gpt-5.1

gpt-5.1

gpt-5.1 is designed for logic-heavy and multi-step tasks.
Azure OpenAI
Direct from Azure
Version: 2025-11-13
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About this model

This model is provided through the Azure OpenAI Service.

Key model capabilities

GPT-5.1 builds on GPT-5 with improvements that make interactions more reliable, flexible, and user-friendly. The focus is on delivering clearer responses, better adaptability, and enhanced control for diverse tasks. Key highlights include:
  • Greater consistency: Produces more predictable and accurate outputs aligned with user instructions.
  • Adaptive reasoning: Handles complex queries with improved depth while remaining efficient for simpler tasks.
  • Expanded context handling: Supports longer inputs for multi-step workflows and richer conversations.
  • Refined customization: Offers better control over tone, style, and structured output for tailored experiences.
  • Broader applicability: Strengthens performance across a wide range of domains while maintaining clarity and safety.

Key use cases

GPT-5.1 is ideal for tasks that require long-form reasoning and synthesis, such as analyzing complex documents or generating detailed reports, and for interactive workflows like spreadsheet editing, structured content creation, and coding assistance. It also excels in customizable communication, enabling tailored responses for support, education, and executive summaries across diverse domains.

Out of scope use cases

OpenAI has incorporated additional safety measures including new techniques to help the models refuse unsafe requests. These advancements make the o1 series some of the most robust models available. OpenAI measures safety is by testing how well models continue to follow its safety rules if a user tries to bypass them (known as "jailbreaking"). In OpenAI's internal tests, GPT-4o scored 22 (on a scale of 0-100) while o1-preview model scored 84. You can read more about this in the OpenAI's system card and research post .

Quick facts

Model providerAzure OpenAI
TypeChat completion, Responses
LifecycleGenerally available (GA)
Input typetext, image
Output typetext
Context window400k
Token limits128k output

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