AnyModelGPT-5.6 Sol vs GPT-6 Sol
OpenAI's GPT-5.6 Sol against OpenAI's GPT-6 Sol — price, context and what each is best at. Both are available through one OpenAI-compatible API.
| AnyModel — you pay | GPT-5.6 Sol | GPT-6 Sol |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Input / 1M | $0.13 | $0.1 |
| Output / 1M | $0.13 | $0.1 |
| Context | 1M | 1M |
| Best for | Codex CLI | Codex CLI |
GPT-5.6 Sol
Latest frontier agentic coding model — the new Codex default.
GPT-5.6 Sol is OpenAI's newest frontier model for agentic coding: the default engine of modern Codex, tuned for long autonomous sessions, repo-scale edits and reliable tool calling. Pick it when you want the strongest coder in the GPT line.
More about GPT-5.6 Sol →GPT-6 Sol
OpenAI's GPT-6 workhorse for coding and everyday work.
GPT-6 Sol is the everyday tier of the GPT-6 line, trained with the same methods as Astra: OpenAI's workhorse for agentic coding and day-to-day engineering, with long autonomous sessions, repo-scale edits, reliable tool calling and reasoning effort up to max, at a fifth of Astra's vendor price. The default pick for most Codex work; reach for Astra when the task is unusually hard.
More about GPT-6 Sol →FAQ
GPT-6 Sol is cheaper on output tokens ($0.1 vs $0.13 per 1M).
GPT-5.6 Sol: 1M; GPT-6 Sol: 1M.