Synthflow alternatives after its move to enterprise-only
Short answer: Synthflow now sells only annual enterprise agreements, with no free plan, trial or per-minute rate (Synthflow, 14 Nov 2026). For self-serve agents without code, start with Retell AI (pay-as-you-go, $10 credit) or ElevenLabs Agents (free plan with a workflow builder). PolyAI's self-serve plans start at $49 a month. For a simple receptionist, Dialzara starts at $29.
Is Synthflow really enterprise-only now?
Yes. As of 14 Nov 2026, Synthflow's pricing page says it "is sold as an annual enterprise agreement, scoped to your call volume" (plus your phone setup, integrations, security needs and launch support) and that "every new deployment starts on an Enterprise contract." It "has no free plan or trial and no rate by the minute," and it publishes no price.
On compliance, its FAQ lists "HIPAA (self-attested)" and says the Trust Center "lists SOC 2 Type 2". The page doesn't mention a BAA.
When did Synthflow change its pricing?
We found no Synthflow blog post, changelog entry or announcement about the switch, so this timeline rests on a single source: pricing tracker UsagePricing, which compares its own dated captures of the page (UsagePricing). The 2026 dates are capture dates, so each change happened on or before the date shown: - Jun 2024: flat monthly tiers (Starter, Pro, Growth, Agency) with a 14-day free trial. UsagePricing says it checked these older tiers against third-party write-ups. - 9 Jun 2026: pay-as-you-go per-minute pricing had replaced those tiers, with the Voice Engine at $0.09/min plus LLM charges, and legacy plans were grandfathered. - 24 Jun 2026: pay-as-you-go was gone, leaving one sales-led Enterprise plan; the page then said "Enterprise contracts start at $30,000 annually" (UsagePricing). - 2 Nov 2026: the page no longer published the $30,000 minimum.
Synthflow's page doesn't say what happens to existing self-serve accounts. If you're on one, ask before your renewal date.
Which Synthflow alternatives compare best? (as of 14 Nov 2026)
| Alternative | Type | Starts at | Free to start | Watch out |
|---|---|---|---|---|
| Retell AI | Platform: prompt or flow agents | $0.117/min on our setup | $10 credit | Bills each component |
| ElevenLabs Agents | Platform with a workflow builder | $0 (15 min) or $6/month (75 min) | Free plan | LLM billed on top |
| PolyAI | Agent plans with a build assistant | $49/month (250 min) | Free trial | BAA on Enterprise only |
| Vapi | Developer platform | $0.05/min + providers | $5 credit | Visual Workflows retired |
| My AI Front Desk | Receptionist | $99/month (200 min) | 7-day trial | $0.495 per included minute |
| Phonely | Receptionist | $50/month | Not stated | Minute counts conflict |
| Dialzara | Receptionist | $29/month (60 min) | 7-day trial | $0.48/min at the cap |
Prices change often, so check each vendor's page before you sign up.
Which self-serve alternatives are worth a look?
1. Retell AI: closest to Synthflow's old pay-as-you-go
Why switch: No commitment, $10 in free credit, and agents built as a single prompt or as a conversation flow of nodes, each with its own instructions (Retell docs). It has native GoHighLevel, HubSpot, Cal.com and Calendly links (Retell).
Pricing (as of 14 Nov 2026): $0.055/min Voice Infra plus LLM, voice and $0.015/min US telephony: $0.117/min on Kall's standard setup, plus $2/month per number.
Watch out: It's a developer platform at heart, so you choose and pay for each component. Retell recommends starting with a single prompt agent, so expect to write a prompt.
2. ElevenLabs Agents: a free plan with a workflow builder
Why switch: The free plan includes 15 agent minutes, 4 calls at once, the Workflow Builder, a knowledge base and a website widget. Paid plans start at $6/month.
Pricing (as of 14 Nov 2026): Starter $6 (75 minutes), Creator $22 (275), Pro $99 (1,238), Scale $299 (3,738). Extra minutes cost $0.08.
Watch out: The LLM is billed on top at provider rates and telephony "at cost", so your bill isn't fixed (ElevenLabs docs). BAAs are Enterprise-only.
3. PolyAI: self-serve plans with an AI build assistant
Why switch: Plans come with a free trial, and an assistant called Wren helps build the agent. Essentials includes 1 number plus Google Calendar, Calendly, Cal.com and Zapier; Plus adds HubSpot, Zoho CRM and Dynamics 365.
Pricing (as of 14 Nov 2026): Essentials $49/month (250 minutes, 5 calls at once), Plus $199 (1,000 minutes), Scale $299 per location (1,500 minutes pooled). Extra minutes cost 30¢, 25¢ and 20¢.
Watch out: HIPAA with a BAA, SSO and PCI card capture are Enterprise-only, and the page doesn't state the trial length.
4. Vapi: self-serve, but code-first
Why switch: Sign up with $5 in credit and 1 free US number, then build in the dashboard or with Composer, which builds an agent from a plain-language chat (Vapi docs).
Pricing (as of 14 Nov 2026): $0.05/min hosting plus transcription, LLM and voice at cost: $0.082 to $0.129/min on our standard setup.
Watch out: Vapi retired its visual Workflows on 18 Aug 2026 and points new builds to Assistants or Squads (Vapi docs). Composer is "currently in Alpha", and HIPAA costs $2,000/month. More options: Best Vapi alternatives.
5. My AI Front Desk: a receptionist with an agency tier
Why switch: $99/month ($79 billed annually) buys 200 voice minutes, 100 chatbot conversations and 400 texts, with a 7-day trial, 20+ languages and Zapier. A Partner/Enterprise tier "for scaling teams & agencies" adds API access and voice overage "as low as 7 credits" a minute ($0.07).
Pricing (as of 14 Nov 2026): $99 for 200 minutes works out to $0.495 a minute; overage is 25 credits ($0.25) a minute.
Watch out: An included minute costs about double an overage minute, and the pricing page doesn't mention HIPAA.
6. Phonely: unlimited concurrency from $50
Why switch: Starter costs $50/month ($33 billed annually) with 3 free numbers and unlimited calls at once; Pro is $150 ($100 annually) with 5 numbers. Premium voices cover "50+ languages".
Pricing (as of 14 Nov 2026): $0.20 to $0.25 per included minute on Starter, depending on which figure on the page is right; overage runs $0.25 to $0.35/min.
Watch out: The page lists both 200 and 250 Starter minutes, and both 650 and 750 on Pro. Its FAQ says it can sign a BAA "for Enterprise customers", and the page doesn't mention a free trial.
7. Dialzara: the cheapest way in
Why switch: Business Lite costs $29/month for 60 minutes in 10 languages, with a 7-day free trial and "no setup fees". Agencies can ask about white label at custom pricing.
Pricing (as of 14 Nov 2026): $29 for 60 minutes is $0.48/min; Business Elite's $349 for 1,000 minutes is $0.35/min.
Watch out: Overage costs the same as the included rate ($0.35 to $0.48/min), and the page doesn't say whether a phone number is included or mention HIPAA.
For more receptionist picks, see Best AI receptionists for small businesses. For the all-in cost math, see AI voice agent pricing per minute: the real all-in cost.
How we picked
- Self-serve: published prices and sign-up without a sales call, as of 14 Nov 2026.
- Buildable without code: a prompt, a flow or workflow builder, a build assistant, or a receptionist you configure.
- A free credit, plan or trial.
- Sales-only tools left out, which also rules out Thoughtly.
- Research only: we haven't test-called these yet. Method: How Kall tests and ranks AI voice agents.
Sources
- Pricing, Synthflow, 14 Nov 2026
- Synthflow pricing history, UsagePricing, 14 Nov 2026
- Synthflow removes pay-as-you-go, goes Enterprise-only, UsagePricing, 24 Jun 2026
- Pricing, Retell AI, 14 Nov 2026
- Choose an agent type, Retell AI docs, 14 Nov 2026
- Integrations, Retell AI, 14 Nov 2026
- ElevenAgents pricing, ElevenLabs, 14 Nov 2026
- Supported LLMs, ElevenLabs docs, 14 Nov 2026
- Pricing, PolyAI, 14 Nov 2026
- Pricing, Vapi, 14 Nov 2026
- Composer, Vapi docs, 14 Nov 2026
- Workflows migration guide, Vapi docs, 14 Nov 2026
- Pricing, My AI Front Desk, 14 Nov 2026
- Pricing, Phonely, 14 Nov 2026
- Pricing, Dialzara, 14 Nov 2026
FAQ
Does Synthflow still have a free plan or trial?
No. As of 14 Nov 2026 Synthflow's pricing page says it has no free plan or trial and no per-minute rate, and that every new deployment starts on an annual enterprise contract.
When did Synthflow go enterprise-only?
Only one source dates it: pricing tracker UsagePricing. Its snapshots show pay-as-you-go on 9 Jun 2026 and an Enterprise-only page on 24 Jun 2026, so the switch came in between. Its 2 Nov 2026 snapshot no longer showed the $30,000 annual minimum. We found no Synthflow announcement.
What is the best self-serve alternative to Synthflow?
Retell AI and ElevenLabs Agents are the closest self-serve swaps. Retell is pay-as-you-go with $10 in credits; ElevenLabs has a free plan with 15 agent minutes and a workflow builder, as of 14 Nov 2026.
What is the cheapest no-code AI receptionist instead of Synthflow?
Dialzara's Business Lite plan costs $29 a month for 60 minutes, with a 7-day free trial. Phonely starts at $50 a month and My AI Front Desk at $99 a month for 200 minutes, as of 14 Nov 2026.
Related
- Best Vapi alternatives7 Vapi alternatives with pricing as of 14 Nov 2026: Retell AI, Bland, ElevenLabs, Deepgram, PolyAI, LiveKit and Pipecat, with a watch-out for each.
- Best AI receptionists for small businesses8 AI receptionists for small businesses compared on price, free trial, booking, integrations, call transfer and languages, as of 14 Nov 2026.
- AI voice agent pricing per minute: the real all-in costWhat AI voice agents and receptionists really cost per minute once platform, LLM, voice, transcription and phone line are added. 15 platforms.
- Best Bland AI alternatives7 Bland AI alternatives with pricing as of 14 Nov 2026, why you might switch from Bland's $0.14/min rate, and what to watch out for with each.
Ranks are never for sale. This page has no affiliate links and no paid placements. Prices change often: check the vendor's pricing page before you buy.