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Langfuse vs OpenRouter

Features, pricing, ratings, and pros and cons, side by side.

Verdict

Langfuse and OpenRouter are both Developer Tools tools. Both have a free plan or trial. Only Langfuse is available on CLI.

Best overall

Langfuse

  • AI Engineers
  • Software Developers
  • ML Engineers
  • Product Teams

Choose Langfuse if

  • You want a tool built for production tracing and debugging of LLM apps and agents, prompt versioning, and systematic evaluation on real data.
  • MIT-licensed core with free self-hosting, avoiding vendor lock-in.
  • Covers tracing, prompt management and evaluation in one platform.

Choose OpenRouter if

  • You want a tool built for switching or comparing models without code changes, adding provider fallbacks, consolidating LLM billing across vendors.
  • Single OpenAI-compatible endpoint covering 500+ models from 80+ providers, so switching models rarely needs code changes.
  • Inference passes through at provider list prices with no markup and no minimums or lock-in.
Best for beginners
Langfuse
Best for business
Langfuse

Features

18 features compared.

  • Tracing
    Langfuse
    Available
    OpenRouter
    Not available
  • Evaluation
    Langfuse
    Available
    OpenRouter
    Not available
  • Prompt Management
    Langfuse
    Available
    OpenRouter
    Not available
  • Playground
    Langfuse
    Available
    OpenRouter
    Not available
  • Datasets and Experiments
    Langfuse
    Available
    OpenRouter
    Not available
  • Cost and Latency Dashboards
    Langfuse
    Available
    OpenRouter
    Not available
  • Open-Source Self-Hosting
    Langfuse
    Available
    OpenRouter
    Not available
  • APIs and MCP Servers
    Langfuse
    Available
    OpenRouter
    Not available
  • Unified API
    Langfuse
    Not available
    OpenRouter
    Available
  • Automatic Fallbacks
    Langfuse
    Not available
    OpenRouter
    Available
  • Auto-Routing and Provider Controls
    Langfuse
    Not available
    OpenRouter
    Available
  • Free Models
    Langfuse
    Not available
    OpenRouter
    Available
  • Prompt Caching
    Langfuse
    Not available
    OpenRouter
    Available
  • Bring Your Own Key
    Langfuse
    Not available
    OpenRouter
    Available
  • Multimodal Models
    Langfuse
    Not available
    OpenRouter
    Available
  • Rankings and Benchmarks
    Langfuse
    Not available
    OpenRouter
    Available
  • Regional Routing and Private Endpoints
    Langfuse
    Not available
    OpenRouter
    Available
  • Hosted MCP Server
    Langfuse
    Not available
    OpenRouter
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Langfuse
    Freemium
    OpenRouter
    Freemium
  • Free plan
    Langfuse
    Yes
    OpenRouter
    Yes
  • Starting price
    Langfuse
    $0
    OpenRouter
    $0
  • Plans
    Langfuse
    4 plans
    OpenRouter
    4 plans

Langfuse plans

  • Hobby

    $0

    Free cloud tier for individuals and early projects

    • 50k units/month
    • 30 days data access
    • 2 users
    • community support

  • Core

    $29/month

    Paid tier for small production teams

    • 100k units/month included
    • 90 days data access
    • unlimited users
    • in-app support

  • Pro

    $199/month

    Teams needing long retention and compliance reports

    • 100k units/month included
    • 3 years data access
    • data retention management
    • SOC 2 and ISO 27001 reports
    • HIPAA BAA available
    • high rate limits

  • Enterprise

    $2,499/month

    Large organizations with security and support requirements

    • Everything in Pro
    • audit logs
    • SCIM API
    • uptime and support SLAs
    • named lead support engineer
    • invoice or AWS Marketplace billing

OpenRouter plans

  • Free

    $0

    Testing with free models

    • 25+ free models
    • 4 free providers
    • 5 workspaces
    • community support
    • 50 requests/day

  • Standard

    Most popular

    5.5%/one-time

    Pay-as-you-go with a fee on credit purchases

    • 500+ models
    • 80+ providers
    • auto-routing
    • budgets
    • prompt caching
    • management API keys
    • email support

  • Business

    8%/one-time

    Pay-as-you-go for larger teams

    • Everything in Standard
    • 1,000 workspaces
    • EU and US in-region routing
    • Workload Identity Federation
    • advanced notifications

  • Enterprise

    Custom/custom

    Contract-based for large organizations

    • Everything in Business
    • SSO/SAML
    • SLAs
    • invoicing
    • custom rate allowances
    • dedicated support team

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed November 2026.

Langfuse
8.4overall
OpenRouter
8.3overall

Langfuse leads in 4 categories and OpenRouter in 1.

  • Ease of Use

    OpenRouter leads by 0.8
    Langfuse
    7.8
    OpenRouter
    8.6

  • Feature Depth

    Langfuse leads by 0.3
    Langfuse
    8.8
    OpenRouter
    8.5

  • Value for Money

    Langfuse leads by 0.4
    Langfuse
    8.7
    OpenRouter
    8.3

  • Performance & Speed

    Langfuse leads by 0.4
    Langfuse
    8.4
    OpenRouter
    8.0

  • Documentation & Support

    Langfuse leads by 0.3
    Langfuse
    8.5
    OpenRouter
    8.2

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

Langfuse

Pros

  • MIT-licensed core with free self-hosting, avoiding vendor lock-in.
  • Covers tracing, prompt management and evaluation in one platform.
  • Free Hobby tier with 50k units per month and no credit card required.
  • Over 100 integrations, plus OpenTelemetry for languages without a native SDK.
  • Core plan at $29/month with unlimited users.

Cons

  • Hobby is limited to 2 users and 30 days of data access.
  • SOC 2, ISO 27001 and HIPAA support start at the $199/month Pro plan, and SSO and RBAC need a $300/month add-on.
  • Audit logs, SCIM and SLAs are restricted to the $2,499/month Enterprise plan.
  • Usage-based unit overage adds cost for high-volume tracing.

OpenRouter

Pros

  • Single OpenAI-compatible endpoint covering 500+ models from 80+ providers, so switching models rarely needs code changes.
  • Inference passes through at provider list prices with no markup and no minimums or lock-in.
  • Automatic provider fallbacks reduce exposure to outages and rate limits.
  • Free models and a free router allow testing without paying.
  • Enterprise options include SSO/SAML, SLAs, EU and US in-region routing and private endpoints.

Cons

  • A 5.5% (Standard) or 8% (Business) platform fee applies to every credit purchase, and platform fees are non-refundable.
  • The free tier has no auto-routing, budgets, prompt caching or BYOK, and is limited to 50 requests per day.
  • No official mobile app or desktop client; mobile access is through third-party clients.
  • Business and Enterprise pricing, and the Stripe acquisition announced in August 2026, add some uncertainty about future terms.

Platforms

  • Web
    Langfuse
    Supported
    OpenRouter
    Supported
  • Windows
    Langfuse
    Not supported
    OpenRouter
    Not supported
  • macOS
    Langfuse
    Not supported
    OpenRouter
    Not supported
  • iOS
    Langfuse
    Not supported
    OpenRouter
    Not supported
  • Android
    Langfuse
    Not supported
    OpenRouter
    Not supported
  • API
    Langfuse
    Supported
    OpenRouter
    Supported
  • Browser Extension
    Langfuse
    Not supported
    OpenRouter
    Not supported
  • CLI
    Langfuse
    Supported
    OpenRouter
    Not supported

Integrations

Langfuse

23 integrations
  • LangChain
  • Vercel AI SDK
  • LiteLLM
  • Pydantic AI
  • Google ADK
  • CrewAI
  • LlamaIndex
  • OpenAI Agents
  • Mastra
  • OpenAI
  • Anthropic
  • Amazon Bedrock
  • Azure OpenAI
  • Google Gemini
  • Mistral AI
  • vLLM
  • Groq
  • Claude Code
  • Cursor
  • Dify
  • n8n
  • PostHog
  • OpenTelemetry

OpenRouter

No integrations listed.

Company

  • Company
    Langfuse
    Langfuse
    OpenRouter
    OpenRouter, Inc.
  • Founded
    Langfuse
    2023
    OpenRouter
    2023
  • Headquarters
    Langfuse
    Berlin, Germany
    OpenRouter
    Not listed
  • Monthly users
    Langfuse
    Not listed
    OpenRouter
    10M+
  • Listing
    Langfuse
    Claimed
    OpenRouter
    Claimed

Frequently asked questions

Is Langfuse better than OpenRouter?

It depends on your workflow. Langfuse is built for production tracing and debugging of LLM apps and agents, prompt versioning, and systematic evaluation on real data. OpenRouter is built for switching or comparing models without code changes, adding provider fallbacks, consolidating LLM billing across vendors.

What are the key feature differences between Langfuse and OpenRouter?

Langfuse: Open-source platform to trace, evaluate and improve LLM applications and agents. OpenRouter: One API and one bill for hundreds of AI models across many providers. OpenRouter is rated 5.0/5 from 1 user review.

Does Langfuse or OpenRouter have a free plan?

Yes, both do. Langfuse is freemium and OpenRouter is freemium, and each has a free plan or trial.

Which is cheaper, Langfuse or OpenRouter?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.