Langfuse vs Kinde
Open-source LLM engineering platform — observability, prompts, evals
vs. Flexible authentication, user management, and feature flags
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
Kinde
Free
10,500 MAU included. MFA, B2B orgs, custom domain, 2 custom roles, 1 webhook, 2 environments.
Free
Pro
Unlimited webhooks, roles, feature flags, API keys. Remove Kinde branding. SOC 2 attestation.
$25/mo
Plus
Unlimited enterprise SSO, API scopes, org-owned M2M apps, 6 environments.
$75/mo
Scale
11 environments, custom domain per org, SCIM, MFA triggers, 30-day audit logs.
$250/mo
Enterprise
Custom. Dedicated infra option, volume discounts, custom SLAs.
Custom
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs free on Kinde.
| Metric | Langfuse | Kinde |
|---|---|---|
| custom roles | — | 2 roles |
| environments | — | 2 envs |
| feature flags | — | 10 flags |
| mau included | — | 10500 users/month |
| webhooks | — | 1 webhooks |
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.
Kinde · 14 features
- API Scopes — OAuth scopes for your APIs, enforced server-side (Plus+).
- B2B Organizations — Multi-tenant orgs with user roles, invitations, feature flags per org.
- Custom Domain — Host auth at auth.yourbrand.com. Free tier includes this.
- Enterprise SSO — SAML 2.0 + OIDC enterprise connections (Plus unlimited).
- Feature Flags — Built-in feature flags with per-user/org overrides. No separate service needed.
- Kinde AI — AI-assisted query and insights over your Kinde data.
- Kinde Billing (preview) — Built-in subscription billing linked to users/orgs. Stripe under the hood.
- Machine-to-Machine — Client credentials grant for service-to-service auth.
- Multi-Factor Auth — TOTP authenticator apps, SMS, email, passkey.
- Passwordless — Email code + passkey (WebAuthn).
- Roles & Permissions — RBAC with roles → permissions. Assigned per user or per organization.
- SCIM Provisioning — Directory provisioning from IdPs (Scale tier).
- Sign-in Widget — Hosted pages + themeable widget for login/signup. Customizable with CSS.
- Webhooks — Event webhooks: user.created/updated, organization events, MFA, etc.
Developer interfaces
| Kind | Langfuse | Kinde |
|---|---|---|
| SDK | langfuse-js, langfuse-python | Kinde Android / Kotlin, Kinde Flutter SDK, Kinde Go SDK, Kinde iOS / Swift, @kinde-oss/kinde-auth-nextjs, @kinde-oss/kinde-auth-react, @kinde-oss/kinde-nodejs-sdk, Kinde Python SDK |
| REST | Langfuse REST API | Kinde Management API |
| MCP | Langfuse MCP Server | Kinde MCP |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | — |
Staxly is an independent catalog of developer platforms. Outbound links to Langfuse and Kinde are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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