# OpenLIT vs Promptfoo — Fit & Features

Canonical: https://trutool.co/compare/openlit-vs-promptfoo
Author: Snehil (https://trutool.co/authors/snehil)

Compare OpenLIT and Promptfoo by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### OpenLIT
Instrument AI applications using open-source OpenTelemetry observability.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- LLM observability
- Cost tracking
- OpenTelemetry integration
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://openlit.io/pricing
- [Read OpenLIT profile](https://trutool.co/tools/openlit): Read OpenLIT profile

### Promptfoo
Test prompts and models with repeatable evaluations and AI red teaming.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- Prompt testing
- Model comparison
- Red teaming
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://www.promptfoo.dev/pricing/
- [Read Promptfoo profile](https://trutool.co/tools/promptfoo): Read Promptfoo profile