GPT-5.4
openai/gpt-5.4GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
$2.50Input, per million tokens
$15Output, per million tokens
1.05MContext window
128KLongest answer
1.05M tokens of context — about 787,500 words, on a scale that ends at 2M.
What it can do
- Reasoning
- Vision
- Tool use
- Takes text
- Takes image
- Takes file
- Gives text
Released 5 Mar 2026 · checked 3 Oct 2026.
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