Claude Opus 4.7 vs Gemini 3.1 Pro PreviewBenchmark Comparison 2026

Objective comparison based on public benchmarks updated weekly: Intelligence Index, GPQA Diamond, Chatbot Arena ELO, pricing and speed.

Overall winner (2026)

Gemini 3.1 Pro Preview

6 of 7 criteria won

Anthropic

Claude Opus 4.7

Intelligence Index

57.3

Coding Index

53.1

1 criterion won

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Google

Gemini 3.1 Pro Preview

Winner

Intelligence Index

57.2

Coding Index

55.5

6 criteria won

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Detailed Comparison

CritérioClaude Opus 4.7Gemini 3.1 Pro Preview
Chatbot Arena ELO
Intelligence Index (AA)57.357.2
Coding Index (AA)53.155.5
GPQA Diamond91.0%94.0%
Input price ($/1M tok)$6.25$2.00
Output price ($/1M tok)$25.00$12.00
Context window1.0M tokens1.0M tokens
Speed (tokens/s)49 tok/s136 tok/s

✓ = winner in this criterion • Source: Artificial Analysis, LMArena, official APIs • Updated weekly

Technical Specifications

Claude Opus 4.7

Company
Anthropic
Context window
1.0M tokens
Input ($/1M tok)
$6.25
Output ($/1M tok)
$25.00
Speed
49 tok/s
Release
Apr 2026
Multimodal
Yes
Open Source
No
Official website
Visit

Gemini 3.1 Pro Preview

Company
Google
Context window
1.0M tokens
Input ($/1M tok)
$2.00
Output ($/1M tok)
$12.00
Speed
136 tok/s
Release
Feb 2026
Multimodal
Yes
Open Source
No
Official website
Visit

When to use Claude Opus 4.7 vs Gemini 3.1 Pro Preview?

Choosing between Claude Opus 4.7 and Gemini 3.1 Pro Preview depends on your use case, budget and technical requirements. Below, a practical guide based on benchmark data and each model's specifications.

Use Claude Opus 4.7 when:

Anthropic · Multimodal

  • Complex reasoning, math and advanced programming — reasoning models are optimized for problems requiring multiple logical steps
  • Processing images, PDFs and visual documents alongside text — useful for analyzing contracts, reports with charts and mixed content
  • Long document analysis — 1.0M tokens context window allows processing books, legal databases and extensive logs
  • AI agents with tool calling — workflow automation, external API integration and data pipelines
  • API integration in SaaS applications — direct API access with documented SLA
View full Claude Opus 4.7 profile

Use Gemini 3.1 Pro Preview when:

Google · Multimodal

  • Complex reasoning, math and advanced programming — reasoning models are optimized for problems requiring multiple logical steps
  • Processing images, PDFs and visual documents alongside text — useful for analyzing contracts, reports with charts and mixed content
  • Applications with audio input or output — transcription, call analysis and voice assistants
  • Long document analysis — 1.0M tokens context window allows processing books, legal databases and extensive logs
  • AI agents with tool calling — workflow automation, external API integration and data pipelines
  • API integration in SaaS applications — direct API access with documented SLA
View full Gemini 3.1 Pro Preview profile
SWEN Verdict: Gemini 3.1 Pro Preview wins in more objective criteria in this comparison (6 vs 1). For most use cases, Gemini 3.1 Pro Preview offers better aggregate performance — but Claude Opus 4.7 may be preferable if your project prioritizes complex reasoning, math and advanced programming.

Frequently Asked Questions

Claude Opus 4.7 or Gemini 3.1 Pro Preview: which is better?

Gemini 3.1 Pro Preview wins in 6 of 7 criteria analyzed. Check the full table to choose based on your use case.

Where does this benchmark data come from?

Data is aggregated from Artificial Analysis (Intelligence Index, Coding Index) and Chatbot Arena/LMArena (ELO). Pricing and specs come from official APIs. Updated weekly.

What is the Intelligence Index?

The Intelligence Index is an aggregate score from Artificial Analysis that combines multiple academic benchmarks (MMLU, GPQA, LiveBench, etc.) into a single rating. The higher the score, the more capable the model is at reasoning tasks.

Is Claude Opus 4.7 cheaper than Gemini 3.1 Pro Preview?

No. Gemini 3.1 Pro Preview is cheaper: $2/1M input tokens vs $6.25/1M tokens for Claude Opus 4.7 — a 213% difference. For high-volume projects, Gemini 3.1 Pro Preview can reduce costs substantially.

Claude Opus 4.7 or Gemini 3.1 Pro Preview: which has a larger context window?

Gemini 3.1 Pro Preview has the larger context window: 1.0M tokens vs 1.0M tokens. For long document analysis, extensive transcripts or full codebases, the larger context window is a decisive criterion.

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