GPT-5.1-Codex-MaxOpenAI
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Related Products
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About
CodeLazr is a web-based AI coding agent that edits your GitHub repos directly from the browser. No install, no cloning, no containers. Pick any OpenRouter model, including free ones, or bring your own API key. Every change is staged as a diff you review before it commits, auto-commits, or opens a pull request. CodeLazr is built to make cheap and free AI models reliable for real coding: automatic retries with a fallback chain of models, a second model that reviews each diff before commit, and detectors for the common ways weaker models fail. Includes built-in prompt templates for common tasks like fixing bugs, writing tests, refactoring, and writing docs. More than 1,400 test runs are published publicly on the CodeLazr stats page, failures included. Free plan with free models and no card required, Pro at $10 per month, or bring your own key to use it free forever.
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About
GPT-5.1-Codex-Max is the high-capability variant of the GPT-5.1-Codex series designed specifically for software engineering and agentic code workflows. It builds on the base GPT-5.1 architecture with a focus on long-horizon tasks such as full project generation, large-scale refactoring, and autonomous multi-step bug and test management. It introduces adaptive reasoning, meaning the system dynamically allocates more compute for complex problems and less for simpler ones, to improve efficiency and output quality. It also supports tool use (IDE-integrated workflows, version control, CI/CD pipelines) and offers higher fidelity in code review, debugging, and agentic behavior than general-purpose models. Alongside Max, there are lighter variants such as Codex-Mini for cost-sensitive or scale use-cases. The GPT-5.1-Codex family is available in developer previews, including via integrations like GitHub Copilot.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Developers, indie hackers, and vibe coders who want an AI coding agent without a subscription or local setup
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Audience
Development teams and engineering organizations requiring a tool for generating, refactoring and maintaining large-scale codebases
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
$10/month
Free Version
Free Trial
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Pricing
No information available.
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationCodeLazr
Founded: 2026
www.codelazr.com
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Company InformationOpenAI
Founded: 2015
United States
openai.com/index/gpt-5-1-codex-max/
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Categories |
Categories |
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Integrations
GitHub
C
ChatGPT
ChatGPT Enterprise
ChatGPT Plus
F#
GPT-5.1
GPT-5.1 Pro
GPT-5.3 Instant
GPT-5.4
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Integrations
GitHub
C
ChatGPT
ChatGPT Enterprise
ChatGPT Plus
F#
GPT-5.1
GPT-5.1 Pro
GPT-5.3 Instant
GPT-5.4
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