GPT-5 Nano
text+image+file->text
GPT-5 Nano sits in the frontier tier, built for high-capability reasoning, tool use, and long-form output where capability outweighs cost. Available via OpenAI. 400,000-token context. Budget pricing.
GPT-5 Nano is a multimodal AI model from OpenAI. It costs $0.050 per million input tokens and $0.400 per million output tokens (blended $0.155/M), with a 400,000-token context window.
INPUT
$0.050/M
per million input tokens
OUTPUT
$0.400/M
per million output tokens
CONTEXT
400,000
tokens
What it is good at
- Strong general reasoning
- Tool use & function calling
- Long-form writing
- Production-grade reliability
- Multimodal: handles images alongside text
Typical use cases
- Production assistants
- Long-document analysis
- Multi-step agent workflows
- Engineering copilots
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
More from OpenAI
See all 28 →GPT-5.6 Sol
Frontier · 1,050,000 ctx
in $5.000/Mout $30.000/M
GPT-5.6 Terra
Balanced · 1,050,000 ctx
in $2.000/Mout $12.000/M
GPT-5.6 Luna
Efficient · 1,050,000 ctx
in $0.200/Mout $1.200/M
GPT-5.5
Frontier · 1,050,000 ctx
in $5.000/Mout $30.000/M
GPT-5.2
Frontier · 400,000 ctx
in $1.750/Mout $14.000/M
GPT-5.2-Codex
Coding · 400,000 ctx
in $1.750/Mout $14.000/M
Frequently asked questions
How much does GPT-5 Nano cost?
GPT-5 Nano costs $0.050 per million input tokens and $0.400 per million output tokens, for a blended reference rate of $0.155 per million tokens.
What is GPT-5 Nano's context window?
GPT-5 Nano supports up to 400,000 tokens of context in a single request.
What is GPT-5 Nano best for?
GPT-5 Nano is well suited to Strong general reasoning, Tool use & function calling and Long-form writing.
Who makes GPT-5 Nano?
GPT-5 Nano is developed and served by OpenAI.