Vapi vs Yellow.ai
Vapi
vapi.ai
Yellow.ai
yellow.aiSide by side
| Figure | Vapi | Yellow.ai |
|---|---|---|
| Price from | $29/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Plans published | 5 | 5 |
| Spec score · AI Voice Agents | 8.6 (#5) | 8.2 (#10) |
| Spec score · Conversational AI Platforms | 8.5 (#10) | 8.2 (#16) |
| Analytics | Vapi offers reporting and analytics dashboards plus exports for usage, performance and conversation quality. | The platform analyzes conversations and generates insights intended to improve agent performance and knowledge content. |
| Automated testing | The platform includes test suites and simulations intended to identify hallucination and behavior risks before deployment. | Yellow.ai includes automated testing for checking AI-agent behavior before release. |
| Documentation depth | Documentation includes quickstarts, API reference, SDK links, CLI guides, webhook schemas, security material and a dated changelog. | The documentation site contains platform guides, API endpoints, channel guides, cookbooks, enterprise deployment material and an MCP server for querying docs. |
| Funding | Crunchbase lists a Vapi Series A led by Bessemer Venture Partners with eight investors, while the amount is not displayed publicly. | Yellow.ai's company history reports $4 million Series A funding in 2019 and $78.15 million Series C funding in 2021. |
| Integrations | Documented prebuilt or standard integrations include Make, n8n, Google Calendar, Google Sheets, Slack and GoHighLevel. | Yellow.ai advertises more than 150 prebuilt enterprise integrations, including Salesforce, Zendesk, Genesys and NICE. |
| Rating on G2 | 3.6 out of 5 from 6 reviews. | Yellow.ai is rated 4.4 out of 5 from 107 reviews. |
| Rating on GetApp | 0 out of 5 from 0 reviews; the listing says no reviews. | Yellow.ai is rated 4.5 out of 5 from 37 reviews, with 84% classified as positive. |
| Rating on Trustpilot | 2.4 out of 5 from 15 reviews. | Yellow.ai has a TrustScore of 2.9 out of 5 from 2 reviews, with both reviews rated one star. |
| Security certifications | Vapi states that it is SOC 2 Type II attested and undergoes annual third-party audits. | Yellow.ai states that it has ISO/IEC 27001:2022, ISO/IEC 27701:2019 and SOC 2 Type II certifications or attestations, plus PCI DSS 4.0.1 service-provider compliance and HIPAA support. |
| Self-hosting | Vapi's FAQ states that on-premise deployment is not supported. | The public documentation describes Studio and flows running on cloud.yellow.ai and does not document a self-hosted deployment option. |
| What it does | Vapi provides infrastructure for building, deploying and improving conversational voice agents for calls and applications. | Yellow.ai provides an enterprise agentic AI platform for automating customer and employee interactions across chat, voice, email and messaging channels. |
Plans
Vapi
- No Success PackageFree
- Core$29 a month
- Pro$999 a month
- PremierPriced on request
- No Success Package / Usage onlyFree
Yellow.ai
- FreeFree
- EnterprisePrice not published
- EnterprisePriced on request
- FreemiumFree
- PremiumPriced 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.