Matrix/Features/Free tier / credits
Which voice AI agent platforms have Free tier / credits?
Free minutes or credits to try the platform without paying.
7 Yes2 Partial1 Unknown
Verified Yes: Vapi, Retell AI, Cartesia Agents, ElevenLabs Agents, Deepgram Voice Agent API, LiveKit Agents, Ultravox.
| Platform | Status | What the vendor says | Source |
|---|---|---|---|
| Cartesia AgentsCartesia | Yes | $1 credit (~33 min) $1 of voice-agent credit, about 33 minutes. | Source |
| Deepgram Voice Agent APIDeepgram | Yes | $200 credit $200 free credit, no card required. | Source |
| ElevenLabs AgentsElevenLabs | Yes | 15 min/mo Free plan: 15 minutes of calls, 4 concurrent calls. | Source |
| LiveKit AgentsLiveKit | Yes | 1,000 min/mo Build plan $0/mo with 1,000 agent session minutes and 5 concurrent sessions. | Source |
| Retell AIRetell AI | Yes | $10 credit $10 free credits and 20 free concurrent calls. | Source |
| UltravoxUltravox | Yes | 30 free minutes First 30 minutes free, up to 5 concurrent calls. | Source |
| VapiVapi | Yes | $5 credit $5 in free credits, 1 phone number, 4 concurrent calls. | Source |
| Bland AIBland | Partial | $0 platform fee Start plan has no platform fee and needs no card, but minutes are billed; no free minutes stated. | Source |
| VaaniVaani | Partial | Start free "Start free" CTA; free-credit amount not stated on official pages. | Source |
| SynthflowSynthflow | No | None Pricing page: no free plan or trial. | Source |
| OpenAI Realtime APIOpenAI | Unknown | No statement found on the official pages we checked. | — |
Checked Nov 4, 2026. Filter the matrix by this feature →
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