GPT-5.4 nano
GPT-5.4 nano is a deprecated model for small, repeated tasks such as classification, extraction and ranking. Its default reasoning setting is none.
Deprecated API; check access details
A small tier with a separate input ceiling
The model has a 400,000-token total window, a 272,000-token maximum input and a 128,000-token output limit. Reasoning can be set through xhigh. The documented snapshot is from March 2026.GPT-5.4 nano official model documentation
Review an existing integration
Practical guidance. For a classification queue, define allowed categories and review uncertain cases. Compare a current replacement on important errors as well as average accuracy. Keep the decision rule in the application instead of relying on informal prompt wording.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Status | Deprecated API; check access details |
| Access | API |
| Model identifiers | gpt-5.4-nanogpt-5.4-nano-2026-03-17 |
| Context window | 400,000 tokens Published context for this deprecated release GPT-5.4 nano official model documentation |
| Maximum output | 128,000 tokens Published maximum output, bounded by the remaining context GPT-5.4 nano official model documentation |
| Provider status | Deprecated in the current OpenAI model catalog; confirm remaining account access.GPT-5.4 nano official model documentation |
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