Releasesby GlyphFast mode removed for Claude Opus 4.7
Requests to claude-opus-4-7 with speed fast now return an error rather than falling back to standard speed. The model stays available at standard speed; migrate to Opus 5 or Opus 4.8 to keep fast mode.
Claude Opus 5 launched
Anthropic launched Claude Opus 5, which it says comes close to the frontier intelligence of Claude Fable 5 at half the price.
Claude Managed Agents agent updates no longer require a version field
Supply version for optimistic concurrency, where a mismatch returns 409, or omit it to apply the update unconditionally.
Claude experimental prompt tools APIs retire with the Workbench on August 17, 2026
The generate_prompt, improve_prompt and templatize_prompt experimental endpoints are being retired along with the Workbench on August 17, 2026, after which requests will return an error.
Mid-conversation system messages available on Claude Fable 5, Mythos 5 and Opus 4.8
Mid-conversation system messages work on Claude Fable 5, Mythos 5 and Opus 4.8 on the Claude API, Amazon Bedrock and Google Cloud with no beta header required, correcting earlier availability notes.
Admin API adds Claude Enterprise user management in beta
Claude Enterprise organizations can list and look up members, change roles, remove members, manage invites and groups, and read custom roles through the Admin API. Group and custom-role requests need the ce-user-management-2026-07-13 beta header.
Dreams research preview adds Claude Fable 5 and Claude Sonnet 5
Dreams, in research preview, now supports Claude Fable 5 and Claude Sonnet 5.
Memory reworked into individual categorized entries
Memory on Claude now works as a set of individual, categorized entries that Claude reads and updates during conversations, replacing the previous daily memory summary.
Monthly recap in Settings > Reflect (beta), plus break reminders and quiet hours
A monthly recap at Settings > Reflect shows topics, most active day, peak hour, and observations; it is in beta on Free, Pro, and Max plans on web and Desktop. Settings > Time and focus adds optional break reminders and quiet hours.
Claude Console API keys and Admin API keys can now expire
Choose a preset, custom duration or Never when creating a key, and keys with a lifetime of at least 7 days trigger an email before expiry. The Admin API reports expiration in expires_at; existing keys are unaffected.
Claude Cowork available on web and mobile, with remote sessions in beta
Claude Cowork is now available on web and mobile in addition to desktop, rolling out starting with the Max plan. Cowork runs sessions remotely (in beta), so sessions and files are saved to the Claude account and scheduled tasks run with no device online.
agent-memory-2026-07-22 beta header changes memory store listing behavior
With the new header, listing memories returns a stable server-defined order, depth accepts only 0 or 1, and path_prefix must end with / and match whole segments. Page cursors issued without the header are not valid with it.
Model entitlements for Enterprise plans (beta)
Admins on Enterprise plans can now control which models their users can access and which effort level settings they can use.
Access to Claude Fable 5 and Claude Mythos 5 is restored
Anthropic has restored access to Claude Fable 5 and Claude Mythos 5 and published a statement with more information.