Chat with all AIClaude Fable 5.2
Claude Fable 5.2 is Anthropic's publicly available model from its top Mythos tier, released with additional safeguards. It offers frontier-level depth for research, writing and hard reasoning, and it's available in Chat with all AI's max tier.
Made byAnthropic
GroupHardest problems
SpeedThorough
In Pro30/day
Best for
- Deep research questions
- Long, nuanced writing
- Hard multi-step reasoning
- Second opinion on difficult decisions
Strengths
- Frontier-level depth and nuance
- Strong at synthesizing long material
- Careful, well-structured arguments
- Great for drafting and critiquing complex ideas
Things to keep in mind
- Slowest tier — save it for tasks that deserve it
- Extra safeguards may decline some security or biology topics
- Counts toward the 30/day max-tier allowance on Pro
Prompts to try
Synthesize the arguments on this page into a balanced one-page brief.
Critique my plan: what am I missing, what could fail?
Write a thoughtful essay outline on this topic with sources to check.
Other Claude models
Claude Haiku 5.5 · Claude Sonnet 5.5 · Claude Opus 5.5
Frequently asked questions
Is Claude Fable 5.2 free to try?
Yes. Your 3 free requests work with Claude Fable 5.2. On Pro, Claude Fable 5.2 is part of the most powerful tier with 30 requests a day.
What is Claude Fable 5.2 best at?
Deep research questions, long, nuanced writing, hard multi-step reasoning.
Does Claude Fable 5.2 browse the web here?
No. In Chat with all AI models don't run live web searches. Share the page you're on with This page to ground the answer.
Every top AI model, one side panel
Try GPT-6.1, Claude, Muse and Grok free — 3 requests, no card needed.