Claude Sonnet 5.5 vs Gemini 3.1 Pro Preview: API cost
Standard, cached and batch API prices for Claude Sonnet 5.5 (Anthropic) and Gemini 3.1 Pro Preview (Google), and what each costs for your usage.
Claude Sonnet 5.5 is cheaper than Gemini 3.1 Pro Preview at standard rates, with the same input price and 17% cheaper output.
- Input $60.00
- Cached input $3.00
- Output $90.00
- Input $60.00
- Cached input $6.00
- Output $108.00
Show as a table
| Output tokens | Claude Sonnet 5.5 | Gemini 3.1 Pro Preview |
|---|---|---|
| 0 | $2.00 | $2.00 |
| 250 | $4.50 | $5.00 |
| 500 | $7.00 | $8.00 |
| 750 | $9.50 | $11.00 |
| 1,000 | $12.00 | $14.00 |
| Token type | Claude Sonnet 5.5 | Gemini 3.1 Pro Preview | |
|---|---|---|---|
| Input | $2 | $2 | Same price |
| Cached input | $0.10 | $0.20 | Claude Sonnet 5.5 is 2× cheaper |
| Output | $10 | $12 | Claude Sonnet 5.5 is 17% cheaper |
| Batch input | $1 | $1 | Same price |
| Batch cached input | $0.05 | $0.20 | Claude Sonnet 5.5 is 4× cheaper |
| Batch output | $5 | $6 | Claude Sonnet 5.5 is 17% cheaper |
Gemini 3.1 Pro Preview: Prompts over 200K tokens are billed at a higher rate.
| Workload | Claude Sonnet 5.5 | Gemini 3.1 Pro Preview |
|---|---|---|
Support chatbot 2,000 in / 300 out tokens,
1,000 requests a day, 50% cached | $153.00 | $174.00 |
Document summaries 10,000 in / 800 out tokens,
200 requests a day | $168.00 | $177.60 |
Tagging / classifying 400 in / 20 out tokens,
20,000 requests a day | $600.00 | $624.00 |
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Or see Claude Sonnet 5.5 pricing, Gemini 3.1 Pro Preview pricing, or compare any two models.
FAQ
Frequently asked questions
Is Claude Sonnet 5.5 cheaper than Gemini 3.1 Pro Preview?
Claude Sonnet 5.5 is cheaper than Gemini 3.1 Pro Preview at standard rates, with the same input price and 17% cheaper output. Based on standard API rates last checked on Oct 13, 2026.
How much do Claude Sonnet 5.5 and Gemini 3.1 Pro Preview cost per million tokens?
Claude Sonnet 5.5: $2 per million input tokens and $10 per million output tokens. Gemini 3.1 Pro Preview: $2 input and $12 output. These are standard rates in USD, before tax, from each provider’s own pricing page.
Which is cheaper with the Batch API?
Claude Sonnet 5.5’s batch rates are $1 input and $5 output per million tokens (50% off); Gemini 3.1 Pro Preview’s batch rates are $1 input and $6 output per million tokens (50% off).
Does prompt caching change the comparison?
Claude Sonnet 5.5 charges $0.10 per million cached input tokens, against $2 for normal input; Gemini 3.1 Pro Preview charges $0.20 per million cached input tokens, against $2 for normal input. Cache write and storage charges are extra and aren’t included here.