AA Intelligence Index v4.3. Source median output speed. Test configuration is not reported by the Free API; throughput is not response latency. Source captured 2026-10-18T06:15:17.223Z. Historical values are preserved separately.

Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback)

Provider: Anthropic

General intelligence index

46.8

Output throughput (tokens/second)

59.89

Input USD per million tokens

10

Output USD per million tokens

50

Combined context tokens

1000000

Context evidence

Anthropic model documentation · View source

Maximum input tokens

Unavailable

Maximum output tokens

128000

Output throughput is not time to first token. A listed zero rate is not proof of a free offer.

Data provided by artificialanalysis.ai. Context limits: the source attached to each model. General model measurements do not establish healthcare or legal suitability.