Braintrust vs Vellum

Detailed side-by-side comparison to help you choose the right tool

Braintrust

🔴Developer

LLM Observability

AI observability platform for evals, production tracing, prompt management, and regression detection.

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Starting Price

Free
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Vellum

🔴Developer

LLM Development Platforms

Development platform for production LLM apps: prompt engineering, evaluation, retrieval, and workflow orchestration in one workspace.

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Starting Price

Custom
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Feature Comparison

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FeatureBraintrustVellum
CategoryLLM ObservabilityLLM Development Platforms
Pricing Plans340 tiers8 tiers
Starting PriceFree
Key Features
  • • Workflow Runtime
  • • Tool and API Connectivity
  • • State and Context Handling
  • • Visual workflow editor for multi-step LLM pipelines with branching, tool use, and RAG
  • • Collaborative prompt engineering with version control and diff tracking
  • • Automated evaluation pipelines with custom scoring, LLM-as-judge, and regression testing

Braintrust - Pros & Cons

Pros

  • ✓Evals, tracing, and prompt playground in a single shared workbench
  • ✓Playground pulls real production traces in for side-by-side comparison
  • ✓Regression detection across model swaps is a first-class workflow
  • ✓Native integrations with the major SDKs (OpenAI, Anthropic, LangChain, Vercel AI)
  • ✓MCP support makes tool traces structured spans rather than blobs

Cons

  • ✗Jump from Free to $249/mo Pro is steep with limited middle tier
  • ✗LLM-as-judge scorers require careful rubric design to be reliable
  • ✗Opinionated workflow — friction if your team prefers fully custom pipelines
  • ✗Self-host only on Enterprise

Vellum - Pros & Cons

Pros

  • ✓Prompts + evals + workflows + observability in one product reduces tool sprawl
  • ✓Versioning/rollback story is stronger than most LLM platforms
  • ✓LLM-as-judge + custom Python scorers cover most eval needs
  • ✓Built-in RAG removes the need for a separate vector DB integration
  • ✓Engineering-friendly UX — feels like a real IDE, not a chat playground

Cons

  • ✗$500/mo entry tier is steep for solo developers
  • ✗Visual workflows hit limits when logic gets very complex
  • ✗Eval suite is solid but Braintrust goes deeper on eval-specific UX
  • ✗Vendor-managed RAG limits some advanced retrieval setups
  • ✗Pricing was reported recently — verify with sales before purchase

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🔒 Security & Compliance Comparison

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Security FeatureBraintrustVellum
SOC2✅ Yes—
GDPR✅ Yes—
HIPAA✅ Yes—
SSO✅ Yes—
Self-Hosted❌ No—
On-Prem❌ No—
RBAC✅ Yes—
Audit Log——
Open Source❌ No—
API Key Auth✅ Yes—
Encryption at Rest——
Encryption in Transit——
Data Residency——
Data Retentionconfigurable—
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Review BraintrustReview Vellum