Hume AI vs Vapi

Comparing the features of Hume AI to Vapi

Feature
Hume AI
Vapi

Capability Features

A/B Experiments
AI Guardrails
API Access
API Configurability
4.2K+ configuration points
API-First Architecture
Automated Test Execution
Automatic Scalability
Millions of calls
Bring Your Own Models
Community Support
13000
Conversational AI
Custom Phone Number
Dedicated Deployment Engineer
Documentation
Emotion Instruction
Enterprise Compliance
SOC2HIPAAPCI
Game and AI Character Use Case
High Quality Voice
Inbound Calls
Languages Supported
EnglishJapaneseKoreanSpanishFrenchPortugueseItalianGermanRussianHindiArabic
Latency
<200ms
LLM-Powered TTS
Media Creation Use Case
Multi-language Support
100+ languages
Multimodal AI
No-code/Low-code Workflow
Outbound Calls
Phone Call Use Case
Prebuilt Templates
1000s
Speech-to-Speech API
Text to Speech
Tool Calling
Ultra-low Latency
Sub-500ms
Uptime SLA
99.99% uptime
Voice Cloning
Voice Design

Integration Features

API Integration With LLMs
HumeClaude Sonnet 4.5Grok 4 FastGPT 5+20 more
Client SDK
React (web SDK)
Developer SDKs
Python SDKTypescript SDKSwift SDKReact SDKC# SDK
Downloadable SDK ZIP
Github Repository
Integrations Information
40+ apps
OpenAI Integration
openaigpt-4o
Server SDKs
TypeScriptPythoncURL

Limitation Features

No Built-in Telephony Provider Mentioned
No Explicit Pricing Details
No Explicit Usage Quotas Listed
No File Format Support Listed
Text Input Limit
500

Pricing Features

Free Tier