Claude Opus 4.6 vs Gemini 3.5 Flash
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
42evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.6 Anthropic | 67.0% | 71.0% | 1223elo | 77.7 | 40.7% | 89.6% | 39.9% | 53.1% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 78.5% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 51.9% | 76.0% | 46.2% | 57.6% | 92.1% | 99.79 | 56.1% | 1.5 | 2.08 | 1804elo | - | 84.9% | 88771 | 58 | 93 | 44.5 | 72.0% | 75.6% | 80.6 | - | - | 68.2% |
| Gemini 3.5 Flash Google (Alphabet Inc.) | 64.7% | 26.0% | 1087elo | 71.8 | 39.0% | 92.2% | 42.7% | 76.3% | 78.9% | 78.2% | 64.9% | 75.6% | 84.6% | 88.2% | 82.0% | 76.3% | 55.8% | 76.6% | 68.1% | 31.0% | 49.9% | 53.1% | 74.4% | 40.9% | 48.7% | 95.3% | - | - | - | - | - | 57.9% | - | - | - | - | - | - | - | - | 53.1% | 62.9% | 64.3% |
2 / 2 models
| Attribute | Claude Opus 4.6 Anthropic | Gemini 3.5 Flash Google (Alphabet Inc.) |
|---|---|---|
| Description | Claude Opus 4.6 is an AI model from Anthropic. | Gemini 3.5 Flash is an AI model from Google (Alphabet Inc.). |
| Family | Claude | Gemini |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 5 Feb 2026 | 19 May 2026 |
| Context | 1,000,000 | 1,048,576 |
| Input $/1M | $5.00 | $1.50 |
| Output $/1M | $25.00 | $9.00 |
| Cache read $/1M | $0.500 | $0.150 |
| Cache write $/1M | $6.250 | $0.083 |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image, video, file, audio |
| Providers | - | - |
| Publisher | Anthropic | Google (Alphabet Inc.) |
| Reported scores | GPQA Diamond89.6% (AA) Humanity's Last Exam (HLE)39.9% (AA) SciCode51.9% (AA) τ²-bench (Tau²-bench)92.1% (AA) Terminal-Bench (Hard)46.2% (AA) | Humanity's Last Exam (HLE)42.7% (AA) τ²-bench (Tau²-bench)95.3% (AA) Terminal-Bench (Hard)40.9% (AA) Vals Index53.1% |
FAQ
- Is Claude Opus 4.6 or Gemini 3.5 Flash better?
- Across the 26 benchmarks both models report on Sophon, Claude Opus 4.6 leads on 16 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.6 and Gemini 3.5 Flash compare on GPQA Diamond?
- Claude Opus 4.6 scores 89.6% and Gemini 3.5 Flash scores 92.2% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.6 or Gemini 3.5 Flash?
- Gemini 3.5 Flash is cheaper at $9.00 per million output tokens against $25.00 for Claude Opus 4.6 - about 2.8x.
- When were Claude Opus 4.6 and Gemini 3.5 Flash released?
- Claude Opus 4.6 was released 5 Feb 2026 by Anthropic. Gemini 3.5 Flash was released 19 May 2026 by Google (Alphabet Inc.).
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