PromptFoo is powerful but requires YAML configs and CLI setup. PromptLens gives you the same evaluation capabilities in a web UI your whole team can use.
A side-by-side look at PromptLens and PromptFoo.
| Feature | PromptLens | PromptFoo |
|---|---|---|
| Web-based UI | Limited | |
| No CLI required | ||
| No YAML configuration | ||
| Shareable report links | ||
| Multi-model comparison | ||
| Custom test datasets | ||
| Pass/fail scoring | ||
| Version comparison | ||
| Setup time | 5 minutes | 30+ minutes |
| Self-hosted option | ||
| Open source |
Web-based UI
No CLI required
No YAML configuration
Shareable report links
Multi-model comparison
Custom test datasets
Pass/fail scoring
Version comparison
Setup time
Self-hosted option
Open source
How quickly can your team start running evaluations?
Sign up, paste your prompt, add test cases, and run. No installation, no config files, no terminal needed. Your first evaluation runs in under 5 minutes.
Install via npm, write YAML configuration files, define providers and test cases in config, then run from the CLI. Requires developer environment setup.
How do non-technical team members participate in prompt QA?
Generate shareable report links for PRs, Slack, or stakeholder reviews. Anyone can view results without an account or technical setup.
Results are primarily in the terminal or local web UI. Sharing requires self-hosting the web viewer or exporting results manually.
How does evaluation fit into your development process?
Web-based workflow that integrates with your team's existing review process. Share links in PRs and Slack for async review.
CLI-first workflow that integrates well with CI/CD pipelines. Better suited for automated testing in build pipelines.
Start testing your prompts in minutes. No credit card required, no complex setup.
Start testing free