vendor · observability
Arize AI vs Langfuse
49 fields both were evaluated on, 28 of them different — including where one discloses something the other does not. Every value links to the document it came from. 21 further fields are disclosed by neither and are listed at the end rather than tabled.
Assurance
| Field | Arize AI | Langfuse |
|---|---|---|
| Audit trail· | “Trace everything from the team who founded OpenInference, the leading open standard for GenAI observability.”arize.com · checked Aug 8, 2026 | “Hierarchical traces capture every LLM call, tool invocation, and retrieval step.”langfuse.com · checked Aug 11, 2026 |
| Permission scopes· | States internal risk is mitigated through a least-privilege access policy. “internal risks are mitigated through a least-privileges policy, security quality gates and other safeguards”arize.com · checked Sep 5, 2026 | Data is scoped per-project with project-scoped API keys, and requests are authorized via role-based access control before queries run. “All product data is scoped to a project. Every record is associated with a projectId , API keys are project-scoped, and authenticated requests are authorized through RBAC before queries are made”langfuse.com · checked Sep 2, 2026 |
| Compliance certifications· | “Arize supports flexible deployment options and is certified to leading security and compliance standards, including SOC 2 Type II, ISO 27001, PCI DSS, HIPAA, and GDPR.”arize.com · checked Aug 8, 2026 | SOC 2 Type II, ISO 27001, EU & US data regions, a HIPAA-ready region, GDPR; government hardening described as coming soon “SOC 2 Type II & ISO 27001 EU & US Data Regions HIPAA-ready region Hardening for Gov (soon) GDPR”langfuse.com · checked Sep 12, 2026 |
| Regulatory alignment· | “Arize supports flexible deployment options and is certified to leading security and compliance standards, including SOC 2 Type II, ISO 27001, PCI DSS, HIPAA, and GDPR.”arize.com · checked Aug 8, 2026 | Langfuse states it is GDPR compliant with data retention, masking and deletion capabilities “Langfuse is GDPR compliant, and offers data retention, data masking and data deletion capabilities to manage the processing of personal data”langfuse.com · checked Aug 26, 2026 |
| SLA terms· | no public information arize.com · checked Aug 18, 2026 | |
| Evaluation coverage· | “The most comprehensive eval framework in the market. Run span, trace, and session evals that run at scale.”arize.com · checked Aug 8, 2026 | no public information langfuse.com · checked Aug 11, 2026 |
| Self-reported performance· | 1 trillion spans processed, 1 billion evals/year, 5 million downloads/month (self-reported) “Alyx 1 Trillion spans processed 1 Billion evals per year 5 Million downloads per month”arize.com · checked Aug 18, 2026 | Vendor claims Langfuse v4 delivers up to 165x faster performance (self-reported). “Langfuse v4 is here: real-time, up to 165× faster”langfuse.com · checked Aug 10, 2026 |
| Service type· | “Agent Observability, Evaluation & Improvement Platform | Arize AI”arize.com · checked Aug 8, 2026 | |
| Client types· |
Safety
| Field | Arize AI | Langfuse |
|---|---|---|
| Red teaming· | Arize runs a year-round public bug bounty program via Yogosha “We host a year-round bug bounty program facilitated by Yogosha.”arize.com · checked Aug 29, 2026 | no public information langfuse.com · checked Aug 11, 2026 |
| Safety policy· | no public information langfuse.com · checked Aug 11, 2026 | |
| Incident reporting· | Publishes a vulnerability-disclosure channel ("Report an Issue") for responsible disclosure of security issues. “committed to maintaining a secure platform and appreciate responsible disclosure of security issues”arize.com · checked Sep 5, 2026 | Vulnerability disclosure runs through Bugcrowd, plus a whistleblowing channel. “Reporting: Clear channels for responsible disclosure through Bugcrowd and Whistleblowing”langfuse.com · checked Sep 2, 2026 |
| Third-party evaluations· | no public information arize.com · checked Aug 8, 2026 | Undergoes annual third-party penetration testing in addition to its SOC 2 Type II and ISO 27001 audits. “is covered by SOC 2 Type II and ISO 27001 audits, and undergoes annual third-party penetration tests”langfuse.com · checked Sep 2, 2026 |
| Data handling· | “Your data stays under your control. Arize supports flexible deployment options and is certified to leading security and compliance standards, including SOC 2 Type II, ISO 27001, PCI DSS, HIPAA, and GDPR.”arize.com · checked Aug 8, 2026 | Langfuse states it is GDPR compliant with data retention, masking and deletion capabilities “Langfuse is GDPR compliant, and offers data retention, data masking and data deletion capabilities to manage the processing of personal data”langfuse.com · checked Aug 26, 2026 |
Practicality
| Field | Arize AI | Langfuse |
|---|---|---|
| Pricing model· | no public information arize.com · checked Sep 2, 2026 | Usage-based free tier (50k observations/month) with no credit card required; paid tiers not detailed on this page “Free tier: 50k observations/month . No credit card required.”langfuse.com · checked Aug 11, 2026 |
| Price point· | no public information arize.com · checked Aug 8, 2026 | Free tier: 50k observations/month, no credit card required “Free tier: 50k observations/month . No credit card required.”langfuse.com · checked Aug 11, 2026 |
| Availability· | no public information arize.com · checked Aug 8, 2026 | Generally available: a fully managed multi-tenant cloud service, actively used at scale. “Langfuse Cloud is a fully managed, multi-tenant SaaS deployment”langfuse.com · checked Sep 2, 2026 |
| Deployment options· | no public information arize.com · checked Aug 8, 2026 | Self-hosts at scale via Docker Compose, Kubernetes (Helm), or Terraform on AWS/GCP/Azure “Self-host at scale Docker Compose Kubernetes (Helm) AWS (Terraform) GCP (Terraform) Azure (Terraform)”langfuse.com · checked Aug 11, 2026 |
| Integrations· | “Arize integrates with 40+ models, frameworks, and AI tools , including OpenAI, Anthropic, Google, Amazon Bedrock, LangGraph, LangChain, LlamaIndex, CrewAI, OpenAI Agents SDK, DSPy, and more.”arize.com · checked Aug 8, 2026 | 100+ integrations across languages, agent frameworks, and model providers “Additionally, 100+ integrations make getting started even easier.”langfuse.com · checked Aug 11, 2026 |
| Supported regions· | “works across Google Cloud, AWS, Azure, and self-hosted environments.”arize.com · checked Aug 8, 2026 | EU and US data regions, with a HIPAA-ready region “EU & US Data Regions HIPAA-ready region”langfuse.com · checked Aug 11, 2026 |
Ecosystem
| Field | Arize AI | Langfuse |
|---|---|---|
| Protocols supported· | “Built on OpenInference and OpenTelemetry standards, Arize works across Google Cloud, AWS, Azure, and self-hosted environments.”arize.com · checked Aug 8, 2026 | Ships a Platform MCP Server for IDE agents and is OpenTelemetry-native “Platform MCP Server Structured access for IDE agents to manage prompts, query traces, and use Langfuse data.”langfuse.com · checked Aug 11, 2026 |
| API access· | no public information arize.com · checked Aug 8, 2026 | |
| Open source· | no public information arize.com · checked Aug 8, 2026 |
Impact
| Field | Arize AI | Langfuse |
|---|---|---|
| User base· | Vendor-published aggregate volumes: 1 Trillion spans processed, 1 Billion evals per year, 5 Million downloads per month. NOTE: the earlier capture read "1 Billion evals per month" and "1 Trillion spans per month"; the vendor now states evals per YEAR and gives no period for spans. The prior stored value overstated the eval figure twelvefold. “Alyx 1 Trillion spans processed 1 Billion evals per year 5 Million downloads per month”arize.com · checked Aug 18, 2026 | Used by 21 of Fortune 50; 90B+ observations/month; 100,000+ engineers building on Langfuse “Used by 21 of Fortune 50 90B+ observations/month 100,000+ engineers building on Langfuse”langfuse.com · checked Sep 3, 2026 |
| Deployment scale· | no public information arize.com · checked Aug 18, 2026 | Processes over 90 billion observations per month, up from a previously reported 10+ billion. “90B+ observations/month”langfuse.com · checked Sep 3, 2026 |
| Target sectors· | “Teams use Arize to understand how their AI agents and applications behave, measure quality with evaluations, monitor production performance, and continuously improve prompts, models, and workflows.”arize.com · checked Aug 8, 2026 | no public information langfuse.com · checked Aug 11, 2026 |
| High-risk domains· | “Teams use Arize to understand how their AI agents and applications behave, measure quality with evaluations, monitor production performance, and continuously improve prompts, models, and workflows.”arize.com · checked Aug 8, 2026 | no public information langfuse.com · checked Aug 11, 2026 |
| Market recognition· | Customer testimonials from TripAdvisor and Wayfair (both named on the vendor homepage) “"For anybody who is building AI products or AI solutions, Arize AX is a must for your production system." Rahul Todkar Head of Data and AI | TripAdvisor”arize.com · checked Aug 18, 2026 | Vendor states its platform is used by 21 of the Fortune 50 companies. “Used by 21 of Fortune 50”langfuse.com · checked Aug 10, 2026 |
Disclosed by neither
Both Arize AI and Langfuse publish nothing on these 21 fields. That is a finding about the category rather than a difference between them, so it is recorded here instead of as 21 identical table rows. Each is shown with its source check on the individual profiles.
- Documented incidents
- Support model
- Marketplace presence
- Safety evaluations
- Usage restrictions
- Model or system card
- Insurance available
- Own liability cover
- Insurance carriers
- Coverage limits
- Indemnification
- Liability cap
- Tamper-evident log
- Explainability
- Runtime governance
- Outcome-based pricing
- Settlement mechanism
- Asset custody
- Dispute process
- Regulatory status
- Underwriting backing
Questions
- How do Arize AI and Langfuse compare on user base?
- Arize AI: Vendor-published aggregate volumes: 1 Trillion spans processed, 1 Billion evals per year, 5 Million downloads per month. NOTE: the earlier capture read "1 Billion evals per month" and "1 Trillion spans per month"; the vendor now states evals per YEAR and gives no period for spans. The prior stored value overstated the eval figure twelvefold.. Langfuse: Used by 21 of Fortune 50; 90B+ observations/month; 100,000+ engineers building on Langfuse.
- How do Arize AI and Langfuse compare on deployment scale?
- Arize AI: no public information disclosed. Langfuse: Processes over 90 billion observations per month, up from a previously reported 10+ billion..
- How do Arize AI and Langfuse compare on market recognition?
- Arize AI: Customer testimonials from TripAdvisor and Wayfair (both named on the vendor homepage). Langfuse: Vendor states its platform is used by 21 of the Fortune 50 companies..
- How do Arize AI and Langfuse compare on pricing model?
- Arize AI: no public information disclosed. Langfuse: Usage-based free tier (50k observations/month) with no credit card required; paid tiers not detailed on this page.
- How do Arize AI and Langfuse compare on price point?
- Arize AI: no public information disclosed. Langfuse: Free tier: 50k observations/month, no credit card required.
- How do Arize AI and Langfuse compare on availability?
- Arize AI: no public information disclosed. Langfuse: Generally available: a fully managed multi-tenant cloud service, actively used at scale..