Discover OpenAI's GPT-5.1 Chat Model

Engage in fast, intelligent conversations with adaptive reasoning.

Input: file · image · text Output: text Context: 128,000 tokens Release: 2025-11-13

OpenAI's GPT-5.1 Chat, released on November 13, 2025, is a versatile AI model designed for engaging conversations. With a context length of 128,000 tokens, it excels in handling both text and image inputs, producing text outputs. This model is optimized for low-latency interactions, making it ideal for high-throughput tasks. It employs adaptive reasoning to enhance accuracy, particularly in math, coding, and multi-step queries, while maintaining a warm and conversational tone. GPT-5.1 Chat is suitable for users who require quick responses without sacrificing quality, making it a valuable tool for various interactive applications.

Use Cases

Here are a few ways teams apply OpenAI: GPT-5.1 Chat in practice—from fast drafting to multimodal understanding. Adapt these ideas to your workflow.

Interactive customer support

Real-time coding assistance

Dynamic content generation

Educational tutoring and Q&A

Creative writing and brainstorming

Key Features

A quick look at the capabilities that make this model useful in real projects.

Optimized for low-latency chat

Handles text and image inputs

High context length of 128,000 tokens

Warm and conversational tone

Improved accuracy on complex queries

Specs

Overview

Vendor
openai

Model ID
openai/gpt-5.1-chat

Release
2025-11-13

Modalities & context

Input
file · image · text

Output
text

Context
128,000 tokens

Parameters & defaults

Supported parameters: max_tokens, response_format, seed, structured_outputs, tool_choice, tools

Defaults: temperature 0.2, top_p 0.95

Benchmark tests: OpenAI: GPT-5.1 Chat

We ran this model against a few representative prompts to show its range. Review the outputs below and be the judge.

Text

Prompt:

Write 150 words on how AI might positively upend work, leisure and creativity

Artificial intelligence has the potential to reshape work, leisure, and creativity in surprisingly positive ways. In the workplace, AI can take over routine, repetitive tasks, allowing people to focus on roles that require judgment, empathy, and strategic insight. This shift could raise overall job satisfaction and open opportunities for more meaningful careers. In leisure, AI-driven tools may help individuals reclaim time by simplifying daily planning, personalizing entertainment, and offering smarter systems that manage chores efficiently. As a result, people could spend more time on relationships, hobbies, and rest. In creativity, AI can serve as a powerful collaborator, generating ideas, exploring variations, and expanding what individuals can achieve regardless of skill level. Rather than replacing human imagination, AI can amplify it, enabling more people to express themselves through art, writing, design, and invention. Together, these shifts suggest a future where technology supports richer, more balanced, and more creative lives.

Run this prompt on Upend.AI

Image

Prompt:

Generate an SVG of a pelican riding a bicycle.

Run this prompt on Upend.AI

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Chat with GPT-5.1 Chat

up.end

/ˌəpˈend/

verb

To “upend” means to completely disrupt, overturn, or drastically change the established order or structure of something. It implies a significant shift or alteration that can potentially have far-reaching consequences. When something is upended, it is turned upside down or transformed in a way that challenges conventional norms or expectations. The term often carries a sense of innovation, transformation, and sometimes even a hint of upheaval, indicating that the changes are not just minor adjustments but rather a fundamental reimagining of the status quo.

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