Langfuse vs WhyLabs
Side-by-side comparison of framework coverage, pricing, capabilities, and target customers. Last verified recently.
https://aicompliancevendors.com/compare/langfuse-vs-whylabsLangfuse
Open Source LLM Engineering Platform
Langfuse is an open-source LLM observability platform that provides tracing, evaluations, prompt management, and analytics for debugging and improving LLM applications and agents. Key differentiators include model/framework-agnostic SDKs, OpenTelemetry compatibility, self-hosting option, and integrated workflow for observability, experiments, and human annotation. Typical buyers are AI engineering teams at startups to Fortune 50 companies developing production AI products. Notable: Acquired by ClickHouse in January 2026; supports compliance certifications like SOC 2 Type II, ISO 27001, GDPR, HIPAA eligible.
WhyLabs
The AI Observability Platform
WhyLabs provided an AI observability platform for monitoring machine learning models, data pipelines, and generative AI applications in real-time. Key differentiators included privacy-preserving data logging via open-source whylogs, LLM monitoring with langkit, drift detection, and low-latency threat detection without data movement. Targeted ML engineers and data scientists at Fortune 100 companies to AI startups in regulated sectors like financial-services and healthcare. Company discontinued commercial operations in 2025 following reported acquisition by Apple, open-sourcing its platform; tools remain available on GitHub.
What the data shows
We haven't published an editorial verdict on this pair yet. The comparison below is built from public vendor materials and our taxonomy — no editorialized ranking.
- Shared framework coverage: None documented in common.
- Only WhyLabs covers: SOC 2
- Shared capabilities: 3 of 8 listed.
Want our editorial take? Email the editors or read our methodology.
At a glance
| Attribute | Langfuse | WhyLabs |
|---|---|---|
| Founded | 2023 | 2019 |
| Headquarters | Berlin, Germany | Seattle, US |
| Employees | 11-50 | 11-50 |
| Funding | $4M total (Seed, November 2023) | $14M total (Series A, 2021) |
| Pricing | Contact for pricing | Contact for pricing |
| Website | Visit site | Visit site |
Framework coverage
| Framework | Langfuse | WhyLabs |
|---|---|---|
| SOC 2 | — | Certified |
Capabilities
| Capability | Langfuse | WhyLabs |
|---|---|---|
| AI Model Inventory | — | ✓ |
| Agent Tracing | ✓ | — |
| Bias & Fairness Testing | — | ✓ |
| Drift Detection | ✓ | ✓ |
| LLM Evaluation | ✓ | ✓ |
| LLM Guardrails & Content Filtering | — | ✓ |
| Model Monitoring | ✓ | ✓ |
| Prompt Management | ✓ | — |
Industries served
Langfuse
- None listed
WhyLabs
- Financial Services
- Healthcare
- Retail & E-commerce
- Manufacturing
Integrations
Langfuse
- OpenAI API
- Anthropic API
- LangChain
- LlamaIndex
- Vercel AI SDK
- LiteLLM
- CrewAI
- Amazon Bedrock
- Azure OpenAI Service
- Mistral AI
- Groq
- GitHub
WhyLabs
- PyTorch
- TensorFlow
- scikit-learn
- Apache Spark
- Ray
- OpenAI API
Frequently asked
What is the difference between Langfuse and WhyLabs?+
Langfuse is Open Source LLM Engineering Platform; WhyLabs is The AI Observability Platform. The full side-by-side covers framework coverage (0 shared, 0 unique to Langfuse, 1 unique to WhyLabs), pricing model, and capability overlap.
How do Langfuse and WhyLabs pricing compare?+
Langfuse: Hobby free forever; Core $29/mo, Pro $199/mo, Enterprise $2499/mo; all include 100k units/mo (50k for Hobby), additional usage $8/100k units decreasing with volume; discounts for startups/OSS/EDU. WhyLabs: Free tier for 1 model; $100/month for 2 models, scaling per model up to enterprise at $8,333/month (AWS Marketplace listing).
Which AI compliance frameworks do Langfuse and WhyLabs both support?+
There is no published overlap in framework coverage between Langfuse and WhyLabs based on each vendor's own materials.
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Editorial independence: This comparison is free and was not paid for by either vendor. See our methodology.