AI Models & Assistants / Knowledge library
GPT-4.1 nano
Fastest, most cost-efficient version of GPT-4.1
Why learn GPT-4.1 nano?
Offers the documented OpenAI model capabilities through hosted.
The problem it solves
Provides model inference for supported text / image inputs.
Where it came from
GPT-4.1 nano: Fastest, most cost-efficient version of GPT-4.1 Published aliases: gpt-4.1-nano-2025-04-14. Input: text, image. Output: text. Checked 2026-10-13. Model capabilities are distinct from tools available in a particular agent.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Explain what GPT-4.1 nano does.
- Identify a use case for GPT-4.1 nano.
- Describe a limitation of GPT-4.1 nano.
- Name a compatible tool for GPT-4.1 nano.
- Compare GPT-4.1 nano against an alternative.
Documentation and sources
- Primary source / model card (developers.openai.com)
Catalog research notes
- See the AI Workbench for source dates, pricing evidence and configuration details.