GPT-5.4
OpenAIProprietary
5 models2026Up to 400K ctx
About
GPT-5.4 is OpenAI's frontier reasoning model family, designed for complex real-world tasks including spreadsheet editing, frontend code generation, document understanding, image analysis, tool use, and deep web research. Released March 5, 2026, as the successor to GPT-5.2 and GPT-5.3-Codex. The family includes full, mini, nano, and cybersecurity-specialized variants.
Specifications(5 models)
| Model | Released | Context | Multimodal | Reasoning | Fn Calling | Tool Use | JSON Mode |
|---|---|---|---|---|---|---|---|
| GPT-5.4-Cyber | 2026-04 | — | Yes | Yes | No | No | No |
| GPT-5.4 | 2026-03 | — | Yes | Yes | Yes | Yes | Yes |
| GPT-5.4 Mini | 2026-03 | 400K | Yes | Yes | Yes | Yes | Yes |
| GPT-5.4 Nano | 2026-03 | — | Yes | No | Yes | Yes | Yes |
| GPT-5.3-Codex | 2026-02 | — | Yes | No | Yes | Yes | Yes |
Frequently Asked Questions
- What is GPT-5.4?
- GPT-5.4 is OpenAI's frontier reasoning model family, designed for complex real-world tasks including spreadsheet editing, frontend code generation, document understanding, image analysis, tool use, and deep web research. Released March 5, 2026, as the successor to GPT-5.2 and GPT-5.3-Codex. The family includes full, mini, nano, and cybersecurity-specialized variants.
- How many models are in the GPT-5.4 family?
- The GPT-5.4 family contains 5 models.
- What is the latest GPT-5.4 model?
- The latest model is GPT-5.4-Cyber, released in 2026-04.
