# Promptfoo vs W&B Weave — Fit & Features

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

Compare Promptfoo and W&B Weave by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### 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

### W&B Weave
Trace and evaluate generative AI applications with a developer toolkit.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- LLM tracing
- Evaluation datasets
- Experiment comparison
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://docs.coreweave.com/products/wandb/weave
- [Read W&B Weave profile](https://trutool.co/tools/w-b-weave): Read W&B Weave profile