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featured

Langfuse

Trace LLM calls, prompts, and evals so you can see what the agent actually did

4.7
Free tier

Free

featured

Braintrust

Observability and evals for shipping quality AI agents at scale

4.7
Free tier

Free

featured

Helicone

AI gateway and observability to route, debug, and analyze LLM apps

4.7
Free

Free trial

SpecLangfuseBraintrustHelicone
CategoryAI ToolsAI ToolsAI Tools
PricingFree + Cloud paidFree + paidFree trial + paid
Rating4.7 (1,400)4.7 (1,800)4.7 (2,100)
Community90/10090/10089/100
Tierfeaturedfeaturedfeatured
Best forllm, observability, prompts, evalsevals, observability, agents, llmllm, observability, gateway, tracing
Top features
  • ·LLM traces
  • ·Prompt versions
  • ·Evals and scores
  • ·Agent traces
  • ·Evals and scoring
  • ·Quality gates
  • ·Unified AI gateway
  • ·Request traces
  • ·Cost and latency views