Claude Desktop July 1, 2026 Changelog
What changed in Claude apps (desktop, web & mobile) July 1, 2026, released 2026-07-01 — explained in plain English.
- Access to two creative writing AI models, Fable 5 and Mythos 5, has been restored.
- Workplace admins can now choose exactly which AI models and "effort levels" their employees are allowed to use.
- This update mostly matters to businesses that need to manage how their teams use AI.
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This release is all about giving users and businesses more control over their AI tools. If you're a creative writer, you'll be happy to know two popular models are back. If you're an IT manager at a company, you now have new tools to decide exactly what AI features your team can access.
What's new
- New admin controls for businesses: Administrators on Enterprise (business) plans can now pick and choose which AI models their employees can use. They can also control "effort level" settings, which is a feature that tells the AI how much time and computing power to spend on answering a question. This helps companies manage their costs and keep employees on the same page.
Fixes
- Restored access to Fable 5 and Mythos 5: These two AI models (which are likely used for creative writing and storytelling) were previously turned off or unavailable. Whatever caused them to be blocked has been fixed, and users can use them again.
Breaking changes
No breaking changes in this release.
This is our plain-language summary. Read the complete, official notes on the Claude Desktop official changelog ↗.
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