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claude.com · product-launch
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Claude
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Introducing Claude Fable 5
The next generation of intelligence.
Fable 5 is our fifth-generation and most capable
widely released model — built for the hardest
knowledge work and coding problems. It reasons
over longer horizons, runs complex tasks for days,
and keeps safety built in.
Try Claude
01 · AGENTIC WORK
Days-long, asynchronous tasks
Hand off complex, multi-step work and let Fable 5
run with it — coordinating tools, recovering from
setbacks, and pushing toward a finished result
over hours or days, not minutes.
Claude Code terminal running a multi-step agentic task
02 · REASONING
Long-horizon problem solving
Fable 5 holds context across sprawling problems —
weighing signals, planning ahead, and staying
coherent through the kind of deep analysis the
hardest knowledge work demands.
Structured reasoning across a complex prioritization workspace
03 · SAFETY
Safety classifiers built in
More capability means more responsibility. Fable 5
ships with classifiers built into the model —
guarding sensitive work and keeping autonomous
tasks within the bounds you set.
Built-in safety guarding sensitive work
Put Fable 5 to work.
Start in the app, or build with our most capable
model through the API.
Try Claude
Get API access →
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Think fast, build faster.
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