Claude Fable 5.2
The strongest model on the board for problems the others get wrong: first on every independent test read, at twice the list price of Claude Opus 5.5.
Key facts
- Score
- 71 / 100, rank #3Tests100Price19Peoplen/aFit100
- Price
- $8 to read · $40 to write, per 1M tokens (Claude pricing)
- Typical mix
- $16 per 1M tokens (three parts reading to one part writing)
- Reads at once
- 1M tokens (about 750,000 words)
- Where you can get it
- Claude Team and Enterprise, Amazon Bedrock, Gemini Enterprise Agent Platform (Google Cloud), Microsoft Foundry
- Host it yourself
- No
- Released
- Nov 9, 2026
- Best for
- Financial and technical analysis with no room for error, Multi-step research, Work Claude Opus 5.5 gets wrong
Claude Fable 5.2 costs $8 per million tokens it reads (input) and $40 per million tokens it writes (output) on Anthropic's list price (Claude pricing, read Nov 12, 2026). A token is about three-quarters of a word. See what every model costs for the same job.
Independent tests
| Test | Result | Who ran it | Read |
|---|---|---|---|
| Artificial Analysis Intelligence Index (max) | 65 | Artificial Analysis LLM leaderboard | Nov 12, 2026 |
| Humanity's Last Exam, Diamond (Scale) | 72.40 | Scale Labs: Humanity's Last Exam (Diamond) leaderboard | Nov 12, 2026 |
| Humanity's Sixth Sense (Scale) | 59.50 | Scale Labs: Humanity's Sixth Sense leaderboard | Nov 12, 2026 |
| Epoch Capabilities Index | 173 | Epoch AI benchmarking hub | Nov 12, 2026 |
What a job costs
The cost of doing each job 1,000 times on Claude Fable 5.2, worked out from Anthropic’s list price and a fixed size for each job. A product built on the model charges its own price on top.
| 1,000 of these | What one job means | Cost |
|---|---|---|
| Support replies | the customer message, the account notes and two help articles read; a 300-word reply written | $40 |
| Documents processed | a two-page invoice or form read; the fields pulled out | $28 |
| Calls summarised | a 40-minute call transcript read; a summary and next steps written | $104 |
| Contracts reviewed | a 40-page contract read against a checklist; a memo of issues written | $300 |
| Drafts written | a brief and one example read; a 600-word email or proposal section written | $44 |
What people running it say
One Hacker News (developer forum) launch thread, read through Signals: a commenter who tried it says it pulls ahead of Opus 5.5 only on very ambitious requests, another says Opus 5.5 at a high effort setting was enough for a software project of 125,000 lines, and a third asks how anyone measures the difference at the price. Too little to score.
Caveats
- Anthropic's own advice is to start with Opus 5.5 and move up only when its answers fall short.
- It writes more per answer: Artificial Analysis's test run cost $26.54 per task at the top effort setting against $10.04 for Opus 5.5, a wider gap than the list prices suggest.
- On Claude Team it is offered on premium seats, up to half the weekly usage limit; Enterprise bills usage at API rates, per Anthropic's pricing page.
- Mythos 5.2 is the same model without the cyber and biology safeguards, open only through Anthropic's verification programs.
- It ranks third, not first, because price is 30% of the score and this is the second most expensive model here; on independent test results alone it is first.
Questions people ask
How much does Claude Fable 5.2 cost?
Claude Fable 5.2 costs $8 per million tokens it reads (input) and $40 per million tokens it writes (output) on Anthropic's list price (Claude pricing, read Nov 12, 2026). A token is about three-quarters of a word.
What does Claude Fable 5.2 cost for 1,000 support replies?
About $40 at Anthropic's list price, counting one reply as the customer message, the account notes and two help articles read; a 300-word reply written. On the same basis: $28 for 1,000 documents processed, $104 for 1,000 calls summarised, $300 for 1,000 contracts reviewed, $44 for 1,000 drafts written. A product built on Claude Fable 5.2 charges its own price on top.
How good is Claude Fable 5.2?
Claude Fable 5.2 ranks #3 of 33 on the Models at Work leaderboard with a score of 71 out of 100 (November 2026 edition). The strongest model on the board for problems the others get wrong: first on every independent test read, at twice the list price of Claude Opus 5.5.
What is Claude Fable 5.2 best for?
Claude Fable 5.2 is best for financial and technical analysis with no room for error, multi-step research, work claude opus 5.5 gets wrong.
How does Claude Fable 5.2 do on independent tests?
Artificial Analysis Intelligence Index (max): 65 (Artificial Analysis LLM leaderboard); Humanity's Last Exam, Diamond (Scale): 72.40 (Scale Labs: Humanity's Last Exam (Diamond) leaderboard); Humanity's Sixth Sense (Scale): 59.50 (Scale Labs: Humanity's Sixth Sense leaderboard); Epoch Capabilities Index: 173 (Epoch AI benchmarking hub).
How much can Claude Fable 5.2 read at once?
Claude Fable 5.2 can take in 1M tokens (about 750,000 words) in one go, according to Anthropic. Vendors call this the context window.
Where can a business get Claude Fable 5.2?
Claude Fable 5.2 is available through Claude Team and Enterprise, Amazon Bedrock, Gemini Enterprise Agent Platform (Google Cloud), Microsoft Foundry.
Can a company host Claude Fable 5.2 itself?
No. Claude Fable 5.2 is not released for self-hosting; it is available through Anthropic and the products and clouds that carry it.
Compare Claude Fable 5.2
How the score works: Score is 0 to 100 and computed, not typed. 40% is independent testing (Artificial Analysis, Arena, Scale, Epoch, Vals and others; each test is scaled against the best score on this board, and tests of real work, such as finished freelance projects or professional tasks, count double the exams). 30% is price: the vendor's list price for a typical mix of reading and writing, on a fixed scale from $0.05 to $60 per million tokens, so a model that costs a fifth as much gains real ground. 15% is what people report after running it, from Signals and linked threads. 15% is fit: how much text it can take in at once and where a business can get it (the products and clouds that carry it), with a small credit for open weights. A missing component drops out and the rest are reweighted. A model with no independent test yet is provisional and ranks below every measured one. Within three points is a tie. Vendor-published figures are labelled and never counted. Our coverage: read the article.