These tools competes with

VellumvsHumanloop

Prompt engineering, testing, and deployment platform versus Prompt management, A/B testing, and evals for production LLM apps

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Choose Vellum when…

  • •You want a full LLM product development platform
  • •Prompt management, testing, and deployment in one place
  • •You're iterating on prompts in a team workflow

Choose Humanloop when…

  • •managing prompts as production artifacts with version control
  • •running A/B tests across different models and prompt variants
  • •need human labeling and automated evals in one platform

Side-by-side comparison

Field
Vellum
Humanloop
Category
Prompt & Eval
Prompt & Eval
Type
Commercial
Commercial
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Starter: Paid
Free: $0Growth: $200/mo
GitHub Stars
—
—
Health
—
—

Vellum

End-to-end platform for prompt engineering teams. Version prompts, run A/B tests, evaluate quality, and deploy to production with a visual interface.

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Humanloop

Humanloop is a platform for managing prompts, running experiments, and evaluating LLM outputs in production. It provides a prompt editor, version history, A/B testing across models, and human plus automated eval workflows — keeping your prompts in sync with your code.

Website ↗

Only Vellum (2)

PromptFooHumanloop

Only Humanloop (3)

VellumPromptLayerGalileo

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