Free-offer comparison
Free Real-Time Voice AI Platforms
A live voice call can use speech, model, and telephony services. Check which costs the free credit covers and how many sessions you can run.
Guide updated Sep 19, 2026 · Offer review and source dates appear below · Methodology
Free-offer ranking
Each row describes the provider’s recorded free offer, which may cover a different product from the category shown here. The table keeps published units separate. “Not confirmed” means we lack evidence for that detail; it does not mean the provider requires a card.
Scroll horizontally to compare every column.
| Rank | Provider | Free-access score | Recorded free offer | Access pattern | Billing/card | Offer note | Full review | Official source |
|---|---|---|---|---|---|---|---|---|
| #1 | Future AGI | 100/100 | AI credits: 2,000 credits per month; Gateway requests: 100,000 requests per month; Voice simulation: 60 minutes per month | Recurring allowance | No card confirmed | Free usage pauses at plan limits; pay-as-you-go overages require a card. | Jul 17, 2026 | View pricingAccessed Sep 13, 2026 |
| #2 | Deepgram | 85/100 | $200 credit | One-time balance | No card confirmed | Current concurrency is up to 50 REST and 150 WebSocket STT connections. | Sep 19, 2026 | View pricingAccessed Sep 19, 2026 |
| #3 | Speechmatics | 85/100 | $100 credit | One-time balance | No card confirmed | Without a card on file, API access pauses when the starting credit reaches zero. | Sep 19, 2026 | View pricingAccessed Sep 19, 2026 |
| #4 | Agora | 75/100 | Realtime communication free minutes: 10,000 minutes per month; Conversational AI engine credits: 300 minutes total | Recurring allowance | Not confirmed | 10,000 realtime voice/video minutes reset monthly (minutes don't roll-over). | Jul 17, 2026 | View pricingAccessed Jul 17, 2026 |
| #5 | Cartesia | 75/100 | Voice-agent prepaid balance: $1 credit per month; Voice model credits: 20,000 credits per month | Recurring allowance | Not confirmed | Free output does not include commercial-use rights; voice-model credits and voice-agent dollars are separate. | Sep 19, 2026 | View pricingAccessed Sep 19, 2026 |
| #6 | Gladia | 75/100 | 10 hours/mo | Recurring allowance | Not confirmed | Free concurrency is one live and three prerecorded transcriptions; higher limits are on paid plans. | Jul 17, 2026 | View documentationAccessed Sep 13, 2026 |
| #7 | Veryfi | 75/100 | 100 documents/mo | Recurring allowance | Not confirmed | The monthly allowance counts documents, not pages. | Jul 17, 2026 | View pricingAccessed Jul 17, 2026 |
| #8 | IBM Watson Speech-to-Text | 75/100 | 500 minutes/mo | Recurring allowance | Not confirmed | Lite instances are deleted after 30 days of inactivity. | Sep 13, 2026 | View pricingAccessed Sep 13, 2026 |
| #9 | LiveKit | 75/100 | 1K agent session minutes/mo + $2.5 credits | Recurring allowance | Not confirmed | Model inference has a separate $2.50 free credit; the equivalent number of inference minutes varies by model. | Jul 17, 2026 | View pricingAccessed Sep 13, 2026 |
| #10 | Bluejay | 60/100 | $25 credit | One-time balance | Not confirmed | The $25 starter credit is a one-time balance. | Jul 17, 2026 | View pricingAccessed Jul 17, 2026 |
| #11 | Roark | 55/100 | Free tier | Introductory offer | No card confirmed | The $50 starter credit is one-time; provider pass-through charges may apply. | Jul 17, 2026 | View pricingAccessed Jul 17, 2026 |
| #12 | Vapi | 30/100 | Free tier | Introductory offer | Not confirmed | The startup grant is conditional, and applications are on hold. | Jul 17, 2026 | View pricingAccessed Sep 13, 2026 |
Why these providers appear in this order
We score each provider’s recorded free offer: up to 40 points for recurring or durable access, 20 for a confirmed no-card signup, 15 for a stated allowance, 15 for distinct evidence links, and 10 for documented terms. Missing details earn no points. Ties favor longer-lasting access, then more detailed records, then provider name. The score does not measure product quality or whether the free offer covers this category. Read the full method before treating it as a recommendation.
Which providers are included?
We include active directory records tagged for real-time voice AI platforms. A tag describes a provider’s capability; its recorded free offer may cover only part of that provider’s catalog. Check the model or endpoint in the provider’s terms before building on the allowance.
See the full real-time voice AI platforms category, including records excluded from this guide.