# Fable Bold

Canonical: https://brew.new/browse/templates/email/pt1_k97gh1r6cey1acns5geyvjqsdx8bm3ss

Brand: claude.com
Category: product-launch

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## Email content

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 →

Claude logo

Think fast, build faster.

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Anthropic PBC · San Francisco, CA

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