Langfuse vs Mixpanel
Open-source LLM engineering platform — observability, prompts, evals
vs. Enterprise product analytics — behavioral cohorts + funnels + A/B
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
Mixpanel
Free
1M events/month cap. Unlimited seats, 5 saved reports, 10K session replays/month. No credit card.
Free
Growth
Usage-based. First 1M events free, then $0.28 per 1K events (volume discounts). 20K session replays/mo.
$0 base (usage-based)
Startup Program
First year free for <5-year companies with <$8M funding.
$0 base (usage-based)
Enterprise
Custom. Unlimited events. Experiments + feature flags. HIPAA, SOC 2 Type II. 24/7 support.
Custom
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs free on Mixpanel.
| Metric | Langfuse | Mixpanel |
|---|---|---|
| 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.
Mixpanel · 13 features
- Alerts — Anomaly + threshold alerts on metrics.
- Campaign Reporting — UTM + multi-touch attribution reporting.
- Cohorts — Dynamic user segments from event behavior + properties.
- Dashboards — Multi-report dashboards with slices.
- Data Governance — Property schemas, approvals, lineage. Enterprise only.
- Data Warehouse Connectors — Sync from/to Snowflake, BigQuery, Databricks, Redshift.
- Experiments (A/B) — Feature-flag-backed experiments. Enterprise only.
- Feature Flags — Targeting + rollouts. Enterprise tier.
- Flows — User path visualization (where do users go).
- Funnels — Conversion step-by-step analysis with drop-off + time-to-convert.
- Insights (Reports) — Ad-hoc exploration with filters, breakdowns, math operators.
- Retention — N-day retention curves segmented by cohort.
- Session Replay — Record + watch user sessions tied to events.
Developer interfaces
| Kind | Langfuse | Mixpanel |
|---|---|---|
| SDK | langfuse-js, langfuse-python | mixpanel-android, mixpanel-js (browser), mixpanel-node, mixpanel-python, mixpanel-react-native, Mixpanel-swift (iOS) |
| REST | Langfuse REST API | Mixpanel Ingestion API, Query API |
| MCP | Langfuse MCP Server | — |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | — |
Staxly is an independent catalog of developer platforms. Outbound links to Langfuse and Mixpanel are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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