How much does GPT-6 Sol cost on the API?
$2 per 1M input tokens, $0.20 per 1M cached input tokens and $10 per 1M output tokens at OpenAI's short-context rates.
OpenAI · GPT-6 · Rolling out
GPT-6 Sol
GPT-6 Sol is OpenAI's GPT-6 model for complex coding and agentic workflows, rolling out from September 22, 2026 to Codex and ChatGPT Work on Plus, Pro, Business, Enterprise and Edu. It is the Codex default and costs $2 / $10 per 1M input/output tokens on the API, with a 1.05M-token context window.
· today
API price per 1M tokens
$2 in / $10 out
Context window
1.05M tokens
GPT-6 Sol specs
| Released | Sep 22, 2026 |
|---|---|
| Status | Rolling out |
| API model ID | gpt-6-sol |
| API price (in / out) | $2 / $10 per 1M tokens |
| Cache read | $0.20 per 1M tokens |
| Context window | 1.05M tokens |
| Plans | Plus, Pro, Business, Enterprise, Edu |
| Platforms | OpenAI API |
Where you can use GPT-6 Sol
Codex
The Codex default, starting on the Sol Light preset. Pick it with `/model` or `codex --model gpt-6-sol`.
ChatGPT
In ChatGPT Work on the web and in the desktop app.
- API prices shown are OpenAI's short-context rates; long-context requests are billed higher.
GPT-6 Sol compared
GPT-6 Sol FAQ
Is GPT-6 Sol the default in Codex?
Yes. OpenAI's changelog says Sol is the Codex default, and the models page says Sol Light is the starting preset. Switch with `/model` or `codex --model gpt-6-sol`.
Which ChatGPT plans get GPT-6 Sol?
Plus, Pro, Business, Enterprise and Edu, in Codex and ChatGPT Work, per OpenAI's September 22, 2026 changelog entry.
What is the GPT-6 Sol context window?
1.05M tokens, according to OpenAI's API models page.
Other OpenAI models
Sources
- OpenAI: ChatGPT Work and Codex changelogread 2026-09-24
- OpenAI: ChatGPT and Codex modelsread 2026-09-24
- OpenAI API modelsread 2026-09-24
- OpenAI API pricingread 2026-09-24