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Text Models

Text Models

Text model API entry point and endpoint selection guide.

Text models use the OpenAI-compatible conversation APIs rather than the asynchronous media generation endpoint.

Choose an endpoint

EndpointBest for
Chat CompletionsExisting OpenAI Chat Completions SDKs and compatible clients
ResponsesNew projects, unified response objects, reasoning, and multi-turn input

Current public models

Confirmed public CodexReverse text models are gpt_5_4, gpt_5_5, gpt_5_6_sol, gpt_5_6_luna, and gpt_5_6_terra.

Actual model availability, region, API-key access, parameters, and pricing follow GET /v1/models.