gemini 3.0 Flash leads Claude 3 Opus on 2 of the 2 benchmarks they both report (SWE-Bench Verified, GPQA Diamond). Claude 3 Opus shipped 653 days before Gemini 3.0 Flash, 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 SWE-Bench Verified, Gemini 3.0 Flash leads at 78% vs Claude 3 Opus at 33%. On GPQA Diamond, Gemini 3.0 Flash leads at 90.4% vs Claude 3 Opus at 50.4%.

Frequently asked questions

When was Claude 3 Opus released?
Claude 3 Opus was released by Anthropic on Mar 4 2024.
When was Gemini 3.0 Flash released?
Gemini 3.0 Flash was released by Google on Dec 17 2025.
Which is better at coding, Claude 3 Opus or Gemini 3.0 Flash?
Gemini 3.0 Flash leads on SWE-Bench Verified — Claude 3 Opus 33% vs Gemini 3.0 Flash 78%.
Which scores higher on GPQA Diamond, Claude 3 Opus or Gemini 3.0 Flash?
Gemini 3.0 Flash leads on GPQA Diamond — Claude 3 Opus 50.4% vs Gemini 3.0 Flash 90.4%.

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