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anthropic

Claude Fable 5

Models

Context window: 1,000,000 tokens
Maximum output: 128,000 tokens
Open weights: No
Maximum input: 1,000,000 tokens^*

2026-06-09

CoWorkBench · version unreported · reported score · Internal#1^* · 75.90^*Platform unreported

ECI 163.0^*General capability index

* Provisional data