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Retell AI

Retell AI provides voice AI infrastructure for building conversational agents with low-latency turn detection, interruption handling, tool calling, knowledge bases, and conversation flows. The Retell SDK exposes a published OpenAPI spec covering agents, calls, voices, knowledge bases, conversation flows, batches, and chat agents.

1 APIs 0 Features
AIVoiceAgentsRealtimeConversational

APIs

Retell AI Platform API

REST API at https://api.retellai.com for managing agents, conversation flows, calls (phone and chat), voices, knowledge bases, retell LLM, batch calls, and call analyses. Auth i...

Event Specifications

Retell AI WebSocket APIs

AsyncAPI 2.6 description of Retell AI's publicly documented WebSocket surfaces. All events are sourced from the official Retell AI documentation (https://docs.retellai.com) and ...

ASYNCAPI

Resources

👥
GitHubOrganization
GitHubOrganization
🔗
LinkedIn
LinkedIn
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Website
Website
🔗
Documentation
Documentation
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OpenAPI
OpenAPI
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Plans
Plans
🔗
RateLimits
RateLimits
🔗
FinOps
FinOps
🔗
LLMsTxt
LLMsTxt

Sources

Raw ↑
aid: retell-ai
url: https://raw.githubusercontent.com/api-evangelist/retell-ai/refs/heads/main/apis.yml
name: Retell AI
kind: company
description: >-
  Retell AI provides voice AI infrastructure for building conversational agents with low-latency turn detection,
  interruption handling, tool calling, knowledge bases, and conversation flows. The Retell SDK exposes a published
  OpenAPI spec covering agents, calls, voices, knowledge bases, conversation flows, batches, and chat agents.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
  - AI
  - Voice
  - Agents
  - Realtime
  - Conversational
created: '2026-05-08'
modified: '2026-05-29'
specificationVersion: '0.19'
apis:
  - aid: retell-ai:platform
    name: Retell AI Platform API
    description: >-
      REST API at https://api.retellai.com for managing agents, conversation flows, calls (phone and chat), voices,
      knowledge bases, retell LLM, batch calls, and call analyses. Auth is bearer token. OpenAPI spec is published at
      https://docs.retellai.com/openapi.yaml.
    image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
    humanURL: https://docs.retellai.com/api-references
    baseURL: https://api.retellai.com
    tags:
      - Voice
      - Agents
      - Calls
      - Knowledge Base
      - Conversation Flow
    properties:
      - type: Documentation
        url: https://docs.retellai.com/api-references
      - type: OpenAPI
        url: openapi/retell-ai-openapi.yml
      - type: AsyncAPI
        url: asyncapi/retell-ai-asyncapi.yml
      - type: SignUp
        url: https://dashboard.retellai.com/
      - type: Pricing
        url: https://www.retellai.com/pricing
common:
  - type: GitHubOrganization
    url: https://github.com/RetellAI
  - type: LinkedIn
    url: https://www.linkedin.com/company/retellai
  - type: Website
    url: https://www.retellai.com/
  - type: Documentation
    url: https://docs.retellai.com/
  - type: OpenAPI
    url: openapi/retell-ai-openapi.yml
  - type: Plans
    url: plans/retell-ai-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/retell-ai-rate-limits.yml
  - type: FinOps
    url: finops/retell-ai-finops.yml
  - type: Integrations
    url: https://www.retellai.com/integrations
  - type: LLMsTxt
    url: https://docs.retellai.com/llms.txt
integrations:
  - name: Twillio
  - name: Vonage
  - name: Go High Level
  - name: n8n
  - name: HubSpot
  - name: Retell Integration
  - name: Unofficial Connector
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com