Antigravity IDE consuming Anthropic/Claude API quota automatically while using Gemini models

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Antigravity is automatically consuming Anthropic Claude quota even when exclusively using Gemini models. I am not making any Claude requests, yet my Claude quota decreases just by having Antigravity open. Using Gemini models should not trigger any Anthropic API calls or consume Claude quota.

Antigravity IDE (Windows 11)
Latest version as of Feb 2026
Extensions: Antigravity Toolkit, Antigravity Quota Monitor

And while writing this, it happened again with no usage and no prompt made to any models.

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Claude quota decreases automatically while using Gemini, suggesting background pings or requests to Anthropic API.
Started session with ~100% Claude quota available
Used only Gemini for coding tasks
Quota dropped to ~20% without any Claude interactions
Quota Monitor extension confirms usage happening in background

Anyone experiencing this?

Google AI Pro Subscription - Antigravity Quota Not Working as Advertised (10-Day Lockout Instead of 5-Hour Reset)
Google AI Pro Subscription - Antigravity Quota Not Working as Advertised (10-Day Lockout Instead of 5-Hour Reset)
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Update:
Just happened again. Antigravity was open, completely idle! Quota is being consumed with zero user activity, no prompts, no active sessions, no interactions whatsoever. Model quota is now fully exhausted.