OpenAIactive

GPT-5 Nano

gpt-5-nano

Smallest GPT-5 model optimized for speed and cost.

Context Window

128K

tokens

Max Output

8.2K

tokens

Input Price

$0.05

per 1M tokens

Output Price

$0.40

per 1M tokens

Details

Familygpt-5

Training Cutoff2025-10-01

ReleasedJanuary 15, 2026

Capabilities

FunctionsStreamingJSON ModeCodeTool Use

Documentation

https://api.openai.com/v1/chat/completions

Evaluation Scores(3 benchmarks)

HumanEvalFunction-level Python code generation

72.5%

MATH-500Competition-style math

65%

MMLU-ProHarder successor to MMLU

62%

Quick Access

curl pikaainews.com/api/models/openai-gpt-5-nano

npx pika-models info openai-gpt-5-nano

Get API Access

Official

OpenAI

Official OpenAI API. Direct access to GPT, o-series, DALL-E.

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