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EUrouter vs Langfuse

Focuses on observability and analytics for LLM apps, not routing or compliance.
EUrouterEuropean AI routing. Sovereign, GDPR-compliant, drop-in OpenRouter replacementLangfuseOpen Source Observability & Analytics for LLM Apps 🕵️‍♂️

Side by side

What it is
EUrouter:EUrouter provides a single OpenAI-compatible API endpoint to route AI requests to 100+ models with GDPR-compliant EU data residency.
Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.
Best for
EUrouter:OpenAI-compatible EU-data-resident routing
Langfuse:LLM observability & analytics
Who it’s for
EUrouter:Developers and enterprises needing EU-compliant AI model access.
Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
Pricing
EUrouter:Freemium
Langfuse:Freemium
Plans
EUrouter:Free €0/mo · Plus €39/mo · Pro €99/mo
Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
Open source
EUrouter:—
Langfuse:Yes, 35,097 GitHub stars
Works with
EUrouter:OpenAI API schema
Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
DevHunt upvotes
EUrouter:1
Langfuse:89
Launched on DevHunt
EUrouter:Feb 2026
Langfuse:Jan 2023

EUrouter features

  • Smart routing. Automatically selects the best model based on price, quality or latency.
  • OpenAI compatible. Drop-in schema lets you switch from OpenAI/OpenRouter with a single line change.
  • Budgets & limits. Per-key spend caps, request limits and organization-wide controls.
  • Observability. Real-time logs, metrics and tracing for every request.
  • EU-only infrastructure. All requests are processed on EU servers with zero US dependencies.
  • Failover & reliability. Built-in failover ensures high availability across multiple EU providers.
EUrouter on DevHunt →Alternatives

Langfuse features

  • Hierarchical Traces. Capture every LLM call, tool invocation and retrieval step with filters for user, session, cost and latency.
  • Prompt Management. Version, fetch, release and cache prompts separately from code with one-click deployments.
  • Evaluation Engine. Run LLM-as-judge, heuristic or human-review evaluations on production data or experiments.
  • Experiments & Datasets. Define test cases, run experiments and create golden datasets for continuous improvement.
  • Dashboards & Alerts. Monitor cost, latency and quality via custom dashboards and automated alerts.
  • Human Annotation. Collaborative human-in-the-loop workflows with annotation queues.
  • Extensive Integrations. Supports Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift and 100+ agent frameworks and model providers.
  • Self-hosted & Cloud Options. Available as hosted SaaS or self-hosted under MIT license.
Langfuse on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.