Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Gemini 3.1 Pro Preview | Claude Sonnet 5 (Adaptive Reasoning, Max Effort) |
|---|---|---|
| Input ($/M tokens) | $2 | $2 |
| Output ($/M tokens) | $12 | $10 |
Data from Artificial Analysis API — 12 benchmarks
Claude Sonnet 5 (Adaptive Reasoning, Max Effort) is cheaper overall. Its blended price (3:1 input/output ratio) is $4.00/M tokens vs $4.50/M for Gemini 3.1 Pro Preview.
Gemini 3.1 Pro Preview wins 5 out of 12 benchmarks compared to 2 for Claude Sonnet 5 (Adaptive Reasoning, Max Effort). See the detailed benchmark chart above for per-category results.
Gemini 3.1 Pro Preview generates tokens faster at 129 tok/s vs 87 tok/s. Gemini 3.1 Pro Preview also has lower time-to-first-token (25.94s vs 134.45s).
Choose based on your priorities: Claude Sonnet 5 (Adaptive Reasoning, Max Effort) for lower cost, Gemini 3.1 Pro Preview for stronger benchmark performance, and Gemini 3.1 Pro Preview for faster generation. For latency-sensitive apps, check the TTFT comparison above.