Claude Opus 5.5 vs Gemini 3.7 Flash
Claude Opus 5.5 (Anthropic) and Gemini 3.7 Flash (Google DeepMind) compared on benchmarks, pricing, context window, and use-case rankings.
- Gemini 3.7 Flash is cheaper on input tokens — $0.75 vs $4.00 per 1M.
- Gemini 3.7 Flash has a larger context window (1M vs 1M tokens).
- Claude Opus 5.5 ranks higher for coding (100th vs 91th percentile).
| Attribute | Claude Opus 5.5 | Gemini 3.7 Flash |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 157 |
| Coding | 100 | 91 |
| Math | — | 80 |
| Reasoning & Knowledge | 100 | 85 |
| Agentic & Tools | — | 98 |
| Specifications | ||
| Developer | Anthropic | Google DeepMind |
| Family | Claude | Gemini |
| Released | Sep 22, 2026 | Aug 13, 2026 |
| Parameters | — | — |
| Availability | — | API access |
| Context window | 1M | 1M |
| Price — $/M input | $4.00 | $0.75 |
| Price — $/M output | $20.00 | $3.75 |
| Inputs | text, image, file | text, image, video, file, audio |
| Outputs | text | text |
| Benchmarks | ||
| Humanity's Last Exam | 61% | 39% |
| SciCode | 67% | 60% |
| AIME 2024/2025 | — | 97% |
| APEX | — | 68% |
| ARC-AGI | — | 96% |
| ARC-AGI-2 | — | 85% |
| GPQA Diamond | — | 95% |
| SimpleQA Verified | — | 69% |
| WebDev Arena | — | 1587 |
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
Which is cheaper, Claude Opus 5.5 or Gemini 3.7 Flash?
Gemini 3.7 Flash is cheaper on input tokens at $0.75 per million, versus $4.00 (representative OpenRouter pricing).
Which has a larger context window, Claude Opus 5.5 or Gemini 3.7 Flash?
Gemini 3.7 Flash supports up to 1M tokens, compared with 1M for the other.
Which is better for coding, Claude Opus 5.5 or Gemini 3.7 Flash?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Claude Opus 5.5 ranks higher — 100th vs 91th 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.