Claude Sonnet 4.6 vs Gemini 3.1 Pro
Claude Sonnet 4.6 (Anthropic) and Gemini 3.1 Pro (Google DeepMind) compared on benchmarks, pricing, context window, and use-case rankings.
- Gemini 3.1 Pro leads on overall intelligence (ECI 155 vs 153).
- Gemini 3.1 Pro ranks higher for coding (65th vs 64th percentile).
| Attribute | Claude Sonnet 4.6 | Gemini 3.1 Pro |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 153 | 155 |
| Coding | 64 | 65 |
| Math | 47 | 74 |
| Reasoning & Knowledge | 59 | 94 |
| Agentic & Tools | 48 | 83 |
| Specifications | ||
| Developer | Anthropic | Google DeepMind |
| Family | Claude | Gemini |
| Released | Feb 17, 2026 | Feb 19, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1M | — |
| Price — $/M input | $3.00 | — |
| Price — $/M output | $15.00 | — |
| Inputs | text, image, file | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 86% | 96% |
| APEX | 24% | 34% |
| ARC-AGI | 87% | 98% |
| ARC-AGI-2 | 60% | 77% |
| FrontierMath | 32% | 37% |
| FrontierMath Tier 4 | 8% | 17% |
| GPQA Diamond | 87% | 94% |
| Humanity's Last Exam | 30% | 46% |
| SciCode | 47% | — |
| SimpleQA Verified | 29% | 77% |
| SWE-bench Verified | 75% | 76% |
| Terminal-Bench | 53% | 80% |
| WebDev Arena | 1523 | 1461 |
| WeirdML | 66% | 72% |
| τ²-bench | 76% | — |
| GSO (code optimization) | — | 23% |
| METR task horizon | — | 6.4 h |
| SimpleBench | — | 80% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Claude Sonnet 4.6 better than Gemini 3.1 Pro?
On Epoch AI's Capabilities Index, Gemini 3.1 Pro scores higher (155) than Claude Sonnet 4.6 (153). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is better for coding, Claude Sonnet 4.6 or Gemini 3.1 Pro?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Gemini 3.1 Pro ranks higher — 65th vs 64th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.