Langfuse vs Infisical
Open-source LLM engineering platform — observability, prompts, evals
vs. Open-source secrets, PKI and SSH — self-hostable Doppler/Vault alternative
Pricing tiers
Langfuse
Hobby (Cloud Free)
Free. 50k units/month included. 30 days data access. 2 users. Community support.
Free
Self-Hosted (OSS)
MIT-licensed. Docker Compose or Kubernetes deployment. Unlimited.
$0 base (usage-based)
Core
$29/month. 100k units included ($8 per 100k overage). 90 days retention. Unlimited users. In-app support.
$29/mo
Pro
$199/month. 100k units included + same overage. 3 YEARS retention. Unlimited annotation queues. High rate limits.
$199/mo
Teams Add-on
+$300/month. Adds Enterprise SSO + fine-grained RBAC + dedicated Slack support to Pro.
$300/mo
Enterprise
$2,499/month. Everything + custom rate limits, uptime SLA, dedicated support engineer. Yearly options.
$2499/mo
Infisical
Free (Cloud)
$0. Unlimited users. 5 projects. 30-day audit. Community support.
Free
Self-Host CE (OSS)
Free forever. MIT license. Core features free. Docker Compose.
$0 base (usage-based)
Pro
$18/user/mo. Unlimited projects, secret rotation, dynamic secrets, 90-day audit, Slack alerts.
$18/mo
Enterprise
Custom. SAML, SCIM, SLA, dedicated deploy, HIPAA-ready, audit 1yr+.
Custom
Self-Host EE (BSL)
Custom. BSL-licensed enterprise features for self-hosted deploys.
Custom
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs free on Infisical.
| Metric | Langfuse | Infisical |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Langfuse · 16 features
- Annotation Queues — Human reviewers rate traces. Unlimited on Pro+.
- Dashboards — Aggregate metrics, cost, quality across projects.
- Datasets — Curate test sets from production traces. Run experiments.
- EU Cloud Region — GDPR-compliant hosting in EU.
- Evaluations — LLM-as-judge, manual scores, custom model-graded evaluators.
- LLM Cost Tracking — Automatic cost calculation per provider/model.
- OpenTelemetry Native — OTel SDK → Langfuse endpoint works out of box.
- Playground — Test prompts + models + variables live.
- Prompt Management — Version, tag, label prompts. Reference from code by label.
- Public API — Full REST API for ingest, query, prompt management.
- Python @observe decorator — One-line decorator to trace any function.
- Self-Hosting — Docker Compose + k8s Helm chart.
- Sessions — Group related traces (conversations, agent runs).
- Tracing — Capture every LLM call, tool call, nested span with inputs/outputs/cost.
- Users Tracking — Segment traces by user ID, track per-user cost.
- Webhooks — Subscribe to trace completion events.
Infisical · 18 features
- Approval Policies — PR-style approvals.
- Audit Log — Full activity trail.
- Dynamic Secrets — Generate on-demand creds.
- E2E Encryption — Optional zero-knowledge mode.
- Environments — Multi-env (dev/staging/prod).
- Infisical Agent — Sidecar for secret injection.
- Infisical CLI — Command-line access.
- Kubernetes Operator — Native K8s controller.
- PKI (Certificates) — Private CA + cert lifecycle.
- RBAC — Roles + permissions.
- SCIM — User provisioning.
- Secret Rotation — Auto-rotate keys.
- Secrets Management — Core secret storage.
- Secret Sync — Sync to cloud/hosting.
- Self-Host (CE + EE) — Docker / Helm / AMI.
- SSH — Ephemeral SSH access.
- SSO (SAML) — Enterprise auth.
- Webhooks — Change events.
Developer interfaces
| Kind | Langfuse | Infisical |
|---|---|---|
| CLI | — | infisical CLI |
| SDK | langfuse-js, langfuse-python | infisical-python, @infisical/sdk |
| REST | Langfuse REST API | Infisical REST API |
| MCP | Langfuse MCP Server | — |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | Infisical Agent, Infisical Dashboard, Kubernetes Operator, Self-Host (Docker) |
Staxly is an independent catalog of developer platforms. Some links to Langfuse and Infisical may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
Want this comparison in your AI agent's context? Install the free Staxly MCP server.