These tools integrates with

VapivsLangGraph

Voice agent middleware for production phone and web agents versus Graph-based stateful agent orchestration

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Choose Vapi when…

  • •You're building phone or web voice agents with real-time conversation
  • •You need multi-provider LLM + TTS + STT routing in one platform
  • •You want production-grade call analytics and interruption handling

Choose LangGraph when…

  • •You need stateful, graph-based agent control flow
  • •Complex branching or retry logic is required
  • •You're building production agents that need observability

Side-by-side comparison

Field
Vapi
LangGraph
Category
Voice AI
Agent Frameworks
Type
Commercial
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Pay-as-you-go: $0.05/minEnterprise: Custom
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GitHub Stars
—
⭐ 8,000
Health
—
●80 — Active

Vapi

Full-stack platform for building, testing, and deploying voice AI agents. Handles real-time telephony, multi-provider LLM routing, interruption detection, and call analytics. Most-adopted voice agent infrastructure in production.

Website ↗

LangGraph

Build stateful multi-actor applications as directed graphs. Part of the LangChain ecosystem. Strong for complex agentic workflows.

Website ↗GitHub ↗

Shared Connections3 tools both integrate with

Retell AIElevenLabsDeepgram

Only Vapi (1)

LangGraph

Only LangGraph (22)

CursorCrewAILangSmithLiteLLMLlamaIndexLangfuseQdrantE2BpgvectorClaude Code

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See how Vapi and LangGraph fit into the bigger picture — 207 tools, 455 relationships, all mapped.

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