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GPT-4.1 nano (Fast) – Model Docs — Person.run

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GPT-4.1 nano (Fast)

GPT-4.1 nano is the fastest, most cost-effective GPT 4.1 model.

Model overview

Model ID: openai/gpt-4.1-nano-fast
Provider: openai
Type: language
Context window: 1,047,576 tokens
Max output tokens: 32,768

Tags: file-input, implicit-caching, tool-use, vision, web-search, fast

Model pricing

Metric	Value
`Input tokens (/1M)`	`$0.20`
`Output tokens (/1M)`	`$0.80`
`Image generation`	`n/a`
`Cached input read (/1M)`	`$0.05`
`Cached input write (/1M)`	`n/a`
`Pricing source`	`gateway`

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