Staxly

LangSmith vs Deepgram

LLM observability, testing & evaluation — by LangChain
vs. Enterprise-grade speech-to-text + voice agents — Nova + Flux + Aura TTS

LangSmith websiteDeepgram website

Pricing tiers

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
LangSmith website

Deepgram

Pay-as-you-go
$200 free credit. No minimums, no expiration.
$0 base (usage-based)
Growth
Starting $4K+/year prepay. Up to 20% savings.
$4000/mo
Enterprise
Custom. Data residency, dedicated support, on-prem option.
Custom
Deepgram website

Free-tier quotas head-to-head

Comparing developer on LangSmith vs payg on Deepgram.

MetricLangSmithDeepgram
No overlapping quota metrics for these tiers.

Features

LangSmith · 14 features

  • AlertsThreshold alerts on latency, cost, eval metrics.
  • Annotation QueuesHuman-review workflows for trace quality rating.
  • Custom DashboardsAggregate metrics dashboards per project/tag.
  • DatasetsCollect examples → use as eval sets or training data.
  • EvaluationsLLM-as-judge, embedding similarity, custom Python evaluators, offline batch eval
  • LangChain IntegrationAuto-trace any LangChain/LangGraph run with env var.
  • LangGraph IntegrationFirst-class trace + eval for LangGraph agents.
  • LLM TracingAutomatic trace every LLM call + tool call + chain step.
  • OpenTelemetry ExportExport traces as OTLP to Datadog/Honeycomb/etc.
  • PlaygroundTest prompts + models inline before deploying.
  • Prompt CanvasVisual prompt editor with live test + eval.
  • Prompt HubPublic + private prompt library with versioning.
  • Self-Hosted (Enterprise)Docker + k8s deployment in your infra.
  • Threads + SessionsGroup traces into conversational sessions.

Deepgram · 15 features

  • Aura TTSLow-latency text-to-speech (<250ms).
  • Data ResidencyEU / US / custom regions.
  • DiarizationSpeaker identification.
  • Intent DetectionDetect speaker intents automatically.
  • Keyterm PromptingBoost accuracy for proper nouns + domain terms.
  • Language DetectionAuto-detect spoken language.
  • On-Prem DeploymentEnterprise: run Deepgram in your infra.
  • PII RedactionAuto-redact sensitive info.
  • Pre-recorded STTTranscribe audio/video files.
  • Sentiment AnalysisPer-segment sentiment scores.
  • Smart FormatNumbers, dates, times auto-formatted.
  • Streaming STTRealtime WebSocket-based transcription.
  • SummarizationAutomatic transcript summaries.
  • Topic DetectionAuto-extract conversation topics.
  • Voice Agent APIUnified STT + LLM + TTS for voice bots.

Developer interfaces

KindLangSmithDeepgram
CLILangSmith CLI
SDKlangsmith-js, langsmith-pythondeepgram-dotnet-sdk, deepgram-go-sdk, deepgram-rust-sdk, @deepgram/sdk (Node), deepgram-sdk (Python)
RESTLangSmith REST APIDeepgram REST API
MCPLangSmith MCP
OTHERLangSmith DashboardStreaming WebSocket, Voice Agent API
Staxly is an independent catalog of developer platforms. Some links to LangSmith and Deepgram 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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