Langfuse vs ElevenLabs
Open-source LLM engineering platform — observability, prompts, evals
vs. Best-in-class AI text-to-speech + voice cloning + Conversational AI
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
ElevenLabs
Free
10k credits/month. No voice cloning. Limited API.
Free
Starter
$6/mo. 30k credits. Instant voice cloning. Limited API.
$6/mo
Creator
$11/mo (first month 50% off). 121k credits. Professional cloning. Full API.
$11/mo
Pro
$99/mo. 600k credits. 44.1 kHz PCM API. Professional cloning.
$99/mo
Scale
$299/mo. 1.8M credits. 3 professional voice clones.
$299/mo
Business
$990/mo. 6M credits. 10 pro clones. Low-latency TTS API.
$990/mo
Enterprise
Custom. Unlimited pro clones + full access.
Custom
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs free on ElevenLabs.
| Metric | Langfuse | ElevenLabs |
|---|---|---|
| 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.
ElevenLabs · 13 features
- Conversational AI — Voice agents with LLM orchestration + tools.
- Dubbing Studio — Auto-dub video to target languages with lip-sync.
- Projects — Long-form narration workflow — books, podcasts.
- Realtime Streaming — Low-latency TTS streaming via WebSocket.
- Scribe (STT) — High-accuracy speech-to-text with speaker diarization.
- Sound Effects — AI-generated SFX from text prompts.
- Text to Sound — Generate music + sound from text.
- Text-to-Speech — Studio-quality TTS across 29 languages with emotion control.
- Voice Changer — Transform one voice into another preserving delivery.
- Voice Cloning — Instant (short sample) + Professional (30 min +) voice cloning.
- Voice Design — Design voices from text descriptions.
- Voice Library — 3,000+ community voices. License per-voice.
- Voiceover Studio — Multi-character voiceover timeline.
Developer interfaces
| Kind | Langfuse | ElevenLabs |
|---|---|---|
| SDK | langfuse-js, langfuse-python | elevenlabs (Node), elevenlabs (Python) |
| REST | Langfuse REST API | ElevenLabs REST API |
| MCP | Langfuse MCP Server | ElevenLabs MCP |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | Webhooks, WebSocket Streaming |
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