Google Ships Gemini Spark, an Always-On Agent That Reads Gmail

*Google's new agentic assistant, built on Gemini and Antigravity harness, begins limited testing this week with direct Gmail access.*

Google announced Gemini Spark at its I/O 2026 developer conference. The system runs as a persistent agent that handles tasks across Gmail without constant user prompts.

The assistant draws from existing Gemini models wrapped in an agentic harness developed by the company's Antigravity team. It operates around the clock and can act inside Gmail inboxes on behalf of users who opt in.

Rollout details

Testing starts this week with a small group of users. Google has not disclosed broader availability dates or pricing.

The announcement gave few technical specifics on how the agent maintains state, avoids hallucinated actions, or secures mailbox data. Sources describe the integration as native rather than through third-party plugins.

Reactions

No third-party developers or competitors have commented on the release yet. Earlier Gemini assistants drew criticism for inconsistent tool use and weak long-running task handling.

Why it matters

Engineers who already route work through Gmail now face a new default option that can read and act on messages without explicit per-task approval. Whether the harness improves reliability over prior agents remains unproven in public tests. The narrow rollout suggests Google is still gathering evidence before wider exposure.

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Sources:

• TechCrunch
• Engadget

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