Synthflow pricing explained (2026): the real cost
verified 2026-05-31No monthly subscription on the entry plan, you pay per minute and the price is the SUM of stacked components, not a single rate. A typical minute runs voice engine $0.09 plus an LLM ($0.02 to $0.05) plus telephony ($0.00 with BYO Twilio to $0.02 on Synthflow-managed Twilio), landing roughly $0.15 to $0.24/min all-in, plus $1.50/mo per phone number. Concurrency beyond the included 5 calls costs $20/unit/month, so a small operation running a few thousand minutes can land in the low hundreds per month before any add-ons. Prices verified 2026-05-31 against synthflow.ai. prices change often, verify live
The tiers
Monthly and annual. The unit you pay against, per plan.
| tier | monthly | annual | what's included | unit |
|---|---|---|---|---|
| Pay As You Go | $0 base + usageverify live | n/a | Unlimited agents and API integrations, 5 concurrent calls (expandable at $20/call/mo), text channels (API, Widget, SMS, WhatsApp), ticket support, no guaranteed SLA | per minute (usage-based) |
| Enterprise | Custom (contact sales)verify live | n/a | Built for 10,000+ minutes/month. Unlimited concurrent calls, 99.99% SLA, dedicated Slack support with a Solution Architect, white-label and reseller toolkit included | custom negotiated |
// pools and per-unit rates are volatile · verified 2026-05-31 · cells flagged verify live link to the live vendor page
The advertised per-minute rate ($0.
The advertised per-minute rate ($0.09 voice engine) is NOT your real cost, because LLM and telephony minutes stack on top, so budget $0.15 to $0.24/min all-in. Optional add-ons like Performance Routing and Global Low Latency Edge each add $0.04/min, quietly pushing the rate higher. White-label is a $2,000/month standalone add-on (only included inside Enterprise), and in-house native telephony is Enterprise-only.
See live pricing on Synthflow →Worth it if
- You want to build and deploy AI phone agents that handle real inbound and outbound calls, booking appointments, qualifying leads, and answering support questions, without writing code, ideally with white-label rebilling for agency clients.
- Your usage stays inside the included allowance.
- You value No-code voice phone agents over raw lowest cost.
Look elsewhere if
- The advertised per-minute rate ($0.09 voice engine) is NOT your real cost, because LLM and telephony minutes stack on top, so budget $0.15 to $0.24/min all-in. Optional add-ons like Performance Routing and Global Low Latency Edge each add $0.04/min, quietly pushing the rate higher. White-label is a $2,000/month standalone add-on (only included inside Enterprise), and in-house native telephony is Enterprise-only.
- You're highly cost-sensitive at scale.
- A cheaper tool in the comparison covers your use case.
Ready to try Synthflow?
Start on the free tier (Free to build/test, pay on launch), then size your plan with the numbers above.
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Questions
How much does Synthflow really cost?
No monthly subscription on the entry plan, you pay per minute and the price is the SUM of stacked components, not a single rate. A typical minute runs voice engine $0.09 plus an LLM ($0.02 to $0.05) plus telephony ($0.00 with BYO Twilio to $0.02 on Synthflow-managed Twilio), landing roughly $0.15 to $0.24/min all-in, plus $1.50/mo per phone number. Concurrency beyond the included 5 calls costs $20/unit/month, so a small operation running a few thousand minutes can land in the low hundreds per month before any add-ons.
Does Synthflow have a free tier?
Free tier: Free to build/test, pay on launch.
What's the catch with Synthflow's pricing?
The advertised per-minute rate ($0.09 voice engine) is NOT your real cost, because LLM and telephony minutes stack on top, so budget $0.15 to $0.24/min all-in. Optional add-ons like Performance Routing and Global Low Latency Edge each add $0.04/min, quietly pushing the rate higher. White-label is a $2,000/month standalone add-on (only included inside Enterprise), and in-house native telephony is Enterprise-only.
Is Synthflow worth it?
Synthflow is worth it if you specifically need No-code voice phone agents. That's where it beats the alternatives. No monthly subscription on the entry plan, you pay per minute and the price is the SUM of stacked components, not a single rate. A typical minute runs voice engine $0.09 plus an LLM ($0.02 to $0.05) plus telephony ($0.00 with BYO Twilio to $0.02 on Synthflow-managed Twilio), landing roughly $0.15 to $0.24/min all-in, plus $1.50/mo per phone number. Concurrency beyond the included 5 calls costs $20/unit/month, so a small operation running a few thousand minutes can land in the low hundreds per month before any add-ons. If your usage is high-volume or budget is the priority, a cheaper tool in the comparison will do the same work for less.