Claude Sonnet 4.6 vs Gemini 3.1 Pro
List-price comparison · Claude Sonnet 4.6 details · Gemini 3.1 Pro details
For a typical workload (100,000 requests / mo), Gemini 3.1 Pro costs 25% less — $720.00/mo vs $960.00/mo.
| Claude Sonnet 4.6 | Gemini 3.1 Pro | |
|---|---|---|
| Input / 1M tokens | $3.00 | $2.00 |
| Output / 1M tokens | $15.00 | $12.00 |
| Typical request (1,200 in + 400 out) | $0.0096 | $0.0072 |
| Context window | 1M tokens | 1,048,576 tokens |
| Max output | 128k tokens | 65,536 tokens |
| Tier | Balanced | Flagship |
| Provider | Anthropic |
Projected monthly cost
Rows open both models in the calculator — adjust volume and token counts there.
Claude Sonnet 4.6
Strong price-to-performance for production agents: reliable tool use, structured JSON output, and solid coding ability at roughly a fifth of Opus's cost.
Can still misstep on the hardest multi-step reasoning chains where Opus would succeed — budget for occasional escalation to a flagship model.
Gemini 3.1 Pro
Native audio, video, and document understanding with a ~1M token context window — strong fit for multi-modal RAG and large-document analysis.
Output token cost is steep relative to input, and the largest context windows can be slow to fill — chunk large documents where possible.
More comparisons
Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.