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GPT-6 Sol and Luna announced
zdnet.com

GPT-6 Sol and Luna announced

The gist

OpenAI released GPT-6 Sol and Luna on Sep 22, 2026, cutting API prices 50%.
Cheaper, more reliable models matter most to developers and teams running high-volume work.

How it unfolded

  1. Sep 4, 2026OpenAI released the first GPT-6 model, GPT-6 Astra, described as a faster model for handling more tasks than previous iterations.
  2. Sep 22, 2026OpenAI released GPT-6 Sol and GPT-6 Luna, cutting API prices for both models by 50% against GPT-5.6 promotional pricing.
  3. Sep 22, 2026The launch landed about 90 minutes after Anthropic shipped a new version of Opus 5.5.

Sources

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