Vapi

Voice AI agentsfor developerssign upread the docsTalk to vapigive it a TryTeams at trail-blazing startups to Fortune 500 companies deploy voice agents on the Vapi platform.The most configurable API to build leading voice AI products and scale phone operations.Calls300M+Assistants Launched2.5M+Developers500K+APIMaking voice AI simple and accessible.View on GithubDownload ZIPClient SDKServer SDKUse casesFeels human. Moves the needle.Inbound callsOutbound callsInbound calls powers 400,000+ daily calls. saves 100sof engineering hours monthly.Case Studytry it nowA key technical requirement was the ability to bring our own stack — Vapi's developer-friendly API-first approach made this possible.Quang TranCTO, FleetWorksReceive callShipper InfoUse toolFetch_available_jobs_from_brokerConditionJob Available?IntegrationsIntegrate with more than 40+ apps in a snap.How It WorksTry in minutes.Deploy in days.001Choose your workflow.Pick from 1000s of pre-made templates, or build one yourself.002Plug it in.Whether it's in your telephony, website, or in your app, we have it covered.003Done.Handle millions of calls and watch how they perform.FeaturesFlexible for engineers. Easy for business users.MultilingualTalk to agents in English, Spanish, Mandarin, or one of 100+ other supported languages.API-nativeEverything is exposed as an API, with 1000s of configurations and integrations.Automated testingDesign test suites of simulated voice agents to identify hallucination risks before going to production.Bring your own modelsBring your own API keys for transcription, LLM, or text-to-speech models. Or, plug in your own self-hosted models.Tool callingPlug in your APIs as tools to intelligently fetch data and perform actions on your server.A/B experimentsTest different variations of prompts, voices, and flows to continuously optimize performance.ENTERPRISEReliable.Scalable.Secure.99.99% UptimeCustom real-time audio infrastructure with enterprise-grade reliability.Forward-deployed TeamDeployment assistance with a dedicated forward-deployed engineer to go live in a week.Sub-500ms LatencyScale up and down to millions of calls in minutes with ultra-low latency interactions.AI GuardrailsBuilt-in conversation guardrails prevent model hallucinations and ensure data integrity.SOC2, HIPAA, & PCI CompliantEnterprise-level security for healthcare and financial services.Community250,000+ devs are already here. Join the movement.CONFIGURATION POINTS4.2K+DocsSUPPORT TOPICS13K+CommunityFOLLOWERS9.6K+LinkedInCareers at vapiBrilliant minds. Bleeding-edge tech. Relentless drive.Join a team of the most cracked people to do rewarding work in an intensely ambitious environment.See open rolesYour questions,answered.What is Vapi?How is this more cost-effective for my organisation?What is the difference from other AI voice competitors?I need holistic customization, what types of support does your platform offer?Is it difficult to set up?Get started todaySign upRead the docsLoading footer... --- BLOGArticlesJoin the newsletterAllAgent BuildingCompany NewsComparisonFeaturesIndustry InsightSecurityUse CasesCase StudiesCategoriesMar 20, 2026Composer Webinar: Your Most-Asked Questions, AnsweredRead moreAGENT-BUILDING72VIEW MOREMAR 20, 2026Composer Webinar: Your Most-Asked Questions, AnsweredFEB 25, 2026Your AI Coding Assistant Just Learned to Build Voice AgentsFEB 11, 2026Vibe code voice agentsDEC 17, 2025Announcing Vapi Voices Beta: Lower Cost, Lower Latency for High-volume Voice AIDEC 03, 2025Your Voice Agents Need Tests. Now They Have Them.NOV 19, 2025GPT-5.1 Just Fixed the Thing That's Been Bugging Me for YearsNOV 13, 2025Introducing Squads: Teams of AssistantsOCT 27, 2025Build Using Free Cartesia Sonic 3 TTS All Week on VapiSEP 15, 2025Build with Free, Unlimited MiniMax TTS All Week on VapiAUG 28, 2025GPT Realtime is Now Available in VapiAUG 07, 2025GPT-5 Now Live in VapiJUL 31, 2025How We Solved DTMF Reliability in Voice AI SystemsJUL 24, 2025How We Built Adaptive Background Speech Filtering at VapiJUL 14, 2025How we solved latency at VapiJUN 27, 2025Audio Preprocessing for Speech-to-Text: Definition, Implementation, and Use CasesVIEW MORE BLOGSCOMPANY-NEWS42VIEW MOREFEB 24, 2026Give Your OpenClaw Agent a Voice: Adding Phone Calls with Vapi SkillsDEC 17, 2025Announcing Vapi Voices Beta: Lower Cost, Lower Latency for High-volume Voice AINOV 20, 2025Structured Outputs: Extract validated data from voice AI callsNOV 19, 2025GPT-5.1 Just Fixed the Thing That's Been Bugging Me for YearsNOV 12, 2025From Existential Crisis to the Super Bowl of VoiceOCT 27, 2025Build Using Free Cartesia Sonic 3 TTS All Week on VapiSEP 15, 2025Build with Free, Unlimited MiniMax TTS All Week on VapiSEP 01, 2025Everything We Shipped in August 2025AUG 28, 2025GPT Realtime is Now Available in VapiAUG 12, 2025How We Achieved 99.99% Reliability At VapiAUG 07, 2025GPT-5 Now Live in VapiAUG 01, 2025Everything We Shipped in July 2025JUL 31, 2025How We Solved DTMF Reliability in Voice AI SystemsJUL 24, 2025How We Built Adaptive Background Speech Filtering at VapiJUL 14, 2025How we solved latency at VapiVIEW MORE BLOGSCOMPARISON18VIEW MOREJUN 24, 2025Mistral vs Llama 3: Complete Comparison for Voice AI ApplicationsJUN 23, 20258 Alternatives to Azure for Voice AI STTJUN 19, 2025Gemini Flash vs Pro: Understanding the Differences Between Google’s Latest LLMsJUN 18, 2025Claude vs ChatGPT: The Complete Comparison GuideJUN 17, 2025Deepgram Nova-3 vs Nova-2: STT EvolvedJUN 05, 2025GPT-4.1 vs Claude 3.7: Which AI Delivers Better Voice Agents?JUN 04, 202511 Great ElevenLabs Alternatives: Vapi-Native TTS Models JUN 04, 2025ElevenLabs vs OpenAI TTS: Which One''s Right for You?MAY 30, 2025Best Speechify Alternative: 5 Tools That Actually Work BetterMAY 29, 2025Choosing Between Gemini Models for Voice AIMAY 28, 2025DeepSeek R1 vs V3 for Voice AI DevelopersMAY 23, 2025Amazon Lex Vs Dialogflow: Complete Platform Comparison GuideMAY 23, 2025Top 5 Character AI Alternatives for Seamless Voice IntegrationMAY 23, 2025Narakeet: Turn Text Into Natural-Sounding SpeechMAY 22, 2025The 10 Best Open-Source Medical Speech-to-Text Software ToolsVIEW MORE BLOGSFEATURES53VIEW MOREMAR 20, 2026Composer Webinar: Your Most-Asked Questions, AnsweredFEB 25, 2026Your AI Coding Assistant Just Learned to Build Voice AgentsFEB 11, 2026Vibe code voice agentsDEC 03, 2025Your Voice Agents Need Tests. Now They Have Them.NOV 20, 2025Structured Outputs: Extract validated data from voice AI callsNOV 13, 2025Introducing Squads: Teams of AssistantsSEP 16, 2025How We Built Vapi's Voice AI Pipeline: Part 2AUG 21, 2025How We Built Vapi's Voice AI Pipeline: Part 1JUL 08, 2025Introducing Vapi CLI: The Best Developer Experience for Building Voice AI AgentsJUL 02, 2025Now Use Vapi Chat Widget In VapiJUN 26, 2025Now Run Outbound Call Campaigns with VapiJUN 24, 2025Real-time STT vs. Offline STT: Key Differences ExplainedJUN 23, 2025Speech Latency Solutions: Complete Guide to Sub-500ms Voice AIJUN 20, 2025A History of Text-to-Speech: From Mechanical Voices to AI AssistantsJUN 05, 2025Introducing Vapi WorkflowsVIEW MORE BLOGSINDUSTRY-INSIGHT14VIEW MORESEP 16, 2025How We Built Vapi's Voice AI Pipeline: Part 2JUL 31, 2025How We Solved DTMF Reliability in Voice AI SystemsJUL 24, 2025How We Built Adaptive Background Speech Filtering at VapiJUL 14, 2025How we solved latency at VapiJUN 04, 2025Three Examples of Voice AI Improving LogisticsMAY 26, 2025Understanding Kindroid: Lessons from the AI Companion MarketMAY 23, 2025Introduction to Adobe Podcast Tools for PodcastingMAY 23, 2025What Is RCS Messaging? The Complete Guide for DevelopersMAY 22, 2025Launching the Vapi for Creators ProgramAPR 18, 2025Bring Vapi Voice Agents into Your Workflows With The New Vapi MCP ServerAPR 15, 2025Vapi x Deepgram Aura-2 — The Most Natural TTS for Enterprise Voice AIMAR 11, 2025Vapi x Cartesia: Ultra-Realistic Voice AI with Sonic 2.0MAR 06, 2025AI Call Centers are changing Customer Support IndustryMAR 04, 2025Voice AI is eating the worldSECURITY2VIEW MOREMAY 26, 2025Env Files and Environment Variables for Voice AI ProjectsMAY 26, 2025Introduction to SRTP: Secure Real-Time Transport ProtocolUSE-CASES9VIEW MOREJUN 26, 2025Now Run Outbound Call Campaigns with VapiJUN 18, 2025Five Ways Real Estate Agents Can Use AIJUN 04, 2025Three Examples of Voice AI Improving LogisticsMAY 23, 2025Mastering Environment Variables: Set Up for Vapi Voice AI IntegrationMAY 20, 2025Now Integrate GoHighLevel Calendar With VapiAPR 22, 2025Add SMS to Your Vapi AgentsAPR 18, 2025Bring Vapi Voice Agents into Your Workflows With The New Vapi MCP ServerAPR 01, 2025Scaling Client Intake Engine with Vapi Voice AI agentsMAR 06, 2025AI Call Centers are changing Customer Support IndustryCASE STUDIES5VIEW MOREJAN 14, 2026Instawork runs 1M+ minutes of voice screening per month on VapiJAN 07, 2026How 4 engineers ramped to the volume of 50 call center agents in 1 weekJAN 07, 2026Major Automotive Marketplace Cut Their Call Center in Half. Revenue Doubled.SEP 19, 2025Delphi saved 10 months of engineering work with VapiFEB 18, 2025Fleetworks saves 100+ engineering hours per monthBuild your own voice agent.sign upread the docsSubscribeSubscribeLoading footer...