GPT-5 Nano
by OpenAItext+image+file->text4 endpoints
Neura Intelligence Index
36.7/ 100
Rank
#210—
Confidence
mediumBenchmarks
4(10% coverage)
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
Modalities
Input
TextImageFile
Output
Text
Technical Specifications
Context Window
400K tokens
Max Output
128K tokens
Knowledge Cutoff
2024-05-31
Tokenizer
GPT
Content Moderation
Enabled
Uptime (24h)
9799.3%
Country
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools
Benchmark Performance
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 85.2 | verified |
| FrontierMath | 9.6 | verified |
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 71.2 | verified |
| Humanity's Last Exam |
Performance Over Time
Pricing
Per 1M tokens
Input$0.05
Output$0.40
Cache read$0.0050