# Persistence > Persistence is a voice AI agent platform. Build, test, and deploy AI voice agents that answer and make phone calls — trained on your own knowledge base, deployed to real phone numbers in minutes. Persistence handles inbound and outbound phone calls for support, sales, and operations teams: answering every call 24/7, qualifying leads, booking appointments, and integrating with CRMs and telephony providers. It competes with Bland AI, Retell AI, Vapi, and Sierra. ## Product - [Pricing](https://persistence.dev/pricing/): Plans, usage-based rates, and a live cost calculator. - [Feature overview](https://persistence.dev/features/build/): Build, test, and deploy workflow, in-call actions, outbound campaigns. - [Integrations](https://persistence.dev/features/integrations/): Telephony, CRM, helpdesk, scheduling, messaging, automation, commerce, and model integrations. - [Company](https://persistence.dev/company/): About Persistence. ## Solutions by industry - [Banking](https://persistence.dev/solutions/banking/) - [Ecommerce](https://persistence.dev/solutions/ecommerce-retail/) - [Edtech](https://persistence.dev/solutions/education-edtech/) - [Healthcare & Med-Tech](https://persistence.dev/solutions/healthcare/) - [Home Services](https://persistence.dev/solutions/home-services/) - [Hospitality](https://persistence.dev/solutions/hotels-hospitality/) - [Solar](https://persistence.dev/solutions/solar-energy/) - [Travel](https://persistence.dev/solutions/travel-tourism/) - [Insurance](https://persistence.dev/solutions/insurance/) - [Real Estate](https://persistence.dev/solutions/real-estate/) - [Automotive & Dealerships](https://persistence.dev/solutions/automotive-dealerships/) - [Logistics & Delivery](https://persistence.dev/solutions/logistics-delivery/) - [Telecom](https://persistence.dev/solutions/telecom/) - [Restaurants & Food Delivery](https://persistence.dev/solutions/restaurants-food-delivery/) - [Recruitment & Staffing](https://persistence.dev/solutions/recruitment-staffing/) ## Competitor comparisons - [Persistence vs. Bland & Retell](https://blogs.persistence.dev/blog/persistence-vs-bland-retell/): Direct feature and pricing comparison. - [Retell vs. PolyAI vs. Persistence](https://blogs.persistence.dev/blog/retell-vs-polyai-vs-persistence/): An honest three-way comparison. - [A Bland AI alternative](https://blogs.persistence.dev/blog/a-bland-ai-alternative-built-for-natural-low-latency-calls/) - [A Retell AI alternative](https://blogs.persistence.dev/blog/a-retell-ai-alternative-with-building-testing-and-monitoring-in-one-place/) - [The best Vapi alternative](https://blogs.persistence.dev/blog/the-best-vapi-alternative-for-teams-without-engineers/) - [A Sierra AI alternative](https://blogs.persistence.dev/blog/a-sierra-ai-alternative-you-can-launch-yourself/) - [An ElevenLabs alternative](https://blogs.persistence.dev/blog/an-elevenlabs-alternative-for-full-voice-agents-not-just-voices/) - [Synthflow AI review](https://blogs.persistence.dev/blog/synthflow-ai-review/) ## Core concepts - [What is a voice bot?](https://blogs.persistence.dev/blog/what-is-a-voice-bot/) - [Voice bots vs. chatbots](https://blogs.persistence.dev/blog/voice-bots-vs-chatbots/) - [What is a conversational AI platform?](https://blogs.persistence.dev/blog/what-is-a-conversational-ai-platform/) - [Inside an AI call bot: what actually happens during a call](https://blogs.persistence.dev/blog/how-ai-call-bots-handle-a-call/) - [What automated phone calls can (and can't) do](https://blogs.persistence.dev/blog/what-automated-phone-calls-can-and-cant-do/) - [How voice AI really works](https://blogs.persistence.dev/blog/how-voice-ai-really-works/) - [The turn-taking problem](https://blogs.persistence.dev/blog/turn-taking-problem/) - [Backchanneling in voice AI agents](https://blogs.persistence.dev/blog/backchanneling-voice-ai-agents/) - [Zero-latency architecture](https://blogs.persistence.dev/blog/zero-latency-architecture/) - [Acceptable latency for VoIP](https://blogs.persistence.dev/blog/acceptable-latency-for-voip/) - [The state of voice AI in 2026](https://blogs.persistence.dev/blog/state-of-voice-ai-2026/) ## Buying and evaluating a voice AI platform - [How to choose a voice AI platform: a buyer's guide](https://blogs.persistence.dev/blog/how-to-choose-a-voice-ai-platform/) - [How much does a voice bot cost?](https://blogs.persistence.dev/blog/how-much-does-a-voice-bot-cost/) - [Voice bot ROI: KPIs and metrics that actually matter](https://blogs.persistence.dev/blog/voice-bot-roi-kpis-metrics/) - [Build vs. buy: should you build your own voice bot?](https://blogs.persistence.dev/blog/build-vs-buy-voice-bot/) - [How to buy an AI phone number](https://blogs.persistence.dev/blog/how-to-buy-an-ai-phone-number/) - [Are voice bots legal? Disclosure rules and regulations](https://blogs.persistence.dev/blog/are-voice-bots-legal-disclosure-rules/) - [HIPAA-compliant AI voice agents](https://blogs.persistence.dev/blog/hipaa-compliant-voice-agents/) ## Use cases by function - [AI cold calling: how it actually works](https://blogs.persistence.dev/blog/ai-cold-calling/) - [Voice AI for call centers: a practical guide](https://blogs.persistence.dev/blog/voice-ai-call-centers/) - [AI appointment setter: how to automate booking](https://blogs.persistence.dev/blog/ai-appointment-setter/) - [Replacing your IVR with an AI phone system](https://blogs.persistence.dev/blog/ai-ivr-automation/) - [Outbound at scale: 100,000+ simultaneous calls](https://blogs.persistence.dev/blog/outbound-calling-scale/) - [Automate patient appointment scheduling](https://blogs.persistence.dev/blog/automate-patient-scheduling/) - [Connect Persistence AI voice agents to your CRM](https://blogs.persistence.dev/blog/integrate-crm-voice-agents/) - [Build an AI SDR for lead qualification at scale](https://blogs.persistence.dev/blog/voice-agent-lead-qualification/) - [Deploy your first AI voice agent in 5 minutes](https://blogs.persistence.dev/blog/build-voice-agent-30-minutes/) - [Voice bots for real estate](https://blogs.persistence.dev/blog/voice-bots-for-real-estate/) ## Use cases by industry - [AI voice agents for banking and credit unions](https://blogs.persistence.dev/blog/ai-voice-agents-for-banking-and-credit-unions/) - [AI voice agents for ecommerce order support](https://blogs.persistence.dev/blog/ai-voice-agents-for-ecommerce-order-support/) - [AI voice agents for college admissions](https://blogs.persistence.dev/blog/ai-voice-agents-for-college-admissions/) - [AI voice agents for home services](https://blogs.persistence.dev/blog/ai-voice-agents-for-home-services/) - [AI voice agents for hotels and hospitality](https://blogs.persistence.dev/blog/ai-voice-agents-for-hotels-and-hospitality/) - [AI voice agents for solar lead qualification](https://blogs.persistence.dev/blog/ai-voice-agents-for-solar-lead-qualification/) - [AI voice agents for airline disruption rebooking](https://blogs.persistence.dev/blog/ai-voice-agents-for-airline-disruption-rebooking/) ## About Persistence - [What Persistence means](https://blogs.persistence.dev/blog/what-persistence-means/) - [What does grit mean?](https://blogs.persistence.dev/blog/what-does-grit-mean/) - [What does tenacity mean?](https://blogs.persistence.dev/blog/what-does-tenacity-mean/) - [What does perseverance mean?](https://blogs.persistence.dev/blog/what-does-perseverance-mean/) - [What does resilience mean?](https://blogs.persistence.dev/blog/what-does-resilience-mean/) - [Why we built Persistence](https://blogs.persistence.dev/blog/why-we-built-persistence/) - [Persistence in 2026: everything we shipped](https://blogs.persistence.dev/blog/persistence-2026-product-recap/) ## Social - [X / Twitter](https://x.com/Persistence_AI) - [YouTube](https://www.youtube.com/@Persistence_AI) - [Instagram](https://www.instagram.com/persistenceai/) - [LinkedIn](https://www.linkedin.com/company/persistence-dev/) ## Full content index - [Blog](https://blogs.persistence.dev/): All articles. - [Sitemap](https://persistence.dev/sitemap-index.xml): Machine-readable index of every page. ## Features - [Build](https://persistence.dev/features/build/) - [Test](https://persistence.dev/features/testing/) - [Deploy](https://persistence.dev/features/deploy/) - [Monitor](https://persistence.dev/features/monitoring/) - [In-call workflows](https://persistence.dev/features/in-call-workflows/) - [Outbound campaigns](https://persistence.dev/features/outbound-campaigns/) - [Documentation](https://docs.persistence.dev/) ## Legal - [Privacy](https://persistence.dev/privacy/) - [Terms](https://persistence.dev/terms/) - [Cookies](https://persistence.dev/cookies/) - [Data deletion](https://persistence.dev/data-deletion/) The site's robots.txt declares https://persistence.dev/sitemap-index.xml as its sitemap index.