Fable 5 is live in Adapt

Claude Fable 5, Anthropic's first generally available Mythos-class model, is now one of the models Adapt can run. For the next 60 days, it is free for use for qualified business pilots in Adapt.

Fable 5 is live on Adapt today. When you ask Adapt a question, automate a workflow, or build an internal app, your work can now run on Claude Fable 5, the most capable model Anthropic has released to the public.

Anthropic announced Fable 5 on June 9, 2026 as the first broadly available model in its Mythos class. It posts state of the art results on nearly every benchmark Anthropic tested, and it is built for exactly the kind of long running, autonomous knowledge work that Adapt does every day.

What Fable 5 brings

Fable 5 is a step change in three areas that matter most for how teams use Adapt:

• Software engineering: It handles complex, multi step coding tasks and can run for long stretches without losing the thread, which makes building apps and writing analysis code inside Adapt faster and more reliable.
• Knowledge work: It leads on finance and analytics benchmarks, so questions across your connected tools come back with sharper reasoning and stronger evidence.
• Vision and long context: It reads screenshots, documents, and large amounts of context, and uses persistent memory to stay on track across long tasks.

What it means inside Adapt

Adapt is model agnostic. Every task spins up its own sandbox and routes to the best fit model for the job, so you get the benefit of Fable 5 without changing how you work:

• Ask: Query live data across your connected systems in plain language and get evidence backed answers.
• Automate: Run scheduled reports, recurring workflows, and multi step automations that hold up over long runs.
• Build: Spin up internal apps, dashboards, and tools without engineering resources.

Free for business use for 60 days for qualified pilots

For the next 60 days, Fable 5 is free to use for business workloads on Adapt. It is the simplest way to put the most capable public model to work across your company, in Slack and in the web app, with no setup beyond connecting your tools.

Get started

If you already use Adapt, Fable 5 is available now. You can start started free with $100 credits when you use your business domain. If you'd like to get your business set up on a 60-day pilot with the best intelligence routed to every task, please contact us.