Claude Fable 5.2 is Anthropic's most capable model for hard technical work, released on November 9, 2026. It is available on all paid Claude plans, but not on Free. On Max and Ultra it is part of the plan, up to 50% of your weekly usage. On Pro, it normally runs on paid usage credits, but a launch offer includes it in your plan until November 16, 2026 at 11:59 pm PT (8:59 am on November 17 in Paris and Morocco). For most everyday work, Anthropic still recommends Opus 5.5. Details below come from Anthropic's announcement and help center, checked on November 10, 2026.
The short answer
- Free plan: no Fable models
- Pro: Fable included until Nov 16, up to 50% of your weekly limit, plus one free Fable reset. From Nov 17: usage credits only
- Max and Ultra: Fable included all the time (up to 50% of weekly usage), plus 1 to 3 free Fable resets
- How to use it: pick Fable 5.2 in the model picker. Your default model does not change
- Best for: big, hard tasks (complex code, long projects). For writing, emails and normal questions, Opus 5.5 is enough
What Is Claude Fable 5.2?
Fable 5.2 is the new version of Claude Fable, Anthropic's "Mythos-class" model for the most difficult technical work: complex software, long-running projects, science and data work. It replaces Fable 5.1.
What Anthropic says is new:
- Faster: answers come up to 30% faster than Fable 5.1
- Better at coding, reasoning and vision, with big gains on Anthropic's coding benchmarks
- Fewer blocked requests: about 55% fewer blocks than Fable 5.1 (Fable has extra safeguards for cybersecurity and biology)
- Cheaper on the API: $8 per million input tokens and $40 per million output tokens
Its sister model, Claude Mythos 5.2, is the same model without some of those safeguards. It is not open to the public: only vetted security and life-science organizations can use it.
Which Claude Plans Include Fable 5.2?
| Plan | Price (US) | Fable 5.2 normally | Launch offer (Nov 9-16) |
|---|---|---|---|
| Free | $0 | Not available | Not included |
| Pro | $20/month ($200/year) | Paid usage credits from the first message | Included, up to 50% of weekly limit + 1 free Fable reset |
| Max | $100/month | Included, up to 50% of weekly limit | 1 to 3 free Fable resets |
| Ultra | $200/month | Included, up to 50% of weekly limit | 1 to 3 free Fable resets |
| Team (standard seat) | per seat | Usage credits | Same as Pro |
| Team (premium seat) | per seat | Included, up to 50% of weekly limit | 1 to 3 free Fable resets |
Important: the 50% is not extra usage. It is a cap inside your normal weekly limit, and Fable uses your limits faster than other Claude models.
How to Use Fable 5.2 for Free on Pro (Until November 16)
- Check you qualify: your paid Pro billing must have started before November 9, 2026 at 10:00 am PT
- Open Claude on the web, desktop app or phone app
- Pick "Fable 5.2" in the model picker (under the message box). Your default model stays the same, so pick it again in each new chat
- Watch your usage in Settings > Usage. Fable can use up to half of your weekly limit this week
- Use your free reset when you run low: in Settings > Usage, under Limit resets, click Reset for free. It gives back the usage you spent on Fable and refills your five-hour window
After November 16: Fable goes back to running on usage credits on Pro. Any unused part of the 50% and an unused reset are lost, so do not save them for later.
In Claude Code: you need version 2.1.321 or later. Type /model and choose Fable. On Pro after the offer, Claude Code shows "Requires usage credits", so don't leave Fable as your default model in scripts.
Max and Ultra: Your Free Fable Resets
Max, Ultra and premium Team seats get free Fable limit resets based on how long you have been a paying subscriber:
| Subscription length | Free Fable resets |
|---|---|
| Less than 6 months | 1 |
| 6 to 12 months | 2 |
| More than 12 months | 3 |
These resets expire on March 8, 2027, so you can keep them for a big project. Find them in Settings > Usage > Limit resets. A reset gives back usage you already spent. It does not raise your limits.
Fable 5.2 vs Opus 5.5: Which Should You Use?
Anthropic calls Opus 5.5 its "strongest daily driver" and recommends starting there for most coding and knowledge work. Move up to Fable for the hardest jobs.
| You want to... | Use |
|---|---|
| Write emails, posts, articles, captions | Opus 5.5 (or Sonnet 5.5) |
| Ask questions, summarize, brainstorm | Opus 5.5 (or Sonnet 5.5) |
| Fix a small code error or WordPress problem | Opus 5.5 |
| Build a full app or website from a long brief | Fable 5.2 |
| Fix a hard bug across a big codebase | Fable 5.2 |
| Long, multi-step technical projects | Fable 5.2 |
| Cybersecurity testing or lab biology | Neither: Fable blocks most of it and passes it to an older model |
Anthropic's own numbers back this up. On FrontierSWE v2 (software engineering), Fable 5.2 scores 69.9% vs 62.3% for Opus 5.5. But on AA-Briefcase, a test of everyday work tasks, Opus 5.5 has the higher Elo score (1800 vs 1785). In short: Fable is better at hard engineering, not at everything.
5 Ways to Use Your Free Fable Week Well
Fable uses your limits fast, so give it one big job instead of many small ones. Copy one of these prompts:
Build a complete one-page website for [your business]: a hero section, services, prices, a FAQ and a contact form. Use clean HTML, CSS and a little JavaScript in one file. Make it fast, mobile-friendly and accessible. Explain how to put it online.Here is my code and the error message. Find the real cause, not only the symptom. Explain it simply, then give me the fixed files and a test to make sure it does not come back.
[paste code + error]Plan an n8n workflow that [goal, e.g. saves every new form answer to Google Sheets and sends me a summary email]. List each node, its settings, and what to test. Point out what can break.Review this spreadsheet data. Find errors, duplicates and odd values, then build the formulas or a short Python script to clean it. Explain each step.
[attach the file]I want to build [app idea]. Write the full plan: features for version 1, the tech stack, the file structure and the first files, step by step. Ask me up to 5 questions first if anything is unclear.Tip: do your planning and writing with Opus 5.5, then switch to Fable 5.2 only for the hard part. Put the work in a Project so Fable gets all the context in one go.
For Developers: API Price and Fast Mode
| Input (per million tokens) | Output (per million tokens) | |
|---|---|---|
| Fable 5.2 standard | $8 | $40 |
| Fable 5.2 fast mode | $16 | $80 |
- Model ID:
claude-fable-5-2 - Where: the Claude Platform, Amazon Web Services, Google Cloud and Microsoft Azure
- Fast mode: up to 2.5x faster output, at twice the price. Available in Claude Code, the Claude Platform, Google Cloud and Microsoft Foundry
- Effort levels: Low, Medium (the default), High, Xhigh and Max. Anthropic says Fable 5.2 at High effort matches Opus 5.5 on FrontierCode 2.0 at about half the cost per task
Frequently Asked Questions
Is Claude Fable 5.2 free?
Not on the Free plan. On Pro and standard Team seats, Fable 5.2 is included at no extra cost until November 16, 2026 at 11:59 pm PT, up to 50% of the weekly usage limit. After that it runs on paid usage credits. On Max and Ultra it is part of the plan.
How do I use Fable 5.2 in Claude?
Open Claude on the web, desktop or phone and choose "Fable 5.2" in the model picker. Your default model does not change, so select it in each chat. In Claude Code, you need version 2.1.321 or later.
What happens to Fable 5.2 on Pro after November 16?
Fable goes back to running on usage credits and no longer uses your weekly plan limit. Any unused part of the 50% allowance and any unused Pro reset expire at the end of the offer.
What is a Fable limit reset?
A reset gives back the weekly usage you already spent on Fable models and refills your five-hour window. It does not raise your limits. Use it in Settings > Usage under Limit resets.
Is Fable 5.2 better than Opus 5.5?
For the hardest technical work, yes: it scores higher on Anthropic's coding benchmarks. For everyday tasks, Anthropic recommends Opus 5.5, which uses your limits more slowly and scored slightly higher on an everyday work benchmark.
How much does Fable 5.2 cost on the API?
$8 per million input tokens and $40 per million output tokens. Fast mode costs $16 and $80, and makes output up to 2.5 times faster. The model ID is claude-fable-5-2.
Can I use Claude Mythos 5.2?
Only if you work for an organization approved through Anthropic's Cyber Verification or Life Sciences Verification programs, or through Claude Security on Claude Enterprise. It is not available to the public.
