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OpenAI introduces GPT-6 Sol and Luna for ChatGPT Work and Codex

By The Likely · Updated Sep 28, 5:24 PM ET · Drawn from 1 source · Written by AI, checked against sources

OpenAI launched GPT-6 Sol and Luna on September 22 for ChatGPT Work and Codex. The lab claims GPT-6 Sol substantially improves on FrontierCode over GPT-5.6 Sol and matches Claude Fable 5.1 xhigh at much lower cost.

Why it mattersLower API prices give developers more room to iterate and tackle more ambitious tasks in Codex without using Chat models.

Which coding AI will rank highest by September 30? Claude leadsAlmost certain96%

How we got here

  1. OpenAI introduced GPT-6 Astra and described its improvements, including coding capabilities. Openai
  2. OpenAI announced GPT-6 Sol and Luna for ChatGPT Work and Codex. Openai

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