Near-Astra intelligence for a fifth of the price We’re introducing GPT‑6.1 Sol , an upgrade to GPT‑6 Sol that nearly matches GPT‑6 Astra’s intelligence on agentic coding, computer use, and professional work at one-fifth of Astra’s standard input and output token prices.

Cached input costs just $0.10 per million tokens —95% less than standard input pricing and 50% less than GPT‑6 Sol’s cached input pricing—giving developers more room to build and run capable agents that reuse context across requests.

A more capable Sol across tasks GPT‑6.1 Sol offers a new balance of capability and cost for important everyday work.

It delivers substantial improvements over GPT‑6 Sol across complex professional tasks, from writing and debugging code to understanding documents and executing multi-step business workflows.

On several of these evaluations, it approaches GPT‑6 Astra’s performance at substantially lower cost.

Coding On DeepSWE v1.1 , which evaluates complex software-engineering tasks in real codebases, GPT‑6.1 Sol matches GPT‑6 Astra at roughly one-fifth of the cost, while eclipsing GPT‑6 Sol’s best score by 6.4 percentage points at a lower reasoning effort and cost.

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