Compare features
Pricing, telephony & platform capabilities
The table below outlines differences in pricing, deployment, and features to help you choose the right voice AI platform for production.
| Feature | VOXBRIDGE | Vapi | Retell | Synthflow | Bland AI |
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| Pricing & plans | |||||
| Free tier (no card required) |  |
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| Included minutes on paid plans | |
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| Transparent per-minute pricing | |
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| Crypto payments (BTC, ETH, USDC) | |
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| Telephony & API | |||||
| Inbound + outbound on one API | |
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| Built-in telephony (no BYO carrier) | |
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| Signed webhook transcripts | |
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| Platform & onboarding | |||||
| Multi-tenant dashboard | |
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| Self-serve signup & instant API keys | |
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| Enterprise SLA (99.9%+) | |
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Included · Not included · Hover for details
Why VOXBRIDGE
Built for production from day one
All-in telephony included
SIP telephony, real-time media, and agent orchestration — no separate carrier contract or speech pipeline to assemble.
Predictable pricing
Flat plan tiers with published overage rates so finance teams can forecast spend without surprise invoices.
Developer-first API
OpenAPI docs, signed webhooks, and 30 free minutes to validate a real integration before committing budget.