Model · Multimodal language model
GPT-5.4
The GPT-5.4 flagship line for professional work with a 1M-token context window, exposed as the gpt-5.4 alias over the gpt-5.4-2026-03-05 snapshot through OpenAI's managed developer API and Azure Foundry, without downloadable model weights.
- Developer
- OpenAI
- Distribution
- Developer API · Third-party hosting
- Artifact licensing
- Proprietary access
- License scope
- Reviewed release artifacts and mandatory terms; not an assessment of training code or training data openness.
- Licenses
- OpenAI Services Agreement
- Boundary
- This record represents the GPT-5.4 release whose API page identifies gpt-5.4-2026-03-05 as the fixed snapshot behind the gpt-5.4 alias; the API deprecation page carries no retirement entry for this base line as of review. ChatGPT, the GPT-5.4 Mini, Nano, Pro, and invite-only Cyber siblings, later GPT releases, fine-tuned derivatives, and the OpenAI API platform itself are separate service, application, or model boundaries.
Risk statements
“High capability” · Precautionary
As we did for gpt-5.2-thinking before it, we are continuing to treat gpt-5.4-thinking as High capability in the Biological and Chemical domain. We have applied the corresponding safeguards for this model as described in the GPT-5 system card. As we did for gpt-5.3-codex, we are treating gpt-5.4-thinking as High capability in the Cybersecurity domain, and applied safeguards as described in the Safeguard section below.
- Risk areas
- Biological or chemical · Cyber
- Covers
- The model itself
Read the developer's statement ↗ · 2026-10-09 · Research confidence: Medium
OpenAI names this release against “High capability” in biological or chemical and cyber capability, as a precaution. The statement covers the model itself. This is the developer's own statement, not an Atlas risk rating.
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