GPT-5 Nano
by OpenAItext+image+file->text3 endpoints
Overview
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
Capabilities
Text generation
Image understanding
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Web search
Long context
Modalities
Input
TextImageFile
Output
Text
Technical Specifications
Context Window
400K tokens
Knowledge Cutoff
2024-05-31
Tokenizer
GPT
Uptime (24h)
9765.0%
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Pricing
Per 1M tokens
Input$0.05
Output$0.40
Cache read$0.01
Web search$10000.00