Users with Google AI Pro or Ultra subscriptions cannot currently use their benefits with CPE's Gemini provider, forcing them to use a separate API key with pay-as-you-go billing. The request is to integrate OAuth support for these plans, similar to Google's official Gemini CLI, to allow users to leverage their existing subscriptions and higher rate limits.
# [Enhancement]: Support Google AI Pro/Ultra Plans via OAuth (Gemini Code Assist) ### Enhancement Category New AI model support ### Problem or Use Case Users with Google AI Pro or Ultra subscriptions cannot currently use their subscription benefits with CPE's Gemini provider. Instead, they must use a separate API key with pay-as-you-go billing, even though they've already paid for a monthly plan with included usage and higher rate limits. Google's official Gemini CLI supports this via an OAuth flow where users authenticate with their Google account and use their subscription's included credits. This is valuable because: 1. **Higher rate limits**: Pro/Ultra subscribers get significantly higher model request limits for both Gemini CLI and Gemini Code Assist 2. **Cost efficiency**: Users can leverage their existing subscription instead of double-paying via API credits 3. **Unified billing**: Keep all Gemini usage under a single subscription rather than split billing 4. **Lower barri