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Langfuse vs UsageGate
Langfuse provides observability for LLM apps, not usage enforcement.
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LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️♂️
UsageGateUsageGate checks every requestWhich to pick
Pick Langfuse if you want…
- LLM observability & analytics
- Open-source code (langfuse/langfuse on GitHub)
- Integrations with Python, Go or Java (on Langfuse's list, not UsageGate's)
Pick UsageGate if you want…
- Per-request usage enforcement for subscription plans
- The lower starting price: $19/month against $29/month
- Integrations with Next.js, Stripe or Redis (on UsageGate's list, not Langfuse's)
Side by side
- What it is
- Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.
- UsageGate:UsageGate enforces subscription limits by checking and consuming usage on each request.
- Best for
- Langfuse:LLM observability & analytics
- UsageGate:Per-request usage enforcement for subscription plans
- Who it’s for
- Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
- UsageGate:Developers building SaaS products that need per-feature usage enforcement.
- Pricing
- Langfuse:Freemium
- UsageGate:Freemium
- Plans
- Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
- UsageGate:Free $0 · Hobby $19/mo per month · Pro $79/mo per month · Scale $299/mo per month
- Open source
- Langfuse:Yes, 35,097 GitHub stars
- UsageGate:—
- Works with
- Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
- UsageGate:Next.js, Stripe, Redis, TypeScript
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.
UsageGate features
- Access checks. canAccess call verifies if a user can use a feature at request time.
- Consume credits. Deducts metered units like AI credits or API calls after a successful check.
- Stripe sync. Automatically syncs with Stripe subscriptions for billing.
- Redis-backed enforcement. Fast, reliable storage of usage data using Redis.
- TypeScript SDK. npm package @usagegate/sdk for easy integration in Next.js routes.
- Plan definition UI. Dashboard lets you create and edit named plans with custom feature limits.
Langfuse vs UsageGate FAQ
Is Langfuse or UsageGate free?+
Langfuse has a free plan (Hobby); paid plans start at $29/month (Core). UsageGate has a free plan; paid plans start at $19/month (Hobby).
Which is cheaper, Langfuse or UsageGate?+
UsageGate is cheaper to start with: UsageGate's Hobby plan ($19/month) against Langfuse's Core plan ($29/month).
Is Langfuse or UsageGate open source?+
Langfuse is open source (langfuse/langfuse on GitHub). DevHunt has no public source repository on record for UsageGate.
Do Langfuse and UsageGate integrate with the same tools?+
Partly. Both list TypeScript. Langfuse also lists Python, Go, Java, .NET and 9 more; UsageGate also lists Next.js, Stripe and Redis.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.