Recent Failures (10/10)
Error: API rate limit exceeded for model gpt-4-turbo
Step: 5/7 (3rd LLM call)
Request: { model: "gpt-4-turbo", prompt: "Summarize review findings..." }
Context: Staging rate limit (60 RPM) != Production (10,000 RPM)
Error: API rate limit exceeded for model gpt-4-turbo
Step: 5/7 (3rd LLM call)
Request: { model: "gpt-4-turbo", prompt: "Summarize review findings..." }
Context: Staging rate limit (60 RPM) != Production (10,000 RPM)
Error: API rate limit exceeded for model gpt-4-turbo
Step: 5/7 (3rd LLM call)
Request: { model: "gpt-4-turbo", prompt: "Summarize review findings..." }
Context: Staging rate limit (60 RPM) != Production (10,000 RPM)
+ 7 more failures with identical pattern
🔍 Pattern Detected
100% of failures (10/10 runs) have identical root cause:
- All fail at Step 5/7 (3rd LLM call)
- All hit staging rate limit (60 RPM)
- Error message identical across all runs
- Not LLM non-determinism — this is environment mismatch
Root Cause Analysis
Why This Test Fails
Staging environment has rate limit of 60 RPM
Production environment has rate limit of 10,000 RPM
Test expects agent to handle rate limits gracefully, but staging rate limit is so low that legitimate usage triggers it — not a real failure mode.
Will This Happen in Production?
| Scenario |
Likelihood |
| Normal usage (1-10 PRs/min) |
0% (10K RPM limit) |
| Traffic spike (100 PRs/min) |
0.6% (well under limit) |
| Runaway loop (847 retries) |
HIGH (would hit limit) |
Conclusion: Test failure doesn't predict production behavior for normal/spike scenarios. Only runaway loops would trigger this in production.
Production Behavior Confidence
How confident are we this test predicts production failures?
15% confidence
Environment mismatch invalidates test
💡 Recommendation
Option 1 (Preferred): Update staging rate limit to match production (10,000 RPM). Test real failure handling.
Option 2: Adjust test expectations for staging environment (mark as "expected failure" with explanation).
Option 3: Add separate "runaway loop detection" test that's environment-agnostic.