ArizeThe agent observability and evaluation platform.
vs
LangfuseOpen Source Agent Evals & Observability
Comparison · MLOps Platforms · weekly run Nov 2
Arize vs Langfuse
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Arize is the stronger AI pick in MLOps Platforms: it has a visibility score of 1.5 versus 0.3 for Langfuse.
Choose Arize if…
- You want the brand AI engines rank higher (1.5 vs 0.3)
- You need PCI DSS or HIPAA coverage
- Flat tiers pricing suits your budget better than usage-based
Choose Langfuse if…
- You want a lower entry price ($29 vs $50)
- You need more native integrations (100+ vs 40+)
- AI answers describe it more positively (50% vs 20% positive)
- You need HIPAA-ready region coverage
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Arize | Langfuse |
|---|---|---|
| Visibility score | 1.5% | 0.3% |
| Change vs last week | New | New |
| Rank in MLOps Platforms | #34 | #51 |
| Share of voice | 0.7% | 0.2% |
| Mentions this run | 5 | 1 |
| Positive in AI answers | 20% | 50% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Arize 0pp · Langfuse 0pp over 0 weekly runs.
Engine by engine
Arize leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
ArizeLangfuse
Head to head in AI answers
0 engine answers name both brands
0Arize ranked higher
0Langfuse ranked higher
Features, pricing & fit
| Dimension | Arize | Langfuse |
|---|---|---|
| Pricing model | Flat tiers | Usage-based |
| Entry price | Free; paid from $50 / mo | Free; paid from $29 / mo |
| Free plan | Yes | Yes |
| Deployment | SaaS, with self-hosted deployment on the Enterprise plan; Phoenix runs locally or self-hosted. | Langfuse Cloud in US, EU, Japan and HIPAA regions, or self-hosted under the MIT license |
| Integrations | 40+ | 100+ |
| Compliance | SOC 2 Type II, ISO 27001, PCI DSS, HIPAA, GDPR | SOC 2 Type II, ISO 27001, HIPAA-ready region, GDPR |
| Support | Community, Email, Dedicated support on Enterprise | Community support via GitHub, In-app support, Private Slack or MS Teams channel on Pro and Enterprise plans, Named lead support engineer on Enterprise plans |
| Founded | 2020 | — |
| Employees | 51–200 | — |
| Funding | Series B-1 extension · $131M raised | Seed · $4M raised |
| Best for | AI engineering teams building and running production AI agents and LLM applications who need observability and evaluations. | Engineering teams building LLM applications and AI agents that want open-source, self-hostable tracing and evaluation |
Plans side by side
Pros and cons
Themes from the AI answers that mention each brand
Arize
Profile in progress.
Langfuse
- Discounted cloud pricing for qualifying early-stage startups
- Well suited to evaluating and debugging LLM or agent behavior
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Arize vs Langfuse”, https://slateindex.ai/compare/arize-vs-langfuse, data of Nov 2, 2026. Licence: CC BY 4.0.