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Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) vs GLM 5.2

A metric-by-metric comparison using the latest available benchmark, runtime, and pricing values. Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) wins more comparable metrics.

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Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback): 2
GLM 5.2: 0
Ties: 0
Metrics compared: 12

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Metric	Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)	GLM 5.2
Artificial Analysis Intelligence Index	59.9	51.1
Artificial Analysis Coding Index	76.5	68.8
LiveBench Mathematics	96%	n/a
GPQA	92.6%	n/a
Humanity's Last Exam	53.3%	n/a
SciCode	60.2%	n/a
Output Speed	70.4 tok/s	n/a
Time to First Token	58.28 s	n/a
Blended Price	$20.00 / 1M	n/a
Input Price	$10.00 / 1M	n/a
Output Price	$50.00 / 1M

Data & Evidence

Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)

Anthropic

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GLM 5.2

Zai

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