LLMAPI only

GPT-5.4 nano

OpenAI

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

Specifications

Type: LLM
Access: API only
Released: March 17, 2026
License: Proprietary
Context window: 400,000 tokens
Knowledge cutoff: August 31, 2025
Output speed: 157 tok/s
Latency (TTFT): 0.55s
Input: Text, Image
Output: Text
API pricing: $0.20 in · $1.25 out / 1M tokens

Capabilities

Function callingStructured outputWeb search

Benchmarks

Reasoning

81.7

General

Humanity’s Last Exam

26.5

Our take

Smallest, lowest-latency tier of the GPT-5.4 generation.

Links

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