Claude Fable 5.2

Claude Fable 5.2

Anthropic
5.0 out of 5 stars
MiMo-V2.6-Pro

MiMo-V2.6-Pro

Xiaomi Technology
5.0 out of 5 stars
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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

MiMo-V2.6-Pro is Xiaomi MiMo’s most capable open-source omnimodal AI model, built for coding, general agent workflows, visual tasks, research, and multimodal creation. The model combines strong software engineering capabilities with computer use, 3D spatial reasoning, visual perception, and tool use for complex multi-step work. MiMo-V2.6-Pro can build interactive 3D environments, generate Blender models, create frontend interfaces and presentations, and coordinate agents to refine outputs through visual feedback. It also supports research workflows such as literature review, computational experimentation, materials discovery, and formal mathematical proof development. Xiaomi trained the model with large-scale reinforcement learning across coding, general agents, visual tasks, and cybersecurity environments and has open-sourced the technical report, training environments, and RL code.

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 developers, software engineers, researchers, agent builders, designers, technical teams, and organizations that need an open-source multimodal model for coding, automation, visual creation, research, and complex tool-using workflows

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

Free
$0.435 per 1 million tokens input
$0.87 per 1 million tokens output
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5

Reviews/Ratings

Overall 5.0 / 5
features 5.0 / 5

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.

Pros & Cons from Real Users

Pros

  • What impressed me most is how comfortable it feels with really large, messy tasks. The 1M-token context window is genuinely useful when I am working across a big repo, long documentation, research material, or an agent session with a lot of tool history. The multimodal support is another big win. Being able to feed it text, screenshots, video, and audio makes it useful for much more than coding alone. Xiaomi is clearly aiming for a model that can sit at the center of a full agent workflow instead of just answering prompts. I also like the pricing a lot. Xiaomi lists API pricing at $0.435 per million uncached input tokens and $0.87 per million output tokens, which is extremely aggressive for a model in this capability tier.

Cons

  • The main downside is that it can be more model than I need for simple tasks. For quick edits or lightweight automation, I would probably use MiMo-V2.6-Flash instead and save Pro for the harder work.

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

Xiaomi Technology
Founded: 2010
China
mimo.xiaomi.com

Alternatives

Alternatives

Claude Fable 5.2

Claude Fable 5.2

Anthropic
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 Terra

GPT-6.1 Terra

OpenAI
5.0 out of 5 stars
Claude Fable 5.1

Claude Fable 5.1

Anthropic
5.0 out of 5 stars
MiMo-V2.6-Flash

MiMo-V2.6-Flash

Xiaomi Technology
5.0 out of 5 stars
Claude Fable 5

Claude Fable 5

Anthropic
5.0 out of 5 stars
MiMo-V2.6-Pro-UltraSpeed

MiMo-V2.6-Pro-UltraSpeed

Xiaomi Technology

Categories

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

Categories

Integrations

BLACKBOX AI Supported
Hermes Agent Supported
OpenClaw Supported
OpenCode Supported
Shiori Supported
Vercel AI Gateway Supported
.NET Supported
AgentSea Supported
Claude Security Supported
DataGrip Supported
Devin Supported
Elixir Supported
Gemini Enterprise Agent Platform Supported
JetBrains Junie Supported
Lua Supported
Node.js Supported
PhpStorm Supported
PyCharm Supported
Scalestack Supported
Sup AI Supported

Integrations

BLACKBOX AI Supported
Hermes Agent Supported
OpenClaw Supported
OpenCode Supported
Shiori Supported
Vercel AI Gateway Supported
.NET Not Supported
AgentSea Not Supported
Claude Security Not Supported
DataGrip Not Supported
Devin Not Supported
Elixir Not Supported
Gemini Enterprise Agent Platform Not Supported
JetBrains Junie Not Supported
Lua Not Supported
Node.js Not Supported
PhpStorm Not Supported
PyCharm Not Supported
Scalestack Not Supported
Sup AI Not Supported
Claim Claude Fable 5.2 and update features and information
Claim Claude Fable 5.2 and update features and information
Claim MiMo-V2.6-Pro and update features and information
Claim MiMo-V2.6-Pro and update features and information