GPT-5.4

Retired

OpenAI positioned GPT-5.4 as its frontier model for complex professional work, with a 1.05M token context window and broad rollout across ChatGPT, Codex, and the API.

Retired

The first-party endpoint is retired. Partner-channel availability is tracked separately.

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Input, output, and cached rates with source and verification time, plus same-workload cost examples.

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Modality:LLM

Release:Mar 5, 2026

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Monthly spend on GPT-5.4

This model has no comparable stored rate yet, so a spend-based estimate is unavailable.

Latest changes

OpenAI introduced GPT-5.4 across ChatGPT, Codex, and API

Apr 13, 2026• Critical Update

OpenAI launched GPT-5.4 on March 5, 2026, with rollout to paid ChatGPT users, all Codex users, and immediate API availability. OpenAI also exposed GPT-5.4 Pro in the API, pricing GPT-5.4 at $2.50 input / $0.25 cached input / $15 output per 1M tokens and GPT-5.4 Pro at $30 input / $180 output per 1M tokens.