OpenAI · llm model
GPT-5.4 mini
GPT-5.4 mini is an OpenAI language model released Mar 17, 2026; OpenAI's newest language model in our dataset is GPT-6.1 Terra. Proprietary, API access only. OpenAI's GPT-5.4 mini, released Mar 17, 2026 for faster, high-volume work with a 400K context. Verified against vendor sources on Oct 26, 2026.
Reported Last verified · All models · JSON · Markdown
- ReleasedMar 17, 2026
- Context window400K400,000 tokens
- Max output128K128,000 tokens
- LicenceProprietaryProprietary (API)
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Key facts
| Fact | Value | Source |
|---|---|---|
| Vendor | OpenAI | n/a |
| Released | Mar 17, 2026 | source |
| Status | generally available | n/a |
| API id | gpt-5.4-mini | source |
| Context window | 400,000 tokens (400K) | source |
| Max output | 128,000 tokens | source |
| Input | text, image | source |
| Output | text | source |
| Licence | Proprietary (API) | source |
| Pricing | $0.75 in / $4.5 out per 1M tokens | source |
Where GPT-5.4 mini sits in our data
- Released Mar 17, 2026 (week 12 of 2026), in March 2026. Other models in our data released that month: Gemma 4, Cohere Transcribe, Voxtral TTS, Mistral Small 4, Grok 4.20, GPT-5.4.
- The previous OpenAI model we track is GPT-5.4 (Mar 5, 2026), 12 days earlier.
- Of the 60 models in our data with a published context window, GPT-5.4 mini has the number 42 largest (400K tokens). Our data is not every model on the market.
- OpenAI tools we cover: Codex CLI, ChatGPT, OpenAI Agents SDK.
- All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.
How GPT-5.4 mini differs from GPT-5.4
Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.
- Listed price is $0.75 in and $4.5 out, against $2.5 in and $15 out for GPT-5.4 (per 1M tokens).
- Context window is 400K tokens against 1.05M for GPT-5.4.
- Both accept text, image as input.
- GPT-5.4 mini came out 12 days after GPT-5.4.
- Facts for the other model: GPT-5.4.
What we tested
Nothing yet. We have not run GPT-5.4 mini ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.
Sources
More from OpenAI
- GPT-5.4 (Mar 5, 2026)
- GPT-Image-2 (Apr 21, 2026)
- GPT-5.5 (Apr 24, 2026)
- GPT-5.5 Pro (Apr 24, 2026)
- GPT-Realtime-2.1 (Jul 6, 2026)
- GPT-Realtime-2.1 mini (Jul 6, 2026)
- GPT-5.6 Luna (Jul 9, 2026)