# GPT-4.1 Nano: AI model fact sheet

- **Provider:** openai
- **Released:** 2025-04-14
- **Context window:** 1,047,576 tokens
- **Parameters:** Not disclosed
- **API pricing:** $0.10 / 1M input, $0.40 / 1M output
- **OpenRouter ID:** openai/gpt-4.1-nano
- **Capabilities:** conversation, reasoning, code-generation, analysis

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.

## Benchmarks

| Benchmark | Score |
| --- | --- |
| MMLU | 80.1% |
| GPQA | 50.3% |
| Aider polyglot coding | 9.8% |
| Aider Polyglot | 9.8% |

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gpt-4.1-nano