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#85

Claude Fable 5.2

Anthropic Release: 2026-11-09 Tested on: 2026-11-10 00:33 anthropic/claude-fable-5.2::high
~9.5T total (~878B active)MoEClosedEstimated
(xhigh) (high) (medium) (low)

Summary

Claude Fable 5.2 scores 8.7 on AI BENCHY and ranks #85. It has 9.6 reliability, a 87.0% pass rate, $5.083 total cost, and 14.73s average response time.

What makes Claude Fable 5.2 unique: It stands out most in Domain specific, where it ranks #1, while Coding is its weakest area at #15.

Model facts

Researched on 2026-11-09

Estimated
Parameters
~9.5T total (~878B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. API-only exact checkpoint (claude-fable-5-2). Anthropic does not disclose parameter counts or architecture; the low-confidence estimates follow the Claude Fable 5.1 family record.

Parameter source Availability source

Score

8.7

Consistency

9.3

Reliability

9.6

Total Cost (Current Price)

$5.083

Total Output Tokens

63,226

Total Input Tokens

319,219

Input Price

$8.000 / 1M

Output Price

$40.000 / 1M

Cache Read Price

$0.200 / 1M

Cache Write Price

$10.000 / 1M

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 4

Attempt pass rate: 87.0%

Flaky tests

2

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

14.73s

Response Time (max): 84.72s

Response Time (total): 338.82s

Wrong answer: 4

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#85 Claude Fable 5.2

high
Cost
$0.701
Time
204.4s
Tokens
17,664 tok

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 10.0 10.0
Coding 6.0 7.4
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 7.7 10.0
General Intelligence 10.0 10.0
Instructions following 10.0 10.0
Puzzle Solving 10.0 10.0
Tool Calling 10.0 10.0
Trivia 2.8 1.6

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