GPT-5 Nano
JSON →The smallest and fastest model in the GPT-5 family, designed for lightweight tasks and edge deployment.
Specs
context window 272K tokens
max output 128K tokens
input price $0.05 / 1M tokens
output price $0.4 / 1M tokens
Capabilities
tool-usejson-modestreamingcode-generationfunction-callingvisionprompt-cachingreasoning
Dates
releasedAug 2025
knowledge cutoffJun 2025
Aliases
gpt-5-nano Resources
API
full doc /v1/models/gpt-5-nano-2025-08-07