KAT-Coder-Pro V2

KAT-Coder-Pro V2

StreamLake
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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.

About

KAT-Coder is an agentic AI coding system designed to go beyond traditional autocomplete tools by enabling end-to-end software development workflows driven by reasoning, planning, and execution. It is positioned as a flagship coding model within the KAT ecosystem, built specifically for “agentic coding,” where the model does not just generate snippets but can diagnose issues, propose fixes, run tests, and iterate across multiple files as part of a continuous development loop. It integrates directly with developer environments through API endpoints and proxy layers compatible with tools like Claude Code, allowing seamless use inside existing IDE workflows without changing the interface developers are already familiar with. KAT-Coder is trained using a multi-stage pipeline that includes supervised fine-tuning and large-scale reinforcement learning, enabling it to understand programming context, and reason over complex tasks.

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

Development teams and engineering organizations requiring a tool for generating, refactoring and maintaining large-scale codebases

Audience

Software developers and engineering teams who need an AI agent capable of handling end-to-end coding tasks, from debugging and refactoring to multi-file implementation within real development environments

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

Pricing

No information available.
Free Version
Free Trial

Pricing

$0.30 per month
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

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

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

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com/index/gpt-5-1-codex-max/

Company Information

StreamLake
United States
www.streamlake.ai/product/kat-coder

Alternatives

Claude Opus 4.5

Claude Opus 4.5

Anthropic

Alternatives

Devstral 2

Devstral 2

Mistral AI
DeepCoder

DeepCoder

Agentica Project
DeepSWE

DeepSWE

Agentica Project

Categories

Categories

Integrations

C++
ChatGPT
ChatGPT Enterprise
ChatGPT Plus
Codex CLI
GPT-5.1
GPT-5.2 Instant
GPT-5.5 Pro
GitHub
HTML
JavaScript
Microsoft Foundry
MiniMax
OpenAI
PHP
Ruby
TypeScript
Visual Basic
Visual Studio Code
Windsurf Editor

Integrations

C++
ChatGPT
ChatGPT Enterprise
ChatGPT Plus
Codex CLI
GPT-5.1
GPT-5.2 Instant
GPT-5.5 Pro
GitHub
HTML
JavaScript
Microsoft Foundry
MiniMax
OpenAI
PHP
Ruby
TypeScript
Visual Basic
Visual Studio Code
Windsurf Editor
Claim GPT-5.1-Codex-Max and update features and information
Claim GPT-5.1-Codex-Max and update features and information
Claim KAT-Coder-Pro V2 and update features and information
Claim KAT-Coder-Pro V2 and update features and information