GPT-5.6 Sol Pro
GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode.
text + image + file → text · made by OpenAI
Sold by 10 ways
| Seller | Lane | Rate |
|---|---|---|
| Nous Research 2 ways | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache write | |
| Nous Research aggregator | batch | $1per Mtok in$5per Mtok out$0.1per Mtok cached$1.25per Mtok cache writeinference-api.nousresearch.com · read 2026-09-12 |
| Nous Research aggregator | standard | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache writeinference-api.nousresearch.com · read 2026-09-12 |
| OpenRouter 6 ways | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache write | |
| OpenRouter aggregator | batch | $1per Mtok in$5per Mtok out$0.1per Mtok cached$1.25per Mtok cache writeopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | openai/flex | $1per Mtok in$5per Mtok out$0.1per Mtok cached$1.25per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | standard | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache writeopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | openai/fast | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-08-31 |
| OpenRouter aggregatornot on the seller's list today | openai/priority | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | azure | $5per Mtok in$30per Mtok out$0.5per Mtok cached$6.25per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | azure/eu | $5.5per Mtok in$33per Mtok out$0.55per Mtok cached$6.88per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| Venice AI aggregator | standard | $2.5per Mtok in$12.5per Mtok out$0.25per Mtok cached$3.12per Mtok cache writemodels.dev · read 2026-09-16 |
About
GPT-5.6 Sol Pro — a text model from OpenAI, sold by 3 companies from $2 in and $10 out per million tokens.
It takes text, images and files and returns text, with a context window of 1,050,000 tokens. It was published in July 2026, trained on material up to February 2026. Its sellers say it can reason step by step and call a tool. The catalogue files it under chat. Three companies sell it. The cheapest is $2 in and $10 out per million tokens at Nous Research. Beside the standard rate there are batch, separately routed, regional, faster and flex lanes.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 1,050,000 tokens
- Longest answer
- 128,000 tokens
- Published
- July 2026
- Knowledge to
- February 2026
- Licence
- not read
- Sellers
- 3
- Maker's own price
- not read
- Price
- $2 in and $10 out per million tokens — Nous Research
Known as 3 names
openai/gpt-5.6-sol-proopenai/gpt-5.6-sol-pro:batchOpenAI: GPT-5.6 Sol Pro (batch)