GPT-6.1 Sol vs Claude Sonnet 5.5: API cost
Standard, cached and batch API prices for GPT-6.1 Sol (OpenAI) and Claude Sonnet 5.5 (Anthropic), and what each costs for your usage.
GPT-6.1 Sol and Claude Sonnet 5.5 have the same standard input and output prices.
- Input $60.00
- Cached input $3.00
- Output $90.00
- Input $60.00
- Cached input $3.00
- Output $90.00
| Token type | GPT-6.1 Sol | Claude Sonnet 5.5 | |
|---|---|---|---|
| Input | $2 | $2 | Same price |
| Cached input | $0.10 | $0.10 | Same price |
| Output | $10 | $10 | Same price |
| Batch input | $1 | $1 | Same price |
| Batch cached input | $0.05 | $0.05 | Same price |
| Batch output | $5 | $5 | Same price |
GPT-6.1 Sol: Long prompts are billed at higher long-context rates.
| Workload | GPT-6.1 Sol | Claude Sonnet 5.5 |
|---|---|---|
Support chatbot 2,000 in / 300 out tokens,
1,000 requests a day, 50% cached | $153.00 | $153.00 |
Document summaries 10,000 in / 800 out tokens,
200 requests a day | $168.00 | $168.00 |
Tagging / classifying 400 in / 20 out tokens,
20,000 requests a day | $600.00 | $600.00 |
More comparisons
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- GPT-6.1 Sol vs Gemini 3.8 Flash
- GPT-6.1 Sol vs Gemini 3.5 Flash
- GPT-6.1 Sol vs Gemini 3.1 Pro Preview
- GPT-6.1 Sol vs Gemini 3 Flash Preview
Or see GPT-6.1 Sol pricing, Claude Sonnet 5.5 pricing, or compare any two models.
FAQ
Frequently asked questions
Is GPT-6.1 Sol cheaper than Claude Sonnet 5.5?
GPT-6.1 Sol and Claude Sonnet 5.5 have the same standard input and output prices. Based on standard API rates last checked on Oct 13, 2026.
How much do GPT-6.1 Sol and Claude Sonnet 5.5 cost per million tokens?
GPT-6.1 Sol: $2 per million input tokens and $10 per million output tokens. Claude Sonnet 5.5: $2 input and $10 output. These are standard rates in USD, before tax, from each provider’s own pricing page.
Which is cheaper with the Batch API?
GPT-6.1 Sol’s batch rates are $1 input and $5 output per million tokens (50% off); Claude Sonnet 5.5’s batch rates are $1 input and $5 output per million tokens (50% off).
Does prompt caching change the comparison?
GPT-6.1 Sol charges $0.10 per million cached input tokens, against $2 for normal input; Claude Sonnet 5.5 charges $0.10 per million cached input tokens, against $2 for normal input. Cache write and storage charges are extra and aren’t included here.