Build and run AI phone agents that book, qualify and transfer calls, billed by the minute.
United StatesAdded 2mo ago
Freemiumfrom $0.07/minAPI
92trust score out of 100
Synthflow alternatives
4 products our research names as a replacement for Synthflow in Voice Agents & Phone AI, each with what it does differently — prices, API and status from our own checks rather than from the vendors’ own pages.
Vapi
85Developer platform for building and running voice phone agents, billed per minute of call time.
United StatesAdded 2mo ago
Paidfrom $0.05/minAPI
92trust score out of 100
1
from $0.05 against $30000
Synthflow vs Vapi →Bland AI
71Phone-call agents billed per minute, with the language model, transcription and voice included in the rate
United StatesAdded 2mo ago
Paidfrom $0.14/minAPI
89trust score out of 100
2
from $0.14 against $30000
Synthflow vs Bland AI →PolyAI
68Enterprise voice agents that resolve customer calls end to end
United KingdomAdded 2mo ago
ContactAPI
88trust score out of 100
More in Voice Agents & Phone AI
Not named as direct replacements — neighbours from the same part of the catalog: the best-rated first, then a sample of the rest.
An AI assistant with its own phone number that answers calls, takes meeting notes, and tracks tasks and commitments.
United StatesAdded 1mo ago
Paidfrom $2.50/mo
85trust score out of 100
1
Voice AI agents that answer calls, update CRMs, and run scripted actions, billed per minute plus a monthly seat.
SpainAdded 1mo ago
Paidfrom $0.39/minAPI
87trust score out of 100
1
AI voice agents that call new leads within seconds, handle objections and book meetings into Google Calendar or Calendly.
United StatesAdded 1mo ago
Freemiumfrom $39/moAPI
82trust score out of 100
2
Open-source builder for voice and chat agents that answer calls, qualify leads and book meetings.
Added 2mo ago
Freemiumfrom $10 onceAPI
75trust score out of 100
Ziddny
69Build talking 3D-avatar or voice-only assistants and embed them on your site, billed by conversation minute.
JapanAdded 2mo ago
Paidfrom $5/mo
87trust score out of 100
1
JustCall
71Business phone and contact-centre platform whose AI voice agent answers calls, qualifies leads and books meetings
United StatesAdded 2mo ago
Paidfrom $29/seat/moAPI
77trust score out of 100
1
AI agent that dials businesses and government offices for you, sits on hold, and hands off to a live person.
United StatesAdded 1mo ago
Paid
56trust score out of 100
1
Zinng
69AI phone receptionist that answers business calls, books appointments and texts leads back
United StatesAdded 2mo ago
Paidfrom $49/mo
80trust score out of 100
1
AI voice agent that answers business phone lines around the clock and books, qualifies, and updates the CRM.
United StatesAdded 1mo ago
Paidfrom $200/moAPI
80trust score out of 100
1
Voice AI agents that answer and route business phone calls around the clock.
Added 1mo ago
ContactAPI
70trust score out of 100
Newo
69AI phone and chat receptionist that books appointments and answers calls across 60+ languages, 24/7.
United StatesAdded 1mo ago
Freemiumfrom $299/mo
86trust score out of 100
AI phone agents that take inbound calls, dial out in batches, book appointments and transfer to a human
Added 2mo ago
PaidAPI
75trust score out of 100
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