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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 95% of the 192 commercial models tracked here
- 7 of 88 OpenAI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for GPT-5 Nano, measured by Artificial Analysis. Higher is better. Measurement mode: high.
Models at this level cost $0.88 per 1M tokens (median of 24) — this one costs $0.14.
Cheaper and better on this index: GLM 5.3 Flash · DeepSeek V4 Flash 0731 · DeepSeek V4 Flash 0423 and 5 more
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. It scores 20.1 on the Artificial Analysis intelligence index.
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 67.6%, MMLU-Pro 78%, Humanity's Last Exam 9.5%, Long Context Reasoning 43.7%, LiveCodeBench 78.9%, SciCode 36.6%, AIME 2025 83.7%, IFBench 67.6%, τ²-Bench 36.5%, Terminal-Bench Hard 12.1%. It is particularly used for mathematical reasoning.