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GPT-5 NanoAPI
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.
Prices update automatically — checked daily against provider list prices.
- $0.14 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 93% of the 226 commercial models tracked here
- 10 of 101 OpenAI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for GPT-5 Nano, measured by Artificial Analysis. Higher is better. Measurement mode: Minimal.
About this model
GPT-5 Nano is a commercial AI model by OpenAI. The specifications below are tracked automatically: pricing is refreshed daily from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is GPT-5 Nano?
GPT-5 Nano is an AI language model from OpenAI. It is a proprietary model, available through an API.
Is GPT-5 Nano free?
GPT-5 Nano is not free: it costs $0.05 per million input tokens and $0.4 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is GPT-5 Nano good at?
Independent benchmarks from Artificial Analysis give it GPQA 42.8%, MMLU-Pro 55.6%, Humanity's Last Exam 4%, Long Context Reasoning 20%, LiveCodeBench 47%, AIME 2025 27.3%, IFBench 32.5%, τ²-Bench 25.7%, Terminal-Bench Hard 6.8%. It is particularly used for mathematical reasoning.