Milestones
- Project Mariner browser-agent experiment begins11 Dec 2024Complete.
- Auto browse preview on desktop Chrome (US, paid tiers)28 Jan 2026Complete.
- Project Mariner shut down; tech folded into Chrome and Gemini4 May 2026Complete.
- Gemini Spark agent can drive the user's desktop Chrome30 Jul 2026Complete.
- Auto browse on Android phones (US)18 Aug 2026Complete.
- Rollout beyond the US and IndiaNowCurrent milestone.
Most important updates
- Chrome auto browse reaches desktop users in India, its first market outside North America4d ago
- Gemini in Chrome opens to all US Android users; auto browse comes to phones for AI Pro and Ultra subscribers18 Aug 2026
- Gemini Spark agent gains access to the user's desktop Chrome via auto browse and expands to 160 more countries30 Jul 2026
- Google shuts Project Mariner after 17 months and moves its browser-agent technology into Chrome and Gemini Agent4 May 2026
- Google previews Chrome auto browse, a Gemini agent that does multi-step web tasks, for US AI Pro and Ultra users28 Jan 2026

