toolgrep / Monitoring & observability / Langfuse
Alternatives to Langfuse
Langfuse: Open Source Agent Evals & Observability. 8 products similar to Langfuse, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 6 of 8 offer an MCP server, 4 of 8 are open source.
- telemetry.dev
LLM observability for AI agents, built on OpenTelemetry
- LangWatch
Agent observability and evals platform for tracing, testing, routing and governing LLM calls
- Latitude
Open-source AI agent observability and monitoring platform
- Arize AI
Agent observability, evaluation & improvement platform
- Braintrust
The active observability platform for agents
- Respan
The AI router with built-in observability & automated evals.
- Opik
End-to-end AI observability and evaluation platform for LLM applications and agents
- Middleware
Full-stack observability platform with an AI SRE agent
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Langfuse | Freemium | yes | yes | yes | yes | yes |
| telemetry.dev | Freemium | yes | yes | no | yes | no |
| LangWatch | Freemium | yes | yes | yes | yes | yes |
| Latitude | Freemium | yes | yes | yes | yes | yes |
| Arize AI | Freemium | yes | yes | yes | yes | yes |
| Braintrust | Freemium · from $0 | yes | yes | yes | yes | no |
| Respan | Freemium | yes | yes | yes | yes | — |
| Opik | Freemium | yes | yes | yes | yes | yes |
| Middleware | Freemium · from $0.3 per GB (pay-as-you-go); free tier with up to 100GB data | yes | yes | no | yes | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/langfuse/alternatives