GPT-5 Nano
OPENAI Developer Architecture Profile
Intelligence (ELO)1483Chatbot Arena Verified
Max Context Limit400,000Max Out: 128,000 tokens
Prompt Caching90% OFF$0.0050 / 1M cached
Standard API / 1M$0.45🧠 Deep Reasoner
Model Capabilities & Contract SLAs
- Coding & Logic
- Fictional
- Reasoning
- Agentic
- 📋 Strict JSON Schema
- 🛠️ Native Tool Calling
- 🧠 Extended Test-Time Reasoning
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...
Granular Pricing Matrix
Input Tokens (Standard Prompt)$0.05 / 1M
⚡ Cached Input (Prompt Cache Read)90% OFF$0.0050 / 1M
Output Tokens (Completion)$0.40 / 1M
Pricing data via OpenRouter. Sync: 10/2/2026
Evaluate Competitors
VS Engine MatchupGPT-5 Nano vs Anthropic: Claude Opus 5.5VS Engine MatchupGPT-5 Nano vs OpenAI: GPT-5.5VS Engine MatchupGPT-5 Nano vs Google: Nano Banana (Gemini 2.5 Flash Image)VS Engine MatchupGPT-5 Nano vs OpenAI: GPT-5 Nano (batch)VS Engine MatchupGPT-5 Nano vs Google: Gemini 2.5 Flash Lite (batch)VS Engine MatchupGPT-5 Nano vs Google: Gemini 2.5 Flash