# What does Vapi use? Vapi (vapi.ai) shows public evidence of 52 tools, according to runsonwhat (last checked 2026-10-07). - Industry: Engineering, Product and Design - Size: 11–50 employees - Based in: San Francisco, United States - LinkedIn: https://www.linkedin.com/company/vapi-ai ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [Lottie](https://www.runsonwhat.com/reverse/lottie) | Media & UI | Website code | | | [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | Custom domain | | | [Okta](https://www.runsonwhat.com/reverse/okta) | Auth & Identity | Custom domain | 2026-08 | | [Modal](https://www.runsonwhat.com/reverse/modal) | AI | Custom domain | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code | | | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | | [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | | [PostHog](https://www.runsonwhat.com/reverse/posthog) | Analytics | DNS verification records, Website code | | | [Better Stack](https://www.runsonwhat.com/reverse/betterstack) | Monitoring | Custom domain | | | [HockeyStack](https://www.runsonwhat.com/reverse/hockeystack) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [X Ads](https://www.runsonwhat.com/reverse/x-ads) | Ads & Pixels | Website code | | | [Reddit Ads](https://www.runsonwhat.com/reverse/reddit-ads) | Ads & Pixels | Website code | | | [Apollo.io](https://www.runsonwhat.com/reverse/apollo) | Sales & CRM | Website code | | | [LiveIntent](https://www.runsonwhat.com/reverse/liveintent) | Ads & Pixels | Website code | | | [Discord](https://www.runsonwhat.com/reverse/discord) | Support & Docs | Website code | | | [Prismic](https://www.runsonwhat.com/reverse/prismic) | Website & CMS | Website code | | | [Vector](https://www.runsonwhat.com/reverse/vector) | Sales & CRM | Website code | | | [Propensity](https://www.runsonwhat.com/reverse/propensity) | Sales & CRM | Website code | | | [Canny](https://www.runsonwhat.com/reverse/canny) | Support & Docs | Custom domain | | | [Reo.dev](https://www.runsonwhat.com/reverse/reo) | Sales & CRM | Website code | | | [Tolt](https://www.runsonwhat.com/reverse/tolt) | Marketing | Custom domain, Website code | | | [Atlas](https://www.runsonwhat.com/reverse/atlas-support) | Support & Docs | Custom domain | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records | | | [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records | | | [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records | | | [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records | | | [1Password](https://www.runsonwhat.com/reverse/1password) | Security & Compliance | DNS verification records | | | [Osano](https://www.runsonwhat.com/reverse/osano) | Security & Compliance | Website code | | | [Notion](https://www.runsonwhat.com/reverse/notion) | Collaboration | DNS verification records | | | [Rippling](https://www.runsonwhat.com/reverse/rippling) | People & HR | DNS verification records | | | [Postman](https://www.runsonwhat.com/reverse/postman) | Dev Tools | DNS verification records | | | [Uber for Business](https://www.runsonwhat.com/reverse/uber) | Finance & Legal | DNS verification records | | | [Tailscale](https://www.runsonwhat.com/reverse/tailscale) | Security & Compliance | DNS verification records | | | [SafeBase](https://www.runsonwhat.com/reverse/safebase) | Security & Compliance | Custom domain | | | [Oneleet](https://www.runsonwhat.com/reverse/oneleet) | Security & Compliance | DNS verification records | | ## FAQ ### What tools does Vapi use? As of October 2026, runsonwhat has found 52 tools at Vapi (vapi.ai) in public records. Edge & Hosting: Cloudflare and Vercel. Application: React, Tailwind CSS and Next.js. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365, Google Workspace and Let's Encrypt. Last checked October 7, 2026. ### What cloud does Vapi run on? Vapi uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and a DNS verification record. Vercel is used by 46,422 companies runsonwhat tracks. ### What CRM does Vapi use? Vapi uses HubSpot for its CRM, alongside Apollo.io, Vector and Propensity, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on vapi.ai. HubSpot is used by 92,057 companies runsonwhat tracks. ### What email provider does Vapi use? Vapi uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 701,692 companies runsonwhat tracks. ### What does Vapi use for customer support? Vapi uses Discord for customer support and documentation, alongside Canny and Atlas, according to runsonwhat (October 2026). runsonwhat found Discord through Discord code on vapi.ai. Discord is used by 4,748 companies runsonwhat tracks. ### What payment provider does Vapi use? Vapi uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a subdomain that points at Stripe. Stripe is used by 26,297 companies runsonwhat tracks. ### How long has Vapi used Okta? Vapi has used Okta since at least August 2026, going by the first public certificate of the vapi.ai subdomain that points at Okta. ### Does Vapi use Cloudflare? Yes. runsonwhat found Cloudflare at Vapi through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 692,263 companies runsonwhat tracks. ### Does Vapi use AI tools? Yes. runsonwhat has found Anthropic and Modal at Vapi; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Vapi may use more AI tools than these. ### Which companies have a tech stack similar to Vapi's? The companies with the stacks most like Vapi's are Thera, Mailmodo Technologies, Blink and 21st, according to runsonwhat (October 2026). Each shares 8 to 17 tools with Vapi, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Vapi uses? runsonwhat reads public records only. Of the 52 tools at Vapi, 22 were found through code on vapi.ai, 18 through DNS records, 9 through subdomains that point at the vendor, 2 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and vapi.ai about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/vapi.ai (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.