ThinkOS
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ThinkOS Public Beta

ThinkOS 0.0.253

This macOS alpha release brings Sphere-first navigation, a shared browser for you and your agents, improved voice conversations, and more reliable collaboration and companion sync.

Download for macOS — Apple silicon

Downloads

iPhone and iPad through TestFlight

  • ThinkOS has completed Apple's TestFlight review and is approved for public testing. We're distributing the iOS app through TestFlight for now because we're making rapid changes and want to deliver fixes and improvements quickly before the full App Store release.
  • Install Apple's free TestFlight app on your iPhone or iPad if you do not already have it, then open the ThinkOS public TestFlight link on that device and tap Accept or Install.
  • New ThinkOS builds appear in TestFlight as they are released. You can update manually or enable automatic updates in TestFlight. Expect frequent changes, occasional rough edges, and features that may move while the early release develops.
  • TestFlight builds are available for up to 90 days. We plan to keep a current build available, but if a build expires, return to TestFlight for the newest one.
  • Feedback is part of this early release: send notes from TestFlight, including screenshot feedback when useful, so we can reproduce issues and improve the next build.

Highlights

  • Navigate nested Spheres and their threads from Home, and track thread to-dos and FYIs in Feed.
  • Browse alongside your agent with conversation-specific tabs, a detachable browser window, and page annotations you can send into chat.
  • Chief of Staff is now called Chief Think Agent, with editable names and avatars.

Desktop

  • Dictate prompts and start Grok live voice from the composer, with saved transcripts and words paced to reply audio.
  • Queue follow-up messages or steer an active chat turn without waiting for it to finish.
  • Use Auto model routing and retain each task's saved model after restarting.
  • Search Space conversations and use replies and reactions in shared discussions.

Companion Sync

  • Paired conversations receive messages and activity updates faster, with more reliable delivery after interruptions.
  • Pairing codes and connection status stay clearer during setup, and paired device removal controls are restored.
  • Space read state follows you across devices.

Reliability

  • Shared invitations and member changes recover more reliably after interrupted delivery or reconnects.
  • Conversation updates better preserve your scroll position, open thread, and conflict drafts.
  • ThinkOS stays more responsive while loading saved history and catching up on Slack activity.
  • Account-only features now offer clear Sign in and Create account actions when signed out.

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