OpenAI models

GPT and o-series model families. Publishes a deprecations page and commits to at least 6 months of notice for generally available models.

• GPT-6 Astraactive
• GPT-5.6 Solactive
• GPT-5.6 Terraactive
• GPT-5.6 Lunaactive
• GPT-5.5active
• GPT-5.4active
• GPT-5deprecated

Every fact on these pages is dated and links to a page OpenAI publishes itself.