GPT-5 Nano
by OpenAItext+image+file->text4 endpoints
Neura Intelligence Index
35.7/ 100
Rank
#244—
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
Long context
File input
Deterministic seed
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)
10000.0%
Country
🇺🇸US
Release Date
August 7, 20251y
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 | 8.7 | verified |
Performance Over Time
Pricing
Per 1M tokens
Input$0.05
Output$0.40
Cache read$0.0050
Added
August 7, 2025
Last synced 9/18/2026