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← Back to all updatesPublished ·Anthropic• Minor
Anthropic made both toolsets available for listed Claude Fable, Mythos, Opus, and Sonnet models on the Claude API.
The read
The important part is parity. The same toolsets apply across the listed Claude API models.
The frame
For Claude API builds, toolset wiring can stay consistent across Fable, Mythos, Opus, and Sonnet choices.
Primary source
Anthropic →Keep reading
See what Nova3 builds →Related updates
- Aug 21, 2026Plus and Pro Site owners can change a ChatGPT-hosted URL without redeploying.
- Aug 21, 2026Anthropic made the computer use tool generally available on Claude API without a beta header.
- Aug 21, 2026Anthropic launched browser use tool, a client toolset for driving an application-hosted browser viewport.
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