Quick Comparison
Braintrust: Best overall for teams. UI-focused, simple A/B testing, non-technical friendly. $50—300/mo.
Promptfoo: Best for engineers. Open-source, YAML-based, git-friendly. Free with self-hosting.
Vellum: Best for workflows. Advanced workflows, integrations, custom evaluations. $300—1000+/mo.
PromptHub: Enterprise-focused. API-first, custom integrations, compliance. Contact sales.
Braintrust: Best for Growing Teams
Strengths: Intuitive UI, evaluations, A/B testing, good for non-technical
Weaknesses: Limited workflow customization
Best for: Teams 3—50, fast iteration
Cost: $50—300/mo
Promptfoo: Best for Engineers
Strengths: Open-source, git-friendly, reproducible
Weaknesses: Requires CLI setup, less UI
Best for: Dev teams who use git, automation
Cost: Free (self-hosted), enterprise tiers available
Vellum: Best for Advanced Workflows
Strengths: Complex workflows, integrations, custom evals
Weaknesses: Steep learning curve, higher cost
Best for: Teams building production AI apps
Cost: $300—1000+/mo
PromptHub: Enterprise-Focused
Strengths: Compliance, custom integrations, dedicated support
Weaknesses: Expensive, longer sales cycle
Best for: Large orgs with compliance needs
Cost: Custom pricing
Which Should You Choose?
| Scenario | Choice | Why |
|---|---|---|
| Team 5—10, rapid testing | Braintrust | Simple, collaborative, reasonable cost |
| Developers who prefer code | Promptfoo | Git-friendly, open-source |
| Production AI workflows | Vellum | Advanced features, integrations |
| Enterprise compliance | PromptHub | Custom, support, certifications |
Sources
- Braintrust. Product docs
- Promptfoo. GitHub and documentation
- Vellum. Platform comparison
Common Mistakes
- Choosing based on pricing alone
- Not testing with real prompts first
- Underestimating setup/migration time
- Picking tool before defining needs