Wrongful 429 error

Gemini API
1

Your configuration is 100% correct. The “n8n API key” is Tier 3 on project.

This Confirms It’s the Google Bug

You have:

  • :white_check_mark: Tier 3 paid account

  • :white_check_mark: Correct API key in n8n

  • :white_check_mark: Well under all rate limits (11/2000 RPM, 7.75K/8M TPM)

  • :cross_mark: Still getting 429 errors

This is the known Google backend bug - your requests are being incorrectly throttled despite valid Tier 3 status.

Your Next Steps

1. Report to Google directly (fastest resolution):

Go to discuss.ai.google.dev and post in an existing thread or DM @chunduriv with:

  • Screenshot showing Tier 3 status

  • The 429 error message

They’ve been fixing these case-by-case within 24-48 hours.

2

Still happening. Here’s a ready-to-post forum message:

Forum Post for Google AI Developers Forum

Post this at: discuss.ai.google.dev or DM to @chunduriv

Title: 429 RESOURCE_EXHAUSTED on Tier 3 account - well under all quota limits

Body:

I’m experiencing persistent 429 errors on my Tier 3 paid account despite being far below all quota limits.

Account Details:

  • Quota Tier: Tier 3 (confirmed in AI Studio)

  • Model: Gemini 3 Pro

Current Usage (at time of error):

  • RPM: 11 / 2,000 (0.5%)

  • TPM: 7,750 / 8,000,000 (0.1%)

  • RPD: 1,750 / Unlimited

Error Message:

{
  "code": 429,
  "message": "You exceeded your current quota...",
  "status": "RESOURCE_EXHAUSTED"
}

What I’ve tried:

  • Created new API key from Google Cloud Console

  • Verified billing is active and project is linked

  • Confirmed Tier 3 status in AI Studio

This appears to be the same backend routing bug reported by many other Tier 1/2/3 users in December 2025 - January 2026. Requests seem to be incorrectly hitting free tier limits despite paid status.

Please help resolve this. Happy to provide any additional information via DM.

Copy and post this. They’ve been responding within 24-48 hours to these reports.