GPT-4.1 nano
by OpenAI
GPT-4.1 nano is a model from OpenAI, released on April 14, 2025. It has a 1M-token context window and can generate up to 33K output tokens. API pricing is $0.1 per 1M input tokens and $0.4 per 1M output tokens.
GPT-4.1 nano is OpenAI's fastest and cheapest model available in the GPT-4.1 family. It delivers exceptional performance at a small size with its 1 million token context window. Ideal for tasks like classification or autocompletion.
Key specs
| Provider | OpenAI |
|---|---|
| Release date | 2025-04-14 |
| License | proprietary |
| Context window | 1M tokens |
| Max output | 33K tokens |
| Input price | $0.1 / 1M tokens |
| Output price | $0.4 / 1M tokens |
| Intelligence Score | 1.6 |
| Coding index | -11.9 |
Quick answers
What is the context window of GPT-4.1 nano?
GPT-4.1 nano has a context window of 1M tokens, with a maximum output of 33K tokens per response.
How much does GPT-4.1 nano cost?
GPT-4.1 nano costs $0.1 per 1M input tokens and $0.4 per 1M output tokens through the API.
Is GPT-4.1 nano open source?
No. GPT-4.1 nano is a proprietary model from OpenAI (proprietary license).
When was GPT-4.1 nano released?
OpenAI released GPT-4.1 nano on April 14, 2025.
Compare on the AI leaderboard · All AI models
More models from OpenAI
- GPT-6 Astra (Reasoning) — OpenAI
- GPT-6.1 Sol (Reasoning) — OpenAI
- GPT-5.6 Terra (Reasoning) — OpenAI
- GPT-6 Sol (Reasoning) — OpenAI
- GPT-5.5 Pro (Reasoning) — OpenAI
- GPT-6 Luna (Reasoning) — OpenAI