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OpenAI model product

GPT-5-nano

GPT-5 nano is the fastest, cheapest version of GPT-5 from OpenAI.

Updated Aug 12, 2026. Default version: GPT-5 nano

Compare
LLMBoard score31.1GPT-5 nano
Coverage60%5 benchmark families
Context window400KTokens
Official input price$0.05OpenAI API

On this page

  • Specification
  • Capability
  • Benchmarks
  • Arena
  • Runtime
  • Pricing
  • Versions
  • About
  • Compare
  • Similar models
  • FAQ

GPT-5-nano Specifications

Technical details for the model's default version.

Version
GPT-5 nano
Released
Aug 7, 2025
Knowledge cutoff
May 30, 2024
Parameters
N/A
Context window
400K
Max output
128K
Inputs
image, text
Outputs
text
Open weights
No
License
Proprietary

GPT-5-nano Capability Profile

This profile uses the model's current scored version. Arena ratings and prices are shown separately.

GPT-5 nano category scores

GPT-5-nano Benchmark Results

Benchmark scores for GPT-5 nano.

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FrontierMath9.6%141718.8%CAug 11, 2026
HMMT 202575.6%263321.9%CAug 11, 2026
AIME 202585.2%6011447.8%CAug 11, 2026
Humanity's Last Exam8.7%84939.8%CAug 11, 2026
GPQA71.2%12323447.6%CAug 11, 2026

GPT-5-nano Arena Results

Preference and agent-evaluation results for the default version.

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visionoverall921161.73,973N/AAug 6, 2026
vision style controloverall981147.63,973N/AAug 6, 2026
textoverall2041320.48,293N/AAug 10, 2026
text style controloverall2081337.58,293N/AAug 10, 2026

GPT-5-nano Runtime Performance

Provider-specific output speed and catalog latency for GPT-5 nano. Runtime does not affect the capability score.

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OpenAI500 tok/s0.3 s400K128KAug 11, 2026

Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.

GPT-5-nano Pricing

Official vendor API pricing appears first, followed by individual provider offers.

Official API
$0.05 input, $0.40 output per 1M
Official provider
OpenAI
Lowest third-party
From $0.05 input, $0.40 output per 1M via Impossibl
Tracked offerings
10
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Impossiblopenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
NanoGPTopenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
FastRouteropenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
NEAR AI Cloudopenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
OrcaRouteropenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
Kilo Gatewayopenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
Merge Gatewayopenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
Vercel AI Gatewayopenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
OpenRouteropenai/gpt-5-nanoglobal$0.05$0.40400KAug 11, 2026
OpenAIgpt-5-nanoglobal$0.05$0.40400KAug 11, 2026

Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.

GPT-5-nano Versions

Available versions of this model. The score column identifies the version used in the overall ranking.

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GPT-5 nanoAug 7, 202531.1N/A400K128KNoProprietary

What is GPT-5-nano?

Key information about GPT-5-nano and its available data.

GPT-5 nano is the fastest, cheapest version of GPT-5 from OpenAI. It is well-suited for summarization and classification tasks with average reasoning capabilities and very fast speed.

Data as of 2026-08-11.

GPT-5-nano vs nearby models

Open a comparison with the three ranked models immediately above and below this model.

GPT-5-nanovsGPT-4.1GPT-5-nanovsQwen3 VL 30B A3B ThinkingGPT-5-nanovsQwen3 32BGPT-5-nanovsLlama 3.1 Nemotron Ultra 253BGPT-5-nanovsKimi k1.5GPT-5-nanovsGemini 2.0 Flash Thinking

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FAQ

Common questions about GPT-5-nano.

When was GPT-5-nano released?

GPT-5-nano's default version was released on Aug 7, 2025.

How much does GPT-5-nano cost?

GPT-5-nano's official API price is $0.05 per million input tokens and $0.40 per million output tokens via OpenAI. The lowest tracked third-party offer starts at $0.05 input and $0.40 output via Impossibl.

Who created GPT-5-nano?

GPT-5-nano was created by OpenAI.

What is the context window for GPT-5-nano?

The default version has a 400K token context window.

Is GPT-5-nano open weight?

No. The default version is not marked as having publicly available weights.

How many API providers offer GPT-5-nano?

10 provider offerings are linked to the default version.

What models should I compare GPT-5-nano with?

Nearby ranked alternatives include GPT-4.1, Qwen3 VL 30B A3B Thinking, Qwen3 32B.