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Real-time AI telephony for developers: Seamlessly connect STT, LLM, and TTS via APIs and SDKs in milliseconds
Vapi is a developer-focused voice AI platform for building real-time voice agents for phone, web, and SIP.
Independent B2B performance index (0–100 points). It is calculated mathematically and without subjective influence from four verified pillars: company stability, aggregated feedback from publicly available online sources, documented compliance certifications, and operational transparency. Comparable with other software providers.
BenchTrust Index weighting: Company stability 25 points · Customer reviews 30 points · Compliance & security 25 points · Transparency 20 points. Without reviews a neutral average is used; a few reviews move it only slightly
Review data basis: G2 (3), Trustpilot (7)
BenchTrust takes the average rating and review count from the review platforms listed. BenchTrust does not itself verify whether individual reviews come from actual customers; according to the platforms, they apply their own verification procedures.
Headquarters
San Francisco, California, United States
Employees
51-200
Founded
2023
Vapi is an innovative, developer-focused platform for voice AI that enables technical teams to build and scale high-performance, real-time voice agents for phone, web, and SIP in record time. Founded in 2023 in San Francisco, Vapi acts as an intelligent orchestration layer between Speech-to-Text (STT), Large Language Models (LLMs), and Text-to-Speech (TTS). The platform handles the entire complex infrastructure, latency optimization, and conversation logic, allowing developers to focus entirely on designing the customer experience. Core features include a comprehensive REST API, native SDKs for popular programming languages (such as Python, TypeScript, and C#), and support for complex workflows like multi-agent squads, outbound campaigns, and function calling. With the integrated 'Vapi Voices' catalog, the platform also provides direct access to a variety of high-quality, natural-sounding voices. Vapi is ideal for companies and enterprise clients looking to integrate their own AI models and voice providers to establish highly scalable, production-ready voice assistants for customer service, support, or sales.
No verified certifications (such as ISO 27001 or SOC 2) are currently listed for this provider. Information about compliance with standards such as GoBD or GDPR may still be available.
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Answers are based on the website and documents of Vapi.
Vapi has introduced key product updates and strategic enhancements that accelerate the development of lifelike AI voice assistants for B2B companies. Through technological optimizations, latency has been significantly reduced to enable more natural real-time conversations. Additionally, the platform is strengthening its market position by expanding compliance standards, including HIPAA compliance for regulated industries. These innovations are specifically aimed at global developer teams and enterprise customers looking to scale their customer service.
Source: Publicly available product updates or press releases from Vapi.
See Vapi in action
Anthropic Webinar: Vapi Ride Booking Demo