ElevenLabs vs LangSmith
Best-in-class AI text-to-speech + voice cloning + Conversational AI
vs. LLM observability, testing & evaluation — by LangChain
Pricing tiers
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
LangSmith
Developer (Free)
Free forever. 5,000 traces/month. 14-day retention. 1 seat. Basic evaluations.
Free
Plus
$39/seat/month. 10k base traces included ($2.50 per 1k overage). Full evaluations, custom dashboards, email support.
$39/mo
Enterprise
Custom. Self-host option, SSO, custom retention, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing free on ElevenLabs vs developer on LangSmith.
| Metric | ElevenLabs | LangSmith |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
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.
LangSmith · 14 features
- Alerts — Threshold alerts on latency, cost, eval metrics.
- Annotation Queues — Human-review workflows for trace quality rating.
- Custom Dashboards — Aggregate metrics dashboards per project/tag.
- Datasets — Collect examples → use as eval sets or training data.
- Evaluations — LLM-as-judge, embedding similarity, custom Python evaluators, offline batch eval…
- LangChain Integration — Auto-trace any LangChain/LangGraph run with env var.
- LangGraph Integration — First-class trace + eval for LangGraph agents.
- LLM Tracing — Automatic trace every LLM call + tool call + chain step.
- OpenTelemetry Export — Export traces as OTLP to Datadog/Honeycomb/etc.
- Playground — Test prompts + models inline before deploying.
- Prompt Canvas — Visual prompt editor with live test + eval.
- Prompt Hub — Public + private prompt library with versioning.
- Self-Hosted (Enterprise) — Docker + k8s deployment in your infra.
- Threads + Sessions — Group traces into conversational sessions.
Developer interfaces
| Kind | ElevenLabs | LangSmith |
|---|---|---|
| CLI | — | LangSmith CLI |
| SDK | elevenlabs (Node), elevenlabs (Python) | langsmith-js, langsmith-python |
| REST | ElevenLabs REST API | LangSmith REST API |
| MCP | ElevenLabs MCP | LangSmith MCP |
| OTHER | Webhooks, WebSocket Streaming | LangSmith Dashboard |
Staxly is an independent catalog of developer platforms. Outbound links to ElevenLabs and LangSmith are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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