gpt-4.1-nano

gpt-4.1-nano includes significant improvements on quality and safety while supporting efficient reasoning capabilities. It's the most efficient model in the GPT-4.1 series, ideal for applications requiring speed and lower resource consumption.

Key Capabilities

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  Multiple APIs support: gpt-4.1-nano is available in Responses API and Chat Completions API with Responses API supporting seamless integration with multiple tools and enhanced transparency with the reasoning summary as part of the model output.
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  Reasoning summary: In the Responses API, gpt-4.1-nano now supports reasoning summary in its output providing more insights into its thinking process. This enhances the explainability and the effectiveness of the resulting actions and tools that leverage the insights for even better outcomes.
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  Multimodality: With the addition of vision input capabilities, gpt-4.1-nano expands its reasoning capability to process and analyze visual data, extracting valuable insights and generating comprehensive text outputs. This is supported in both Responses API and Chat Completions API.
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  Full tools support includes parallel tools calling: gpt-4.1-nano is an efficient reasoning model with full tools support similar to the mainline models including parallel tool calling. Use gpt-4.1-nano for the next generation of agentic solutions. This capability is supported in both Responses API and Chat Completions API.

Model Variants

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  gpt-4.1: The most capable model in the GPT-4.1 series, offering enhanced reasoning abilities. Now generally available.
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  gpt-4.1-mini: A balanced option in the GPT-4.1 series, offering good performance with moderate resource requirements.
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  gpt-4.1-nano: The most efficient model in the GPT-4.1 series, ideal for applications requiring speed and lower resource consumption.
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  gpt-4o: The most capable model in the GPT-4o series, offering enhanced reasoning abilities. Now generally available.
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  o4-mini: A faster and more cost-efficient option in the o4 series, ideal for coding tasks requiring speed and lower resource consumption.

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