Claude Fable 5.2

Claude Fable 5.2

Anthropic
5.0 out of 5 stars
Seed2.1 Pro

Seed2.1 Pro

ByteDance
+
+

Related Products

  • Gemini Enterprise Agent Platform
    4.3 out of 5 stars 1,178 Ratings
    Visit Website for Gemini Enterprise Agent Platform
  • LTX
    4.4 out of 5 stars 182 Ratings
    Visit Website for LTX
  • Google AI Studio
    4.8 out of 5 stars 42 Ratings
    Visit Website for Google AI Studio
  • Evertune
    5.0 out of 5 stars 1 Rating
    Visit Website for Evertune
  • Jotform
    4.6 out of 5 stars 9,009 Ratings
    Visit Website for Jotform
  • LM-Kit.NET
    4.8 out of 5 stars 29 Ratings
    Visit Website for LM-Kit.NET
  • Concord
    4.6 out of 5 stars 237 Ratings
    Visit Website for Concord
  • SearchUnify
    4.5 out of 5 stars 150 Ratings
    Visit Website for SearchUnify
  • Canditech
    5.0 out of 5 stars 111 Ratings
    Visit Website for Canditech
  • Checksum.ai
    5.0 out of 5 stars 2 Ratings
    Visit Website for Checksum.ai

About

Claude Fable 5.2 is an advanced AI reasoning model developed by Anthropic for complex software engineering, scientific research, technical problem-solving, and autonomous agent workflows. The model provides improvements in coding, mathematical reasoning, visual understanding, and long-running task execution compared with previous Claude Fable models. Its agentic capabilities allow AI systems to analyze large codebases, coordinate multiple subagents, develop software, investigate technical problems, and automate complex business processes. Claude Fable 5.2 generates outputs up to 30% faster than Fable 5.1 and offers an optional fast mode that increases generation speed by up to 2.5 times. The model includes configurable reasoning effort, advanced tool use, and specialized cybersecurity and biology safeguards designed to reduce misuse while supporting general technical work.

About

Seed2.1 Pro is a next-generation AI productivity model built to handle complex, real-world work across general agents, code engineering, and multimodal understanding. It reliably executes multi-step tasks for high-value office work and everyday consultation, including project planning, file processing, research, tool use, spreadsheet analysis, lesson-plan slide generation, and industry report creation across tools and environments. In software development workflows, Seed2.1 Pro strengthens end-to-end delivery by improving requirement understanding, architecture design, coding, debugging, implementation, and validation. Its agent capabilities are designed to make steady progress on difficult tasks and return practical, verifiable results rather than isolated responses. The model also advances knowledge, reasoning, visual understanding, spatial reasoning, and long-context processing, giving agents a stronger foundation for complex decision-making and execution.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software engineers, AI developers, machine learning researchers, autonomous agent developers, scientific researchers, mathematicians, data scientists, robotics engineers, hardware designers, DevOps professionals, enterprise technology teams, and organizations seeking frontier AI reasoning, autonomous software engineering, complex research automation, advanced coding, technical analysis, and multi-agent workflow orchestration

Audience

AI teams seeking a multimodal agent model for complex productivity, coding, reasoning, tool use, and long-horizon tasks

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$8 per 1M tokens (input)
$8 per million input tokens and $40 per million output tokens
Free Version Not Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 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:

Review this Software

Pros & Cons from Real Users

Pros

  • Fable 5.2 feels like the model I reach for when I have something genuinely difficult and do not want to babysit it the whole way through. The biggest upgrade for me is how well it handles ambiguous, long-running work. I can give it a messy engineering task or a loose idea and it does a much better job figuring out the path, delegating pieces, correcting itself, and actually getting to the finish line.

Cons

  • My only complaint is that this is still a model I would save for the hard stuff. Anthropic itself recommends starting with Opus 5.5 for normal coding and knowledge work, then stepping up to Fable when the task really justifies it.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

ByteDance
Founded: 2012
China
seed.bytedance.com/en/seed2_1

Alternatives

Alternatives

GPT-6.1 Terra

GPT-6.1 Terra

OpenAI
5.0 out of 5 stars
GPT-6.1 Terra

GPT-6.1 Terra

OpenAI
5.0 out of 5 stars
GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
5.0 out of 5 stars
GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
5.0 out of 5 stars
Claude Fable 5.1

Claude Fable 5.1

Anthropic
5.0 out of 5 stars
Seed2.1 Turbo

Seed2.1 Turbo

ByteDance
Claude Fable 5

Claude Fable 5

Anthropic
5.0 out of 5 stars
Kimi K2.6

Kimi K2.6

Moonshot AI

Categories

AI Coding Models Supported
AI Models Supported
AI Vision Models Supported
Foundation Models Supported
Multimodal Models Supported

Categories

AI Coding Models Supported
AI Models Supported
AI Vision Models Supported
Foundation Models Supported
Multimodal Models Supported

Integrations

Claw Code Supported
Hermes Agent Supported
OpenClaw Supported
BLACKBOX AI Supported
C# Supported
Claude Desktop Supported
Claude Science Supported
DataGrip Supported
Doubao Not Supported
Factory Droid Supported
GitAuto Supported
HTML Supported
IntelliJ IDEA Supported
Java Supported
OpenRouter Not Supported
Perplexity Pro Supported
Replit Supported
Shiori Supported
Shipper.now Supported
Skymel Supported

Integrations

Claw Code Supported
Hermes Agent Supported
OpenClaw Supported
BLACKBOX AI Not Supported
C# Not Supported
Claude Desktop Not Supported
Claude Science Not Supported
DataGrip Not Supported
Doubao Supported
Factory Droid Not Supported
GitAuto Not Supported
HTML Not Supported
IntelliJ IDEA Not Supported
Java Not Supported
OpenRouter Supported
Perplexity Pro Not Supported
Replit Not Supported
Shiori Not Supported
Shipper.now Not Supported
Skymel Not Supported
Claim Claude Fable 5.2 and update features and information
Claim Claude Fable 5.2 and update features and information
Claim Seed2.1 Pro and update features and information
Claim Seed2.1 Pro and update features and information