HELM
6.5#11 in llm evaluation toolsFree planFree planWebAPISelf-hosted
VisitHELM vs Promptfoo
What both publish
| Fact | HELM | Promptfoo |
|---|---|---|
| Founded | 2022 | 2024 |
| Installation | The project instructs users to install HELM from PyPI with `pip install crfm-helm`. | Installation is available through npm, npx, Homebrew, and a project dependency; npm and npx require Node.js 22.22.0 or newer. |
| License | The repository identifies HELM as open source and links to an Apache-2.0 license. | The open-source project is distributed under the MIT license. |
| Model providers | It offers a unified interface to models from providers including OpenAI, Anthropic and Google. | Provider documentation covers OpenAI, Anthropic, Google, Vertex, HTTP, JavaScript, Python, Ruby, shell, OpenAI Agents, and other services. |
HELM plans
- HELMFree
Promptfoo plans
- CommunityFree
- EnterprisePriced on request
- On-PremisePriced on request
Pick HELM if…
HELM suits developers and researchers who want to evaluate foundation models with reproducible benchmarks and inspectable results. Its self-hosted setup may fit users who need to configure private models or local inference.
Pick Promptfoo if…
Promptfoo suits developers and enterprise teams evaluating prompts, model outputs, and AI application risks. Its local and self-hosted options may appeal to teams that want to run the Community plan on their own infrastructure.