OpenAI: GPT-4.1 Nano

openai/gpt-4.1-nano

Created Apr 14, 20251,047,576 context

$0.10/M input tokens$0.40/M output tokens

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million token context window, and scores 80.1% on MMLU, 50.3% on GPQA, and 9.8% on Aider polyglot coding – even higher than GPT‑4o mini. It’s ideal for tasks like classification or autocompletion.

OpenAI: GPT-4.1 Nano

openai/gpt-4.1-nano

Created Apr 14, 20251,047,576 context

$0.10/M input tokens$0.40/M output tokens

Sample code and API for GPT-4.1 Nano

OpenRouter normalizes requests and responses across providers for you.

OpenRouter provides an OpenAI-compatible completion API to 400+ models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.

In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

Using third-party SDKs

For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.