Claude voice mode gets Opus/Sonnet, acts on Gmail, Slack, Notion
The upgrade turns talking into real work; alongside it, Anthropic's agent API adds one-call sessions and sets an Aug 17 sunset for its old prompt tools.
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Voice mode drops Haiku-only, drives your apps
Claude voice mode now runs on Opus, Sonnet, or Haiku and can act across Gmail, Google Calendar, Slack, Canva, and Notion — draft an email or spin up a Notion doc by talking. It's in beta on every platform in 10 languages; free users stay on Haiku with a single connected app.
Agent sessions now start in one call
Anthropic's Managed Agents API lets you seed a new session with up to 50 initial events on POST /v1/sessions, firing the agent loop without a second request. You can also set an effort level in the model config and subscribe to new environment.* and memory_store.* webhooks to stop polling.
Old prompt-tool APIs die Aug 17
The legacy Workbench and the experimental generate_prompt, improve_prompt, and templatize_prompt endpoints retire on August 17, 2026; calls after that return errors. If any script leans on those routes, migrate before the cutoff.