Claude Fable 5

Claude Fable 5

Anthropic
LTM-1

LTM-1

Magic AI
+
+

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About

Claude Fable 5 is an advanced AI model from Anthropic designed to assist with software engineering, research, knowledge work, vision tasks, and complex reasoning. Built on the Mythos-class architecture, it delivers significantly improved performance across coding, analysis, and long-context workflows. The model can handle extended autonomous tasks while maintaining focus and consistency over large amounts of information. Claude Fable 5 integrates advanced reasoning, multimodal understanding, and memory capabilities to support professional and enterprise use cases. Anthropic has implemented specialized safeguards that automatically route certain high-risk cybersecurity, biology, chemistry, and model distillation requests to a different model. Claude Fable 5 helps organizations and professionals accelerate complex work while maintaining strong safety and governance controls.

About

Magic’s LTM-1 enables 50x larger context windows than transformers. Magic's trained a Large Language Model (LLM) that’s able to take in the gigantic amounts of context when generating suggestions. For our coding assistant, this means Magic can now see your entire repository of code. Larger context windows can allow AI models to reference more explicit, factual information and their own action history. We hope to be able to utilize this research to improve reliability and coherence.

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

Claude Fable 5 is designed for software engineers, researchers, enterprise organizations, data analysts, scientists, product teams, developers, business professionals, knowledge workers, and organizations seeking advanced AI for coding, research, automation, analysis, and enterprise productivity

Audience

Developers interested in a 5 million token context window large language model

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

$10 per 1 million (input)
$10 per million input tokens and $50 per million output tokens
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

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

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:

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Pros & Cons from Real Users

Pros

  • Claude Fable 5 is the most capable coding model I've used for complex software development. It understands large codebases remarkably well and can maintain context across long implementation sessions without losing track of requirements. The model excels at architecture discussions, debugging difficult issues, and generating production-quality code. Its reasoning feels more deliberate than many competing models, making it especially valuable for backend development, refactoring, and technical design work. I was particularly impressed by its ability to handle multi-step engineering tasks. Instead of solving problems one prompt at a time, it often anticipates edge cases and implementation details before I ask.

Cons

  • The safety guardrails can occasionally get in the way of legitimate security-related development work. Certain cybersecurity topics may be redirected to a less capable model, which can interrupt advanced technical workflows. Pricing is also higher than previous Claude models, which may be a consideration for teams with heavy API usage. Like any AI coding assistant, it still requires careful review of generated code before deployment, especially for critical production systems.

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

Magic AI
Founded: 2022
United States
magic.dev/blog/ltm-1

Alternatives

Alternatives

LTM-2-mini

LTM-2-mini

Magic AI
MiniMax M3

MiniMax M3

MiniMax
GPT-5.6 Sol

GPT-5.6 Sol

OpenAI
Inkling

Inkling

Thinking Machines Lab
Claude Mythos 5

Claude Mythos 5

Anthropic
GPT-5.4

GPT-5.4

OpenAI
Claude Opus 5

Claude Opus 5

Anthropic
Claude Opus 4.6

Claude Opus 4.6

Anthropic

Categories

Categories

Integrations

AiAssistWorks
Amazon Bedrock
Anything
App0
Biela.dev
C#
Claude
Cody
Cursor
Devin
Kotlin
Muse
OpenClaw
Quickwork
ReSharper
Rider
Shipper.now
Skymel
Solidity
Sup AI

Integrations

AiAssistWorks
Amazon Bedrock
Anything
App0
Biela.dev
C#
Claude
Cody
Cursor
Devin
Kotlin
Muse
OpenClaw
Quickwork
ReSharper
Rider
Shipper.now
Skymel
Solidity
Sup AI
Claim Claude Fable 5 and update features and information
Claim Claude Fable 5 and update features and information
Claim LTM-1 and update features and information
Claim LTM-1 and update features and information