This model is deprecated
GPT-4.1 nano and can no longer be run here. Its evaluation results and details remain available for reference. Try GPT-5.4 Nano instead.
GPT-4.1 nano, released by OpenAI in April 2025, is the smallest and most cost-efficient member of the GPT-4.1 family. It is multimodal, supporting both text and image inputs, and retains the family’s extended 1 million-token context window—allowing it to handle large documents or codebases despite its lightweight design. Its training knowledge extends to June 2024.
GPT-4.1 nano prioritizes speed and affordability over raw reasoning power. While less capable than GPT-4.1 and GPT-4.1 mini, it is well-suited for high-volume or latency-sensitive workloads such as classification, autocomplete, content moderation, and lightweight assistants. This makes it an attractive option for developers seeking scalable deployment where efficiency is more critical than deep reasoning.
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Usage
Past 30 DaysNot available
Not in Playground
| Category | Passed | Score |
|---|---|---|
| Object Understanding | 9 / 14 | 64.3% |
| Spatial Understanding | 8 / 19 | 42.1% |
| Defect Detection | 6 / 15 | 40% |
| Document Understanding | 3 / 9 | 33.3% |
| Object Counting | 1 / 10 | 10% |
Scores based on single evaluation run · Methodology
View all Vision Evals →GPT-4.1 nano costs $0.100 per 1M input tokens and $0.400 per 1M output tokens.
Pricing updated Jun 22, 2026
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License terms and commercial-use guidance for GPT-4.1 nano.
License information is provided as a guide and is not legal advice.