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OpenAI · Model release

GPT-6.1 Sol: the newer Sol release at the same base price

GPT-6.1 Sol is the newer Sol release at the same $2/$10 Standard short-context rates, with cached input at $0.10 per million tokens.

OpenAI

Released September 29, 2026

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What changed

  • 1.05M input context and 128K maximum output; reasoning effort supports low, medium, high, xhigh, and max. The `none` and `minimal` efforts are not supported.
  • The October 1 Artificial Analysis public table reports 52 at max effort (publisher-rounded). LiveBench reports 81.6 at max and $0.142 per successful task.

Best fit

  • Everyday coding
  • Computer use
  • Professional work on the OpenAI stack

What to be careful about

  • Use the Responses API for tool calling; Chat Completions is supported without tool calling.
  • Above 272K input, the whole request is billed at $4/$15. Benchmark task costs depend on effort and harness.
Dataset snapshot: GPT-6.1 Sol is also represented in the checked comparison dataset. Prices and benchmark figures carry their own field dates.