Freemium
Added on Nov 14,2026
Langfuse is an open-source platform for AI agent evaluation and observability. It records every AI call a company makes and every agent its teams build, so teams can track usage and costs, trace and evaluate agents, and use production logs to improve their AI applications.
You can instrument agents with the Langfuse SDKs or any OpenTelemetry exporter, or route OpenAI and Anthropic calls through the new Langfuse AI Gateway without changing code. Every call lands in Langfuse for tracing, evaluations and cost tracking, and data can be exported to a data warehouse.
Key features include tracing, dashboards and alerts for observing agents, prompt and skill management, evaluations, datasets and experiments, annotation queues, and an in-app agent called Halo. Every feature is also available through MCP, a CLI, an API and the SDKs.
The AI Gateway adds gateway keys, model access controls and cost per user. Langfuse lists more than 100 integrations covering coding and desktop assistants, custom agents for support, voice and RAG, and low-code workflow builders. It can run in Langfuse Cloud or be self-hosted with Docker Compose, Kubernetes or Terraform on AWS, Google Cloud and Azure.
Langfuse has joined ClickHouse and reports more than 100,000 engineers building on the platform and over 110 billion observations per month.
Pricing: the Hobby cloud plan is free with no credit card and includes 50,000 units per month, 30 days of data access and two users. Core costs 29 USD per month with 100,000 units, 90 days of data and unlimited users. Pro costs 199 USD per month with three years of data access, higher rate limits and compliance reports, plus an optional 300 USD per month Teams add-on for SSO and fine-grained RBAC. Enterprise starts at 2,499 USD per month. Extra usage is 8 USD per 100,000 units, and discounts are available for startups, education and open-source projects.
Langfuse is suited to AI engineers, product teams and enterprises that need to monitor, debug and evaluate LLM applications and agents in production.
Popular alternatives to Langfuse include Pollinations, NemoClaw and Agnes AI. Compare their pricing and what each is best for below.
| Tool | Pricing | Best for |
|---|---|---|
| Pollinations | Freemium | Developers and hobby builders who want a single API for adding AI images, audio and text to their websites, bots and app... |
| NemoClaw | Free | Developers and platform teams who want to run always-on AI agents on NVIDIA hardware under policy-based security control... |
| Agnes AI | Freemium | Developers building AI-powered apps who want access to several models through one API. |
| OrcaRouter | Freemium | Developers and teams who want to balance AI quality and cost across many models. |
| DiagramGPT | Free | Developers and students who need to sketch system designs and workflows quickly by describing them in words. |
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