OpenAI · API model
GPT-5.6 Sol
API id gpt-5.6-sol prices checked
- Context
- 1.05Mtokens
- Max output
- 128Ktokens
- Knowledge cutoff
- Feb 2026
- Typical request
- $0.014
Pricing
US dollars per 1 million tokens. A typical request (1,000 input + 500 output tokens) costs $0.014 at standard rates.
| Rate | Input | Cached input | Output |
|---|---|---|---|
| Standard | $4.00 | $0.40 | $20.00 |
| Long promptsPrompts over 272K tokens | $8.00 | $0.80 | $30.00 |
| BatchAsynchronous, results within 24 hours | $2.00 | — | $10.00 |
| FlexLower price, slower responses | $2.00 | — | $10.00 |
| PriorityFast mode (formerly Priority), up to 2.5× faster | $8.00 | — | $40.00 |
Sources list different standard prices. LiteLLM and OpenAI's API pricing docs list $4 / $20 (the docs say promotional pricing runs at least through Nov 21, 2026). OpenRouter lists $2 / $10, the same as OpenAI's Batch and Flex rates. The openai.com pricing page shows $5 / $30. We use $4 / $20 until the sources agree.
| Source | Input | Output | Note |
|---|---|---|---|
| independentLiteLLM price catalog | $4.00 | $20.00 | Used on this page |
| vendorOpenAI API pricing docs | $4.00 | $20.00 | Standard tier, promotional |
| independentOpenRouter | $2.00 | $10.00 | |
| vendoropenai.com pricing page | $5.00 | $30.00 |
Capabilities and limits
| Context window | 1.05M tokens |
|---|---|
| Max output | 128K tokens |
| Input | TextImagesFiles (PDF) |
| Output | Text |
| Reasoning | Adjustable effort |
| Tool use | Yes |
| Structured output (JSON) | Yes |
| Knowledge cutoff | Feb 16, 2026 |
Benchmarks and speed
Not collected yet. Scores will come only from independent leaderboards, each shown with its source and test date.
Planned: GPQA Diamond, SWE-bench Verified, AIME 2025, LMArena Elo, output speed and time to first token.
Where these numbers come from
Every value is an observation with a source and a date. independent is a third-party catalog, vendor is the model maker's own page, derived is our calculation.
| Field | Value | Source | Observed |
|---|---|---|---|
| Standard price, input / output | $4.00 / $20.00 | independentLiteLLM | Sep 13, 2026 |
| Standard price, input / output | $4.00 / $20.00 | vendorOpenAI API docs | Sep 13, 2026 |
| Standard price, input / output | $2.00 / $10.00 | independentOpenRouter | Sep 13, 2026 |
| Cached input | $0.40 | vendorOpenAI API docs | Sep 13, 2026 |
| Prompts over 272K tokens | $8.00 / $30.00 | independentLiteLLM | Sep 13, 2026 |
| Batch, Flex, Fast mode | $2/$10, $2/$10, $8/$40 | vendorOpenAI API docs | Sep 13, 2026 |
| Context window | 1,050,000 | independentOpenRouter | Sep 13, 2026 |
| Max output | 128,000 | independentOpenRouter | Sep 13, 2026 |
| Knowledge cutoff | 2026-02-16 | vendorOpenRouter | Sep 13, 2026 |
| Release date | 2026-07-09 | independentOpenRouter | Sep 13, 2026 |
| Input types, reasoning, tools, JSON | text, image, file; effort; yes; yes | independentOpenRouter | Sep 13, 2026 |
| Typical request | $0.014 | derivedCalculated: 1,000 in + 500 out | Sep 13, 2026 |