Dev.to
7/9/2026

Codex is now ChatGPT Codex.
Short summary
OpenAI has renamed Codex to ChatGPT Codex, consolidating all product names under the main ChatGPT brand while reserving separate identities (Sol, Terra, Luna) for underlying models. This naming strategy mirrors Anthropic's approach: Claude as the primary brand umbrella with distinct model variants (Opus, Sonnet, Fable, Haiku). Consolidating product names reduces end-user confusion and ensures customers understand product offerings clearly.
- •Codex rebranded to ChatGPT Codex under the main ChatGPT product umbrella
- •Model names (Sol, Terra, Luna) separated from the product name
- •Naming strategy mirrors Anthropic's Claude model naming for clarity
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