Langfuse vs Traceloop
Langfuse
langfuse.comTraceloop
traceloop.comSide by side
| Figure | Langfuse | Traceloop |
|---|---|---|
| Price from | $29/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | Yes |
| Web | Yes | Yes |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 10 | 3 |
| Spec score · Llm Monitoring | 8.9 (#5) | 8.1 (#14) |
| Spec score · AI Agent Observability Tools | 9.0 (#6) | 8.1 (#18) |
| Acquisition news | ClickHouse announced on January 16, 2026 that it had acquired Langfuse alongside a $400 million Series D financing. | ServiceNow said on May 5, 2026 that its recently completed Traceloop acquisition added runtime observability of AI-agent behavior to AI Control Tower. |
| Evaluations | Evaluation supports LLM-as-a-Judge, heuristic or code evaluators, human review, annotation queues, and scoring of production data or experiments. | Traceloop describes built-in quality checks for faithfulness, relevance, and safety, and says users can train custom evaluators on their data. |
| Funding | Crunchbase lists one seed funding round with five investors, including Y Combinator, La Famiglia, and Lightspeed Venture Partners, but hides the total amount. | The company’s About page names Y Combinator, Ibex Investors, Sorenson Capital, Samsung Next, Grand Ventures and other backers. |
| Integrations | Langfuse lists more than 100 integrations spanning OpenTelemetry, Python and TypeScript, model providers, agent frameworks, gateways, and developer tools. | OpenLLMetry supports providers including OpenAI, Anthropic, Bedrock, Gemini, Cohere, Mistral, Ollama and Vertex AI. |
| Product | Langfuse is an open-source AI engineering platform that helps teams collaboratively debug, analyze, and iterate on AI agent applications. | Traceloop describes its platform as a monitoring, debugging, and evaluation solution for LLM applications. |
| Prompt management | Prompt Management provides versioning, one-click deployments, rollbacks, prompt labels, and per-version performance metrics. | The platform includes prompt management and a prompt registry for storing and fetching prompt configurations. |
| Rating on G2 | 4.5 out of 5 from 1 review | 5 out of 5 from 2 reviews. |
| Rating on GetApp | 0 out of 5 from 0 reviews | 0 out of 5 from 0 reviews; the listing says no user reviews are available. |
| Security | Langfuse reports annual SOC 2 Type II and ISO 27001 audits, external penetration tests, encryption, access controls, GDPR compliance, and a HIPAA-ready region. | The homepage states that Traceloop is SOC 2 and HIPAA compliant. |
| Security compliance | Langfuse reports annual SOC 2 Type 2 and ISO 27001 audits, external penetration tests, GDPR compliance, a DPA, and a HIPAA-ready region. | The maker states that Traceloop is SOC 2 and HIPAA compliant and supports cloud, on-premises and air-gapped deployment. |
| Self-hosting | The OSS edition can be deployed with Docker Compose, Kubernetes Helm, or Terraform guides for AWS, GCP, and Azure, including offline or air-gapped installations. | Full-platform self-hosting uses Kubernetes with ClickHouse, Kafka, PostgreSQL and S3-compatible storage, including air-gapped deployments. |
| Support | Hobby includes community support via GitHub, Core includes in-app support, Pro includes prioritized in-app support, and Enterprise includes support SLA and a named lead support engineer. | The Enterprise plan includes dedicated Slack support, according to the pricing page. |
| What it does | Langfuse is an open-source AI engineering platform for tracing, prompt management, evaluations, metrics, and iterative improvement of LLM applications and agents. | Traceloop monitors, evaluates, debugs and tests LLM applications and agents in production. |
Plans
Langfuse
- HobbyFree
- HobbyFree
- Core$29 a month
- Core$29 a month
- Pro$199 a month
- Pro$199 a month
- Teams Add-on$300 a month
- Teams Add-on$300 a month
- Enterprise$2,499 a month
- Enterprise$2,499 a month
In their own words
Langfuse
Langfuse is an open-source AI engineering platform for teams debugging, analyzing, and iterating on AI agent applications. Its tracing records prompts, model responses, token use, latency, tool calls, retrieval steps, and metadata. Prompt Management stores, versions, deploys, and tests prompts, then links them to traces. Evaluation features include LLM-as-a-judge, code evaluators, user feedback, manual labeling, datasets, and experiments. Integrations include Python and JS/TS SDKs, OpenTelemetry, an API, CLI, MCP Server, and popular AI frameworks. Teams can self-host the MIT-licensed core on customer infrastructure using Docker, with options including Docker Compose, Kubernetes, AWS, and Azure. Langfuse reports annual SOC 2 Type 2 and ISO 27001 audits, external penetration tests, GDPR compliance, a DPA, and a HIPAA-ready region. Its Cloud traffic uses TLS 1.2+ and stored data uses AES-256 encryption. The free Hobby plan is free and includes 50k units per month, 30 days of data access, two users, and community support via GitHub. Core costs $29 a month, billed monthly.