Langfuse
Platform for monitoring, evaluating, and improving LLM applications and AI agents using production data and continuous testing.
- Also known as
- langfuse
Available worldwide
What is Langfuse?
A comprehensive observability and development platform that combines tracing, prompt management, evaluation, and experimentation, enabling teams to understand LLM behavior in production and ship improved applications with confidence
Langfuse pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Multiple tiers available; specific pricing not shown in provided text
Hobby
FreeCore
Enterprise
What Langfuse does
The capabilities that matter for mlops & llmops tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Tool role
- LLM observability / eval
- Self-hostable / OSS core
- ✓
- Managed cloud available
- ✓
- On-prem / VPC deployment
- ✓
- LLM tracing / observability
- ✓
- Evaluation (offline / LLM-judge / human)
- ✓
- Prompt management + versioning
- ✓
- Experiment tracking / model registry
- ✓
- Model serving / inference endpoint
- ✗
- OpenTelemetry / OpenLLMetry compatible
- ✓
- Framework-agnostic
- ✓
- Multi-provider model support
- ✓
- No-train-on-customer-data guarantee
- -
Platform & deployment
Independently observed- Web
- Cloud / SaaS
- Self-hosted
Integrations (24)
Independently observed- OpenTelemetry⇄•
- LangChain
- Vercel AI SDK
- LiteLLM
- Pydantic AI
- Google ADK
- CrewAI
- LiveKit
- Haystack
- LlamaIndex
- OpenAI
- Anthropic
- Amazon Bedrock
- Azure OpenAI
- Mistral AI
- Google Gemini
- xAI
- vLLM
- Groq
- OpenAI SDK
- Cohere
- Elasticsearch
- OpenSearch
- Hugging Face
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Langfuse FAQ
Common questions about Langfuse, answered from independent, dated evidence.
What is Langfuse?
A comprehensive observability and development platform that combines tracing, prompt management, evaluation, and experimentation, enabling teams to understand LLM behavior in production and ship improved applications with confidence It is indexed under MLOps & LLMOps Tools.
Source: https://langfuse.com/changelog/2025-08-08-openai-pricing-availability
Is Langfuse free to use?
Langfuse is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Paid editions are also offered: Core and Enterprise, priced on request. Pricing changes often, so verify at source before relying on it.
Source: https://langfuse.com/changelog/2025-08-08-openai-pricing-availability
What platforms does Langfuse support?
Langfuse supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://langfuse.com/changelog/2025-08-08-openai-pricing-availability
Can Langfuse be self-hosted?
Yes. Langfuse can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://langfuse.com/changelog/2025-08-08-openai-pricing-availability
What does Langfuse integrate with?
We have confirmed 21 integrations for Langfuse, including LangChain, Vercel AI SDK, LiteLLM, Pydantic AI, Google ADK, CrewAI, LiveKit and Haystack, plus 13 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://langfuse.com/changelog/2025-08-08-openai-pricing-availability
What security certifications does Langfuse have?
We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Langfuse. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Langfuse not holding them. Always confirm compliance directly before you rely on it.
Source: https://langfuse.com
Is Langfuse open source?
Yes. Langfuse is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Langfuse alternatives
Other mlops & llmops tools we track, ranked by the same independent score.
- PortkeyAn API gateway for routing requests across thousands of language models with built-in safety guardrailshigh · 76%
- LangChainA platform for building, testing, and operating AI agents at scalemedium · 70%
- BasetenAn inference platform for deploying and running AI models at scalemedium · 73%
- Together AICloud platform for deploying and running open-source AI models with optimized inferencemedium · 61%
- OllamaA platform for running open-source language models locally or in the cloud with cost-effective access.medium · 57%
- RayDistributed computing infrastructure for scaling machine learning applicationsmedium · 65%
Compare Langfuse
Side by side against other mlops & llmops tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Langfuse, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 88 | 0.14 | 12.0 | ✓ |
| Capabilities | 100 | 0.07 | 7.0 | ✓ |
| Development activity | 63 | 0.09 | 5.9 | ✓ |
| Security posture | 80 | 0.06 | 5.0 | ✓ |
| Integrations | 58 | 0.08 | 4.5 | ✓ |
| Stars | 86 | 0.03 | 2.2 | ✓ |
| Dependent projects | 0 | 0.06 | 0.0 | ✓ |
| Release cadence | 0 | 0.05 | 0.0 | - |
| Security score | 0 | 0.04 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-09-11 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 7 items | mediumsource · 2026-09-10 · 62% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Role: observability · Evaluation: Yes · Managed cloud: Yes · Model serving: No · Pricing model: free_open_source · Self hostable: Yes | mediumsource · 2026-09-11 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 100 | mediumsource · 2026-09-11 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | TypeScript | highsource · 2026-09-11 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-09-11 · 85% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-09-11 · 75% |
Pricing
Release
| Attribute | Value | Evidence |
|---|---|---|
| History | 20 items | mediumsource · 2026-09-11 · 70% |
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-01 · 60% |
Security
| Attribute | Value | Evidence |
|---|---|---|
| Gdpr | Yes | highsource · 2026-08-01 · 75% |
| Hipaa | Yes | highsource · 2026-08-01 · 75% |
| Iso27001 | Yes | lowsource · 2026-09-11 · 48% |
| Soc2 | Yes | lowsource · 2026-09-11 · 48% |
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=langfuse-k8s%2Flangfuse&per_page=100 · Last 12m: 0 | highsource · 2026-09-11 · 90% |
| Trust center | https://langfuse.com/docs/security-and-guardrails | mediumsource · 2026-09-11 · 60% |
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