Fiddler AIThe Control Plane for Enterprise AI Agents
vs
LangfuseOpen Source Agent Evals & Observability
Comparison · MLOps Platforms · weekly run Nov 2
Fiddler AI vs Langfuse
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Fiddler AI is the stronger AI pick in MLOps Platforms: it has a visibility score of 0.6 versus 0.3 for Langfuse.
Choose Fiddler AI if…
- You want the brand AI engines rank higher (0.6 vs 0.3)
- You want a lower entry price ($0.002 vs $29)
- You need HIPAA coverage
- Integrates with observability and logging tools
Choose Langfuse if…
- AI answers describe it more positively (50% vs 0% positive)
- You need ISO 27001 or HIPAA-ready region or GDPR coverage
- Discounted cloud pricing for qualifying early-stage startups
- Well suited to evaluating and debugging LLM or agent behavior
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Fiddler AI | Langfuse |
|---|---|---|
| Visibility score | 0.6% | 0.3% |
| Change vs last week | New | New |
| Rank in MLOps Platforms | #44 | #51 |
| Share of voice | 0.3% | 0.2% |
| Mentions this run | 2 | 1 |
| Positive in AI answers | 0% | 50% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Fiddler AI 0pp · Langfuse 0pp over 0 weekly runs.
Engine by engine
Fiddler AI leads on 1 of 3 engines
ChatGPT
AI Mode
Perplexity
Fiddler AILangfuse
Head to head in AI answers
0 engine answers name both brands
0Fiddler AI ranked higher
0Langfuse ranked higher
Features, pricing & fit
| Dimension | Fiddler AI | Langfuse |
|---|---|---|
| Pricing model | Usage-based | Usage-based |
| Entry price | Free; paid from $0.002 / mo | Free; paid from $29 / mo |
| Free plan | Yes | Yes |
| Deployment | SaaS, VPC, or on-premises | Langfuse Cloud in US, EU, Japan and HIPAA regions, or self-hosted under the MIT license |
| Integrations | 100+ | 100+ |
| Compliance | SOC 2 Type II, HIPAA | SOC 2 Type II, ISO 27001, HIPAA-ready region, GDPR |
| Support | White-glove support with dedicated communication channels, Named Customer Success Manager on the Enterprise plan | 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 | 2018 | — |
| Headquarters | Palo Alto, California, United States | — |
| Employees | 51–200 | — |
| Funding | Series B extension · $100M raised | Seed · $4M raised |
| Best for | Enterprises deploying AI agents and predictive models, especially highly regulated industries such as financial services, healthcare, insurance and government. | 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
Fiddler AI
- Integrates with observability and logging tools
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, “Fiddler AI vs Langfuse”, https://slateindex.ai/compare/fiddler-ai-vs-langfuse, data of Nov 2, 2026. Licence: CC BY 4.0.