Langfuse
8.1#1 in ai agent observability toolsFrom $29 a monthFree planWebAPILinuxSelf-hosted
VisitLangfuse vs PromptFluent
PromptFluent
7.7#5 in prompt management softwareFrom $14 a monthFree planWebExtensionLinuxmacOS
VisitWhat both publish
| Fact | Langfuse | PromptFluent |
|---|---|---|
| Product | Langfuse is an open-source AI engineering platform that helps teams collaboratively debug, analyze, and iterate on AI agent applications. | PromptFluent describes itself as an enterprise AI execution management and governance platform for prompts, workflows, standards, approvals, and execution intelligence. |
| Rating on G2 | 4.5 out of 5 from 1 review | 0.0 out of 5 from 0 reviews; G2 says there are not enough reviews to provide buying insight. |
| Security | Langfuse reports annual SOC 2 Type II and ISO 27001 audits, external penetration tests, encryption, access controls, GDPR compliance, and a HIPAA-ready region. | The security page says customer data is encrypted with AES-256 at rest and TLS 1.2 or higher in transit, and organization data is isolated with row-level security. |
Langfuse plans
- HobbyFree
- HobbyFree
- Core$29 a month
- Core$29 a month
- Pro$199 a month
- Pro$199 a month
PromptFluent plans
- FreeFree
- Magic on Demand – 10 scans$12, paid once
- Magic on Demand — 10 scans$12, paid once
- Wand Boost$14 a month
- Magic on Demand — 25 scans$25, paid once
- Pro$25 a month
Pick Langfuse if…
Langfuse suits teams building AI agent applications that need tracing, prompt management, and evaluation tools. It also supports teams that want to self-host the core on their own infrastructure.
Pick PromptFluent if…
PromptFluent may suit enterprise leaders, marketing and growth teams, risk and compliance staff, agencies, founders, and individual power users who need shared prompt workflows and controls. Teams should note that Enterprise access is currently limited to a founding customer cohort.