GPT-5.4 Nano
GPT-5.4 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. Efficient pricing.
GPT-5.4 Nano is a multimodal AI model from OpenAI. It costs $0.200 per million input tokens and $1.250 per million output tokens (blended $0.515/M), with a 400,000-token context window.
- Strong general reasoning
- Tool use & function calling
- Long-form writing
- Production-grade reliability
- Multimodal: handles images alongside text
- Production assistants
- Long-document analysis
- Multi-step agent workflows
- Engineering copilots
Benchmarks
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See all 28 →Frequently asked questions
How much does GPT-5.4 Nano cost?
GPT-5.4 Nano costs $0.200 per million input tokens and $1.250 per million output tokens, for a blended reference rate of $0.515 per million tokens.
What is GPT-5.4 Nano's context window?
GPT-5.4 Nano supports up to 400,000 tokens of context in a single request.
What is GPT-5.4 Nano best for?
GPT-5.4 Nano is well suited to Strong general reasoning, Tool use & function calling and Long-form writing.
Who makes GPT-5.4 Nano?
GPT-5.4 Nano is developed and served by OpenAI.