token.app › Compare › Gemini 3.1 Pro Preview vs Claude Opus 5

Gemini 3.1 Pro Preview vs Claude Opus 5

Claude Opus 5 leads on 3 of 5 shared benchmarks. Gemini 3.1 Pro Preview is 2.2× cheaper per token on a blended 3:1 basis. Gemini 3.1 Pro Preview accepts the larger context window (1.0M).

Head to head
Blended price uses a 3:1 input:output mix
Gemini 3.1 Pro PreviewClaude Opus 5
ProviderGoogleAnthropic
Input $/1M$2.00$5.00
Output $/1M$12.00$25.00
Blended $/1M$4.50$10.00
Context window1.0M1M
Max output66K128K
ReleasedFeb 2026Jul 2026
LicenceProprietaryProprietary
GPQA Diamond 94.4% 93.9%
FrontierMath T1–3 59.6% 85.6%
FrontierMath T4 26.8% 73.2%
SimpleQA Verified 77.3% 56.7%
OTIS Mock AIME 95.6% 98.9%
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose Gemini 3.1 Pro Preview if…
  • Costs less per token — $4.50 vs $10.00 blended
  • Higher GPQA Diamond (94.4% vs 93.9%)
  • Higher SimpleQA Verified (77.3% vs 56.7%)
  • Larger context window (1.0M)
Choose Claude Opus 5 if…
  • Higher FrontierMath T1–3 (85.6% vs 59.6%)
  • Higher FrontierMath T4 (73.2% vs 26.8%)
  • Higher OTIS Mock AIME (98.9% vs 95.6%)
  • Newer model (released Jul 2026)
FAQ
Which is better, Gemini 3.1 Pro Preview or Claude Opus 5?
Across the 5 benchmarks both models have independently-run scores for, Gemini 3.1 Pro Preview leads on 2 and Claude Opus 5 leads on 3. Benchmarks are one input — price and context window are on this page too.
Is Gemini 3.1 Pro Preview cheaper than Claude Opus 5?
Gemini 3.1 Pro Preview is cheaper: $4.50 versus $10.00 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $5.00. Output alone: $12.00 vs $25.00.
What context windows do Gemini 3.1 Pro Preview and Claude Opus 5 have?
Gemini 3.1 Pro Preview: 1,048,576 tokens. Claude Opus 5: 1,000,000 tokens.
Who makes Gemini 3.1 Pro Preview and Claude Opus 5?
Gemini 3.1 Pro Preview is made by Google. Claude Opus 5 is made by Anthropic.
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