GPT-5.1 (by OpenAI)

Overview

OpenAI's advanced multimodal language model with enhanced reasoning capabilities.

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Quick facts

• Modes: Text → Text · Image → Text · Video → Text

• Default output / size: Text responses (token-limited)

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What it's great for

• Enhanced reasoning and complex analysis.

• Multi-step problem-solving with improved accuracy.

• Multimodal understanding across text, images, and video.

• Code generation and technical documentation.

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Parameters

Control	Type	Default	Notes
Prompt	Text	—	Natural-language instruction (required)

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Modes

Mode	Estimated time	Required inputs	Typical use
Text → Text	Streaming	Prompt	Reasoning, code, long-form
Image → Text	Streaming	Images, Prompt	Image analysis
Video → Text	Streaming	Videos, Prompt	Transcription & summarization

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Prompt tips

• Be explicit about length and format (bullets, code block, JSON).

• Provide context and relevant assets for best results.

• Use for complex multi-step reasoning tasks.

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