PodcastIntelligence Snacks · Weekly conversations about AI, software and business, from the team behind Normie Mode.Listen →
Models · Anthropic

Claude Fable 5.1

Anthropic's Claude model, released 1 Sept 2026.

Top three for

14 tasks, including business, maths and science, legal questions.

Evidence

Independently tested. 25 independent results so far.

Cost

$55 per 1,000 typical requests, if you use it directly.

Reads at once

1,500 pages of about 500 words.

Where you can use it

The apps and plans that include it, cheapest first.

App and planPriceAccess
Claude Pro$20/month
$17 a month if paid yearly
Costs extra
Costs extra, on top of the plan
Claude Max$100/month
From $100 a month; a $200 tier has four times the usage
Limited
For up to half your weekly allowance

Where it ranks, task by task

Its place on each task's score, among the models we compare that have enough results to score.

TaskPositionTask score
Best AI for business1st of 894
Best AI for maths and science1st of 1296
Best AI for legal questions1st of 8100
Best AI for coding and building apps1st of 1083
Best AI for documents, PDFs and notes1st of 1393
Best AI for accounting and finance1st of 894
Best AI for Excel and spreadsheets1st of 8100
Best AI for presentations and PowerPoint1st of 890
Best AI for studying and homework2nd of 1289
Best AI for translation and languages2nd of 1497
Best AI for writing2nd of 1483
Best AI for health questions2nd of 1498
Best AI for CVs, job applications and interviews2nd of 1484
Best AI for planning and personal admin3rd of 1475
Best AI for research5th of 1162

Test results

Every test we use that has a result for this exact version.

TestResultPosition
People's votes on legal questions
LMArena
rating 15141st of 14
People's votes on health questions
LMArena
rating 15181st of 13
Pulling information out of documents into tables
DTBench authors
98%1st of 13
Competition maths
Epoch AI
100%1st of 12
Professional tasks in banking, consulting and law
Mercor
69%1st of 8
People's votes on business and finance questions
LMArena
rating 14932nd of 14
People's votes on coding questions
LMArena
rating 15232nd of 14
People's votes on creative writing
LMArena
rating 15072nd of 14
People's votes on following instructions
LMArena
rating 15152nd of 14
People's votes on long, detailed requests
LMArena
rating 15242nd of 14
People's votes on questions in other languages
LMArena
rating 15092nd of 14
People's votes overall
LMArena
rating 15112nd of 14
People's votes on science questions
LMArena
rating 15342nd of 14
People's votes on writing and language
LMArena
rating 15122nd of 14
People's votes on maths questions
LMArena
rating 15192nd of 13
Research-level maths
Epoch AI
90%2nd of 11
People's votes on back-and-forth conversations
LMArena
rating 14923rd of 14
People's votes on expert questions
LMArena
rating 15283rd of 14
Would a real maintainer accept its code?
Cognition
51%2nd of 9
Answering short factual questions correctly
Google DeepMind
71%3rd of 11
Humanity's Last Exam
Center for AI Safety, Scale AI
47%2nd of 4
Real paid freelance projects
Scale AI, Center for AI Safety
18%2nd of 2

Details

Maker
Anthropic
Released
1 Sept 2026
Status
Current
Replaces
Claude Fable 5
Name checked
Confirmed with Anthropic
Intelligence Snacks newsletter

The big AI ideas each week, in your inbox