TasksErlang Microservices Instrumentation
Add OTEL tracing and logging to Erlang microservices (gateway, order, stock). Export telemetry to OTLP endpoint, log lifecycle events and HTTP requests.
Common failure modes
Models hallucinate non-existent Erlang packages. The Erlang OTEL ecosystem is poorly documented, leading to packages like `opentelemetry 1.4.2` that don't exist in Hex.
Example error
===> Package not found in any repo: opentelemetry 1.4.2
Performance
| Model | Pass Rate | Runs | Avg Cost | Avg Time |
|---|---|---|---|---|
| kimi-k2-thinking | 0% | $0.07 | 17m | |
| grok-4.1-fast | 0% | $0.08 | 15m | |
| gemini-3-flash-preview | 0% | $0.10 | 4m | |
| deepseek-v3.2 | 0% | $0.12 | 17m | |
| claude-haiku-4.5 | 0% | $0.29 | 6m | |
| glm-4.7 | 0% | $0.32 | 14m | |
| gpt-5.1 | 0% | $0.48 | 15m | |
| gemini-3-pro-preview | 0% | $0.58 | 7m | |
| gpt-5.2 | 0% | $0.76 | 17m | |
| gpt-5.2-codex | 0% | $0.78 | 25m | |
| gpt-5.1-codex-max | 0% | $0.91 | 16m | |
| grok-4 | 0% | $0.97 | 15m | |
| claude-sonnet-4.5 | 0% | $1.61 | 12m | |
| claude-opus-4.5 | 0% | $1.74 | 14m |