GPT-5.1 Pro

GPT-5.1 Pro

OpenAI
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About

Claude Sonnet 4.5 is Anthropic’s latest frontier model, designed to excel in long-horizon coding, agentic workflows, and intensive computer use while maintaining safety and alignment. It achieves state-of-the-art performance on the SWE-bench Verified benchmark (for software engineering) and leads on OSWorld (a computer use benchmark), with the ability to sustain focus over 30 hours on complex, multi-step tasks. The model introduces improvements in tool handling, memory management, and context processing, enabling more sophisticated reasoning, better domain understanding (from finance and law to STEM), and deeper code comprehension. It supports context editing and memory tools to sustain long conversations or multi-agent tasks, and allows code execution and file creation within Claude apps. Sonnet 4.5 is deployed at AI Safety Level 3 (ASL-3), with classifiers protecting against inputs or outputs tied to risky domains, and includes mitigations against prompt injection.

About

GPT-5.1 Pro is the highest-performance version of the GPT-5.1 model family, designed for research-grade reasoning and advanced analytical workloads. It delivers deeper, more structured thinking, making it ideal for complex problem-solving across coding, science, finance, law, and technical research. Unlike the Instant and Thinking versions, GPT-5.1 Pro is built to maintain accuracy under heavy cognitive load, producing clearer logic and more reliable multi-step reasoning. Pro users also gain access to extended context windows, allowing significantly longer inputs and deeper information processing. While it supports the full range of ChatGPT features, GPT-5.1 Pro is optimized for precision, rigor, and high-stakes tasks. It is available exclusively to ChatGPT Pro and Business customers.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

AI engineers and product teams looking for an AI tool to build advanced agents, autonomous workflows, and large-scale software systems

Audience

GPT-5.1 Pro is ideal for researchers, technical professionals, and advanced users who require ChatGPT’s strongest reasoning capabilities for high-precision, high-complexity work

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

No information available.
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

OpenAI
Founded: 2015
United States
openai.com

Alternatives

Alternatives

Claude Opus 4.1

Claude Opus 4.1

Anthropic
Claude Opus 4.5

Claude Opus 4.5

Anthropic
Claude Sonnet 4

Claude Sonnet 4

Anthropic
ChatGPT Pro

ChatGPT Pro

OpenAI

Categories

Categories

Integrations

Amp
Augment Code
Bash
Brokk
C++
CSS
Doraverse
GitHub Copilot
Go
HTML
Java
JetBrains Junie
Kotlin
LaunchLemonade
Node.js
OpenCode
PHP
React
Verdent
Vertex AI

Integrations

Amp
Augment Code
Bash
Brokk
C++
CSS
Doraverse
GitHub Copilot
Go
HTML
Java
JetBrains Junie
Kotlin
LaunchLemonade
Node.js
OpenCode
PHP
React
Verdent
Vertex AI
Claim Claude Sonnet 4.5 and update features and information
Claim Claude Sonnet 4.5 and update features and information
Claim GPT-5.1 Pro and update features and information
Claim GPT-5.1 Pro and update features and information