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Description

Claude Fable 5.1 is a frontier AI model from Anthropic built for demanding coding, research, knowledge work, and autonomous multi-step workflows. It delivers higher performance than Claude Fable 5 across benchmarks covering scientific research, terminal-based coding, business automation, computer use, multidisciplinary reasoning, and agentic software development. The model is particularly suited to long-running tasks where it must investigate problems, use tools, maintain context, verify intermediate work, and continue operating with limited supervision. Early evaluations highlighted improvements in areas such as root-cause analysis, code review, browser automation, financial research, document drafting, slide creation, and complex engineering workflows. Fable 5.1 also introduces lower cache-read pricing, which Anthropic says can reduce costs by roughly 25% for typical workloads and considerably more for context-heavy agentic tasks. Enterprise customers can use new privacy-oriented safeguard options that are designed to support zero-data-retention-style deployments while still maintaining misuse protections. Cybersecurity safeguards have also been refined to intervene less often on legitimate defensive work while continuing to restrict higher-risk activities such as exploit generation. Anthropic offers the model through Claude Code, Claude Cowork, Claude.ai, the Claude API, and supported cloud platforms. Claude Fable 5.1 is intended for developers, researchers, enterprises, and professional teams that need strong reasoning and coding performance without relying on Anthropic’s most restricted-access model tier.

Description

KAT-Coder represents a cutting-edge AI coding solution that transcends standard autocomplete functionalities by facilitating comprehensive software development processes that involve reasoning, planning, and execution. This system stands as the premier coding model within the KAT ecosystem, specifically tailored for "agentic coding," which allows the model to not only generate code snippets but also to identify problems, suggest solutions, conduct tests, and refine multiple files in a continuous development cycle. It seamlessly integrates into developer environments via API endpoints and proxy layers that are compatible with tools like Claude Code, ensuring that developers can maintain their familiar workflows without needing to alter their interfaces. KAT-Coder employs a sophisticated multi-stage training pipeline that combines supervised fine-tuning with extensive reinforcement learning, which equips it with the ability to grasp programming contexts and tackle intricate tasks effectively. In this way, KAT-Coder not only enhances productivity but also empowers developers to focus more on innovative aspects of their projects.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Claude Yes 
OpenClaw Yes 
Amazon Bedrock Yes 
Anything Yes 
Augment Code Yes 
Claude Code Yes 
Claude Desktop Yes 
Claude Science Yes 
Claw Code Yes 
GitHub Copilot Yes 
GoLand Yes 
OpenClaw.Direct Yes 
PHP Yes 
Pi Agent Yes 
R Yes 
Revise Yes 
Scalestack Yes 
Springhub Yes 
Vellum Yes 
Visual Studio Code Yes 

Integrations

Claude Yes 
OpenClaw Yes 
Amazon Bedrock No 
Anything No 
Augment Code No 
Claude Code No 
Claude Desktop No 
Claude Science No 
Claw Code No 
GitHub Copilot No 
GoLand No 
OpenClaw.Direct No 
PHP No 
Pi Agent No 
R No 
Revise No 
Scalestack No 
Springhub No 
Vellum No 
Visual Studio Code No 

Pricing Details

$10 per 1M tokens (input)
$10 per million input tokens and $50 per million output tokens
Free Trial No 
Free Version No 

Pricing Details

$0.30 per month
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Anthropic

Founded

2021

Country

United States

Website

claude.ai

Vendor Details

Company Name

StreamLake

Country

United States

Website

www.streamlake.ai/product/kat-coder

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