OpenAI API
GPT-6.1 Sol API Pricing 2026 — Cost per 1 Million Tokens
Current GPT-6.1 Sol API pricing from OpenAI per 1 million tokens, including input, output and cached-token rates when available.
| Model | Rate | Price / 1M tokens |
|---|---|---|
| GPT-6.1 Sol OpenAI reasoning model with near-Astra performance for complex coding, computer use and professional work at a lower cost. 1.05M context · 128K max output · text/image input · reasoning low/medium/high/xhigh/max. Standard pricing. Requests with more than 272K input tokens are billed at 2x input/cache rates and 1.5x output for the full request. Batch and Flex are 50% lower than Standard; Fast mode is 2x. | Input — Standard, ≤272K input | $2 |
| GPT-6.1 Sol | Cached input — Standard, ≤272K | $0.1 |
| GPT-6.1 Sol | Cache write — Standard, ≤272K | $2.5 |
| GPT-6.1 Sol | Output — Standard, ≤272K input | $10 |
| GPT-6.1 Sol | Input — Standard, >272K input | $4 |
| GPT-6.1 Sol | Cached input — Standard, >272K | $0.2 |
| GPT-6.1 Sol | Cache write — Standard, >272K | $5 |
| GPT-6.1 Sol | Output — Standard, >272K input | $15 |
How API token cost is calculated
Multiply the number of tokens by the provider rate, then divide by 1,000,000.
cost = tokens × price per 1M ÷ 1,000,000
Example: 250,000 input tokens at $2 / 1M = $0.50.