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EUrouter vs Langfuse
Short answer: Pick EUrouter if you want OpenAI-compatible EU-data-resident routing; pick Langfuse if you want LLM observability & analytics. EUrouter has a free plan, paid from €39/month; Langfuse has a free plan, paid from $29/month.
EUrouterEuropean AI routing. Sovereign, GDPR-compliant, drop-in OpenRouter replacement.png?width=96)
LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️♂️Which to pick
Pick EUrouter if you want…
- OpenAI-compatible EU-data-resident routing
- Integrations with OpenAI API schema (on EUrouter's list, not Langfuse's)
Pick Langfuse if you want…
- LLM observability & analytics
- Open-source code (langfuse/langfuse on GitHub)
- Integrations with Python, TypeScript or Go (on Langfuse's list, not EUrouter's)
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
- Starting price
- EUrouter:€39/month (Plus)
- Langfuse:$29/month (Core)
- Free plan or trial
- EUrouter:Free plan (Free)
- Langfuse:Free plan (Hobby)
- 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
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.
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.
EUrouter vs Langfuse FAQ
What is the difference between EUrouter and Langfuse?+
Langfuse: Focuses on observability and analytics for LLM apps, not routing or compliance.
Should I use EUrouter or Langfuse?+
Pick EUrouter if you want OpenAI-compatible EU-data-resident routing or integrations with OpenAI API schema (on EUrouter's list, not Langfuse's). Pick Langfuse if you want LLM observability & analytics, open-source code (langfuse/langfuse on GitHub) or integrations with Python, TypeScript or Go (on Langfuse's list, not EUrouter's).
Is EUrouter or Langfuse free?+
EUrouter has a free plan; paid plans start at €39/month (Plus). Langfuse has a free plan (Hobby); paid plans start at $29/month (Core).
Which is cheaper, EUrouter or Langfuse?+
EUrouter starts at €39/month (Plus) and Langfuse starts at $29/month (Core); the plans are billed differently, so compare what's included.
Is EUrouter or Langfuse open source?+
Langfuse is open source (langfuse/langfuse on GitHub). DevHunt has no public source repository on record for EUrouter.
Do EUrouter and Langfuse integrate with the same tools?+
Their integration lists don't overlap: EUrouter lists OpenAI API schema; Langfuse lists Python, TypeScript, Go, Java and 10 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.