GPT-5.4 Nano

Mar 2026
Retires Apr 1, 2027Move toGPT-6 LunaNewer version
GPT-5.4 Nano
Compare in
on
—per task?
$0.20 / $1.25per 1M in / outcache $0.02
173 tok/sfirst token in 5.3 s?
400Kcontext

Rankingat medium effort?

Full ranking →
1Opus 5.561.42Fable 5.159.13Gemini 4 Argon57.14Fable 555.55Sonnet 5.555
···
138KAT Coder Pro V216.1139GPT-5.4 Nano15.9140Qwen3 235B A22B Thinking 250715.9

Strong at

B
Coding#63 of 132Agents & work tasks#87 of 175Tool calling#108 of 242Reasoning#139 of 334Science#142 of 312Long context#135 of 273Knowledge#118 of 318Instructions#72 of 245
C
Vision#96 of 124

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperMiniMax M3.1 Flashthinking×3-43%$0.22Complete model response must be appendedBetterGPT-6 Lunalow+27%-57%$0.005Function calling only with none · Chat Completions+3OpenMiMo v2.6 Prothinking×3.1+18%$0.13Pass back reasoning_content+3CheaperClaude Haiku 5.5max×2.8-57%$0.21Remove sampling parameters+5CheaperGLM 5.3 FlashmaxOpen×2.5-49%$0.28Defaults to max · Self-hosted+4

History

5 versions
0102030Apr 25Jul 25Oct 25Jan 26Release dateHumanity's Last Exam4.15 · Aug5.4 · Mar
0102030Apr 25Jul 25Oct 25Jan 26Release dateHumanity's Last Exam4.15 · Aug

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.2≈20#121
AA Omniscience Index-18#119
AA Omniscience · Accuracy21.9#136
AA Omniscience · Hallucination Rate51.1#92
Humanity's Last Exam15.9#139
GPQA Diamond76.1#143
AA-LCR (long context) 1.167.3#135
IFBench (instructions)64.4#72
CritPt (physics)5.1#78
ARC-AGI-1 · public evaluation43.4#51
ARC-AGI-2 · public evaluation3.5#51
ARC-AGI-1 · semi-private33#53
ARC-AGI-2 · semi-private1.9#56

FAQ

How much does GPT-5.4 Nano cost?›

$0.20 per 1M input tokens and $1.25 per 1M output tokens; cached input $0.02 per 1M.

Is GPT-5.4 Nano free to use?›

There is no free API; the cheapest paid price is $0.20 per 1M input tokens.

How good is GPT-5.4 Nano, and what is it best at?›

#139 of 334 in Chat & Knowledge, #63 of 132 in Coding, #81 of 133 in Agents & Tool Use, #109 of 195 in Writing & Language, #96 of 124 in Vision & Documents.

Is GPT-5.4 Nano better than GPT-5 Nano?›

On Humanity's Last Exam, GPT-5.4 Nano scores 28.3 vs 9.5 — higher.

How can I use GPT-5.4 Nano?›

Through the API of Azure, OpenAI.

What is the context window of GPT-5.4 Nano?›

400K tokens, with up to 128K output tokens.

When was GPT-5.4 Nano released? Is there a newer version?›

Released 2026-03-17. It has been superseded by GPT-6 Luna.

Is GPT-5.4 Nano open source?›

No, GPT-5.4 Nano is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.

Can GPT-5.4 Nano read images?›

It accepts text and images, PDF files as input.

What is GPT-5.4 Nano?›

GPT-5.4 Nano is a closed language model from OpenAI, released Mar 2026, the successor to GPT-5 Nano.

What are the best alternatives to GPT-5.4 Nano?›

MiniMax M3.1 Flash (cheaper), GPT-6 Luna (better), MiMo v2.6 Pro (open weights).