Langfuse vs Portkey
Detailed side-by-side comparison to help you choose the right tool
Langfuse
🔴DeveloperLLM Observability
Langfuse is an open-source LLM observability and engineering platform providing tracing, prompt management, evaluations, and dataset management for production AI applications.
Was this helpful?
Starting Price
FreePortkey
🔴DeveloperLLM Gateways & Infrastructure
AI gateway and control plane for production GenAI: routes calls across 250+ LLMs with one unified API, plus guardrails, prompt management, observability, budgets, and an MCP-aware agent runtime.
Was this helpful?
Starting Price
CustomFeature Comparison
Scroll horizontally to compare details.
Langfuse - Pros & Cons
Pros
- ✓Open source with free self-hosting — full feature parity without usage limits
- ✓Free Hobby tier on cloud with no credit card — lowest barrier to entry in the category
- ✓Trace graphs for multi-agent systems are genuinely useful for debugging complex failures
- ✓Prompt management + evals turns prompt engineering into a systematic, measurable process
- ✓40,000+ builders using it — extensive community resources and integrations
- ✓Integrates natively with LangChain, LlamaIndex, OpenAI SDK, and Anthropic
Cons
- ✗Pro plan units pricing ($8/100k) can add up for high-volume production applications
- ✗Enterprise SSO requires the $300/month Teams add-on on top of Pro — costly for mid-size teams
- ✗Self-hosting requires Docker/Kubernetes operational knowledge
- ✗UI can feel overwhelming for teams who just want simple cost/latency dashboards
- ✗Real-time alerting features are less developed than commercial-first alternatives like Arize
- ✗Enterprise tier at $2,499/month is priced for large organizations — no mid-market option
Portkey - Pros & Cons
Pros
- ✓Provider-agnostic routing with declarative configs that an SRE can change without app deploys
- ✓Strong governance primitives (virtual keys, budgets, RBAC) that internal gateways usually skip
- ✓Built-in guardrails and observability remove the need for a separate vendor for each
- ✓Self-hosted and BYOC options make it viable for regulated and air-gapped deployments
Cons
- ✗Pricing page is JS-rendered and dollar amounts must be confirmed manually on site
- ✗Adds a network hop and latency overhead — small but non-zero next to direct provider calls
- ✗Overkill for single-provider single-app teams who do not need governance
- ✗Some advanced features (Agents, BYOC) require Enterprise contracts
Not sure which to pick?
🎯 Take our quiz →🔒 Security & Compliance Comparison
Scroll horizontally to compare details.
Price Drop Alerts
Get notified when AI tools lower their prices
Get weekly AI agent tool insights
Comparisons, new tool launches, and expert recommendations delivered to your inbox.