# Google Stax vs OpenLLMetry (Traceloop)

Google Stax is free, with no paid plan attached. OpenLLMetry (Traceloop) is free, with no paid plan attached.

| | Google Stax | OpenLLMetry (Traceloop) |
|---|---|---|
| Pricing | Free | Free |
| Free to start | Yes | Yes |
| Category | AI Models & Local Execution | AI Models & Local Execution |
| Type | LLM Eval & Observability | LLM Eval & Observability |
| Best for | Build evals with human raters or LLM autoraters on your own data | OpenTelemetry-based instrumentation for LLM calls, vector DBs and frameworks |

## FAQ

### Google Stax vs OpenLLMetry (Traceloop): what is the difference?

Google Stax is free, with no paid plan attached and is listed for build evals with human raters or LLM autoraters on your own data. OpenLLMetry (Traceloop) is free, with no paid plan attached and is listed for openTelemetry-based instrumentation for LLM calls, vector DBs and frameworks. Both sit in LLM Eval & Observability.

### Is Google Stax or OpenLLMetry (Traceloop) cheaper to start with?

Neither — Google Stax and OpenLLMetry (Traceloop) are both free, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.

### Which should I choose, Google Stax or OpenLLMetry (Traceloop)?

Choose Google Stax if you need build evals with human raters or LLM autoraters on your own data; choose OpenLLMetry (Traceloop) if you need openTelemetry-based instrumentation for LLM calls, vector DBs and frameworks. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.

## Related

- [Google Stax](https://aitools.flocci.in/tool/google-stax)
- [OpenLLMetry (Traceloop)](https://aitools.flocci.in/tool/openllmetry-traceloop)
- [Google Stax alternatives](https://aitools.flocci.in/alternatives/google-stax)
- [OpenLLMetry (Traceloop) alternatives](https://aitools.flocci.in/alternatives/openllmetry-traceloop)
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Source: Flocci AI Tools — https://aitools.flocci.in/compare/google-stax-vs-openllmetry-traceloop

Facts last verified: October 2026