Langfuse vs Linear
Open-source LLM engineering platform — observability, prompts, evals
vs. The issue tracking tool built for modern software teams
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
Linear
Free
$0. Unlimited members. 250 issues. Unlimited file uploads. 2 teams. Slack/GitHub integration.
Free
Basic
$8/user/mo annual ($10/mo monthly). Unlimited issues, 5 teams, admin roles, API access.
$8/mo
Business
$14/user/mo annual. Unlimited teams, Linear Insights, private teams, SSO (SAML, OIDC).
$14/mo
Enterprise
Custom. SAML, SCIM, audit logs, advanced security, HIPAA-eligible, dedicated CSM.
Custom
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs free on Linear.
| Metric | Langfuse | Linear |
|---|---|---|
| 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.
Linear · 16 features
- Asks — Slack → Linear issue from messages.
- Cycles — Auto-recurring sprints.
- Desktop App — Native macOS, Windows, Linux.
- Documents — Markdown-style shared docs.
- GitHub Sync — Auto-link PRs/commits to issues.
- GraphQL API — Full-featured public API.
- Initiatives — Multi-project strategic groupings.
- iOS + Android Apps — Native mobile clients.
- Issues — Fast CRUD + keyboard shortcuts.
- Labels + Custom Views — Filter + save views.
- Linear Insights — Built-in analytics.
- Parent + Subissues — Hierarchical task breakdown.
- Projects — Milestones + docs + updates.
- Roadmaps — Timeline view with dependencies.
- Triage — Inbox for unassigned issues.
- TypeScript SDK — @linear/sdk generated from GraphQL.
Developer interfaces
| Kind | Langfuse | Linear |
|---|---|---|
| SDK | langfuse-js, langfuse-python | @linear/sdk |
| REST | Langfuse REST API | — |
| GRAPHQL | — | Linear GraphQL API |
| MCP | Langfuse MCP Server | Linear MCP |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | Linear Desktop App, Linear Webhooks, OAuth 2.0 |
Staxly is an independent catalog of developer platforms. Some links to Langfuse and Linear 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.
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