Anthropic cuts Fable 5.1 cache-read prices 75% for long-running agents
Input remains $10 and output $50 per million tokens, while Anthropic estimates the cache discount can lower highly agentic workload costs by roughly 45%.
By RuntimeWire Staff · Published
Primary source: Forbes
Why it matters
Persistent agents can reread the same instructions, repository state and documents across many turns. Fable 5.1's lower cache-read rate can reduce those bills substantially, but the result depends on cache reuse, prompt structure, output volume and how many turns the model needs to finish a task.
Anthropic released Claude Fable 5.1 and cut its cached-context read price from $1 to $0.25 per million tokens on September 1st, a 75% reduction, while keeping input at $10 and output at $50 per million tokens.…
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