Compare
Langfuse vs SpiceDB
Observability for LLM apps, not a permissions database.
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LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️♂️
SpiceDBOpen Source, Google Zanzibar-inspired, fine-grained permissions management. https://play.authzed.com/schemaWhich to pick
Pick Langfuse if you want…
- LLM observability & analytics
- Integrations with TypeScript, .NET or PHP (on Langfuse's list, not SpiceDB's)
Pick SpiceDB if you want…
- Zanzibar-style permission databases
- Integrations with NodeJS, Kubernetes or Prometheus (on SpiceDB'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.
- SpiceDB:SpiceDB is an open-source, Google Zanzibar-inspired database for fine-grained permissions at scale.
- Best for
- Langfuse:LLM observability & analytics
- SpiceDB:Zanzibar-style permission databases
- Who it’s for
- Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
- SpiceDB:Developers building authorization services for cloud-native applications.
- Pricing
- Langfuse:Freemium
- SpiceDB:Freemium
- Plans
- Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
- SpiceDB:Open Source Free
- Open source
- Langfuse:Yes, 35,097 GitHub stars
- SpiceDB:Yes, 7,099 GitHub stars
- Works with
- Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
- SpiceDB:Go, Java, NodeJS, Python, Ruby, Kubernetes, Prometheus, OpenTelemetry
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.
SpiceDB features
- Expressive APIs. gRPC and HTTP/JSON endpoints for authorization logic.
- Distributed Graph Engine. Parallel graph processing faithful to the Zanzibar architecture.
- Pluggable Storage. Supports in-memory, Spanner, CockroachDB, PostgreSQL and MySQL backends.
- Configuration Language. SpiceDB Schema lets you define relationships, permissions and caveats.
- Deep Observability. Prometheus metrics, pprof profiles, structured logging and OpenTelemetry tracing.
- Kubernetes Operator. Manage, scale and upgrade SpiceDB clusters with a single resource.
- zed CLI. Command-line tool for schema validation, permission checks and context switching.
- Official Client Libraries. Go, Java, NodeJS, Python and Ruby SDKs for easy integration.
Langfuse vs SpiceDB FAQ
Is Langfuse or SpiceDB free?+
Langfuse has a free plan (Hobby); paid plans start at $29/month (Core). SpiceDB has a free plan (Open Source) and paid plans.
Is Langfuse or SpiceDB open source?+
Yes, both are open source: Langfuse (langfuse/langfuse on GitHub) and SpiceDB (authzed/spicedb on GitHub, Apache-2.0 license).
Do Langfuse and SpiceDB integrate with the same tools?+
Partly. Both list Python, Go, Java and Ruby. Langfuse also lists TypeScript, .NET, PHP, Swift and 6 more; SpiceDB also lists NodeJS, Kubernetes, Prometheus and OpenTelemetry.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.