LLMAPI only

GPT-5 nano

OpenAI

Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error

Superseded by GPT-5.4 nano

Specifications

Type: LLM
Access: API only
Released: August 7, 2025
License: Proprietary
Context window: 400,000 tokens
Knowledge cutoff: May 30, 2024
Output speed: 500 tok/s
Latency (TTFT): 0.3s
Input: Text, Image
Output: Text
API pricing: $0.05 in · $0.40 out / 1M tokens

Capabilities

Function callingStructured outputWeb searchCode execution

Benchmarks

Reasoning

71.2

Coding

78.9

Math

AIME 2025	85.2
FrontierMath	9.6
HMMT 2025	75.6

General

Humanity’s Last Exam	8.7
MMLU-Pro	78

Our take

Smallest GPT-5 variant, aimed at high-volume, low-latency, and embedded workloads.

Links

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