GPT-6.1 Sol API Pricing
GPT-6.1 Sol by OpenAI costs $2.00 per million input tokens and $10.00 per million output tokens.
Price verified from OpenAI's pricing page.
Rates and limits
- Input / 1M
- $2.00
- Output / 1M
- $10.00
- Cached input / 1M
- $0.10
- Cache write / 1M
- $2.50
- Batch discount
- 50% off
- Context window
- 1.05M tokens
- Max output
- 128K tokens
- Knowledge cutoff
- April 2026
- Released
- September 2026
Pricing note: Prompts over 272K input tokens are billed at $4 in / $0.20 cached / $5 cache write / $15 out for the whole request. Fast mode is 2x standard; Flex matches Batch (50% off).
What GPT-6.1 Sol costs per month
Token volume split 3:1 between input and output, with no prompt caching.
| Tokens per month | Input / output | Standard | Batch API |
|---|---|---|---|
| 1M | 750K / 250K | $4.00 | $2.00 |
| 10M | 7.5M / 2.5M | $40.00 | $20.00 |
| 100M | 75M / 25M | $400.00 | $200.00 |
Where to run GPT-6.1 Sol
Prices above are OpenAI's direct rates. Cloud platforms can charge differently; the cloud platform view compares them.
- OpenAI APIDirect API
- OpenRouterCloud / platform
GPT-6.1 Sol pricing FAQ
How much does GPT-6.1 Sol cost per million tokens?
GPT-6.1 Sol costs $2.00 per million input tokens and $10.00 per million output tokens, as listed on OpenAI's pricing page on September 30, 2026.
How much does GPT-6.1 Sol cost for 10 million tokens a month?
About $40.00 a month, assuming 7.5 million input and 2.5 million output tokens with no prompt caching, or $20.00 through the batch API.
What is the context window of GPT-6.1 Sol?
GPT-6.1 Sol accepts up to 1,050,000 tokens of context and returns up to 128,000 output tokens per request.
Does GPT-6.1 Sol support prompt caching?
Yes. Cached input tokens cost $0.10 per million, 95% less than the standard input rate. Writing a prefix to the cache costs $2.50 per million tokens.
Is there a batch discount for GPT-6.1 Sol?
Yes. Requests sent through the batch API cost 50% less: $1.00 per million input tokens and $5.00 per million output tokens.
Where can I use the GPT-6.1 Sol API?
GPT-6.1 Sol is available through OpenAI API and OpenRouter.
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Prices shown as input / output per million tokens. All model prices · Side-by-side comparison