Vapi vs Voiceflow
Vapi
vapi.ai
Voiceflow
voiceflow.comSide by side
| Figure | Vapi | Voiceflow |
|---|---|---|
| Price from | $29/mo | $81/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 5 | 7 |
| Spec score · AI Voice Agents | 8.6 (#5) | 8.7 (#4) |
| Spec score · Conversational AI Platforms | 8.5 (#10) | 8.6 (#7) |
| Company facts | LinkedIn lists Vapi as a privately held San Francisco software-development company founded in 2023 with 51–200 employees. | LinkedIn lists Voiceflow as founded in 2019, headquartered in San Francisco and employing 201–500 people. |
| Funding | Crunchbase lists a Vapi Series A led by Bessemer Venture Partners with eight investors, while the amount is not displayed publicly. | A 2024 company release announced a $15 million OpenView-led round at a $105 million valuation and $35 million total raised. |
| Integrations | Documented prebuilt or standard integrations include Make, n8n, Google Calendar, Google Sheets, Slack and GoHighLevel. | Native connectors include Zendesk, Salesforce, HubSpot, Shopify, Airtable, Google Sheets, Gmail and Twilio. |
| Intended users | Vapi describes the platform as developer-first and says it is built for developers and ready for business. | The product is presented for CX and support leaders, engineers, enterprise teams, and agencies or partners building agents for clients. |
| Limit: Trustpilot complaints | Trustpilot's visible reviews include complaints about high pricing for HIPAA voice receptionists and a large one-star share. | Negative reviewers describe unresolved technical problems and difficulty obtaining helpful support. |
| Model choice | Customers can bring their own transcription, language-model and text-to-speech providers or select from Vapi's managed catalog. | Voiceflow says teams can choose from major LLM providers or bring their own model. |
| Product | Vapi describes itself as a platform for builders to build, deploy, and improve voice agents. | Voiceflow is a platform for building, testing, deploying, and monitoring chat and voice agents across channels and languages. |
| Rating on G2 | 3.6 out of 5 from 6 reviews. | 4.5 out of 5 from 115 reviews. |
| Rating on Trustpilot | 2.4 out of 5 from 15 reviews. | 4.1 out of 5 from 15 reviews. |
| Security certifications | Vapi states that it is SOC 2 Type II attested and undergoes annual third-party audits. | Voiceflow states that it is SOC 2 Type II audited, ISO/IEC 27001:2022 certified, GDPR compliant and HIPAA compliant. |
| Self-hosting | Vapi's FAQ states that on-premise deployment is not supported. | An official Voiceflow V2 article describes an enterprise dialog engine that can be self-hosted on internal infrastructure. |
| Support | The free-start package includes peer-to-peer support through Discord and email support without an SLA; paid packages list response SLAs and additional support options. | Official documentation directs users to Voiceflow support by email and offers enterprise product demos. |
| What it does | Vapi provides infrastructure for building, deploying and improving conversational voice agents for calls and applications. | Voiceflow provides tools to build, test, deploy and monitor customer-facing chat and voice agents across channels and languages. |
Plans
Vapi
- No Success PackageFree
- Core$29 a month
- Pro$999 a month
- PremierPriced on request
- No Success Package / Usage onlyFree
Voiceflow
- Agencies & PartnersFree
- StarterFree
- Pro$120 a month
- Business$500 a month
- Pro$972 a year
- BusinessesPriced on request
- EnterprisePriced on request
In their own words
Vapi
Vapi is a voice-call platform available on the web and iOS. It supports inbound and outbound calls, human handoff, concurrent calls, and custom phone numbers. The usage-based No Success Package is listed at free and includes $5 in starter credits, one Vapi phone number, four concurrent calls, and full platform access. Core costs $29 a month, billed monthly, and includes five phone numbers, 10 concurrent calls, 30 days of raw data retention, and email support. Pro costs $999 a month, billed monthly, and includes 10 phone numbers, 30 concurrent calls, 180 days of raw data retention, RBAC, ZDR, and a 99% uptime SLA. Premier uses custom pricing; its listed options include custom phone-number counts and custom RBAC, ZDR, and SSO, with dedicated SIP available. The service listing says there is no free plan, although the No Success Package is presented at no cost with starter credits. Plan allowances vary, so the listed overall concurrent-call figure of 10 is not the allowance for every package.
Voiceflow
Voiceflow is a platform for building, testing, deploying, and monitoring chat and voice agents across channels and languages. Its builder combines agentic playbooks, deterministic workflows, shared instructions, and guardrails. Teams can review transcripts and call recordings, run evaluations and tests, and track analytics. Agents can reach users through a native chat widget, mobile apps, phone calls, SMS, or custom interfaces built with the Conversations API. Native integrations include Zendesk, Salesforce, HubSpot, Shopify, Airtable, Google Sheets, Gmail, and Twilio. Agents can also connect to external REST APIs, custom Functions, and MCP servers. Teams can choose from major LLM providers or bring their own model. Voiceflow says customer data is not used to train AI or machine-learning models and integrated model providers are configured for zero data retention. Its security information describes encryption at rest with customer-managed keys and encryption in transit using TLS and mTLS. The company was founded in 2019. Agencies and partners have a free-trial plan with usage-based billing; business pricing is available on request. Support includes implementation that can be self-serve or fully managed.