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OpenAI API: 2026-09-22 — Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna).

OpenAI API Changelog · article · Sep 22, 2026 · UTC

Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna). These reasoning models accept text and image inputs and generate text through the Responses and Chat Completions APIs. Standard pricing per 1M tokens for prompts with up to 272K input tokens: GPT-6 Sol: $2 input, $0.20 cached input, and $10 output. GPT-6 Luna: $0.10 input, $0.01 cached input, and $0.50 output. Compare capabilities in the model catalog, and see pricing for cache writes, longer prompts, and other processing tiers.

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recordType
page-entry
evidenceStatus
publisher-reported
region
Global

Evidence & attribution

First collected: 2026-09-22T22:51:10.705Z. This is not the publication date.