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Synthflow vs ElevenLabs for AI phone agents

Short answer. Synthflow sells enterprise contracts that start at $30,000 a year. The final price depends on call volume, concurrency, telephony, integrations, security, and launch support. ElevenLabs Agents posts self-serve plans from $0 to $990 a month. Each plan includes call minutes, and added minutes cost $0.08 each. LLM use and your phone carrier bill on top at ElevenLabs. A small trade business can start on ElevenLabs today. Synthflow fits large call centers. We read both pricing pages on October 27, 2026.

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Price side by side

Item	Synthflow	ElevenLabs Agents
Posted self-serve plans	None	Free, Starter, Creator, Pro, Scale, Business
Entry price	Enterprise contracts from $30,000/yr	Free $0, 15 min, 4 concurrent calls
Mid plans	Quote	Creator $22/mo, 275 min. Pro $99/mo, 1,238 min
Top posted plan	Quote	Business $990/mo, 12,375 min, 40 concurrent calls
Added minutes	Scoped in contract	$0.08 per minute
Over the concurrency limit	Custom concurrency planning	Burst pricing at $0.16 per minute, up to 3 times the limit
LLM	Not listed on its own line	Billed on top, varies by model
Telephony	Synthflow telephony, SIP trunking, or approved enterprise telephony	No ElevenLabs fee. Your provider, such as Twilio or a SIP trunk, bills you
Text messages	Not listed	$0.003 each

Sources: Synthflow pricing and ElevenLabs Agents pricing, checked October 27, 2026. We read the ElevenLabs monthly billing view.

Two conflicts on the ElevenLabs page. The Starter plan ($6 a month) showed a first month price of $1 "Until Nov 1." A banner on the same page read "Ends September 30" for a credits offer at $1. The plan cards list "Additional Minutes" from Creator up, but the price table shows $0.080 per added minute on every plan, Free and Starter included. We report both as shown. Confirm with ElevenLabs before you buy.

What call volume costs, by our math

Minutes a month	ElevenLabs plan	ElevenLabs cost	Synthflow
1,000	Creator with added minutes	$80	From $2,500/mo ($30,000/yr)
10,000	Scale with added minutes	$799.96	From $2,500/mo
12,375	Business	$990	From $2,500/mo

ElevenLabs figures exclude LLM and phone carrier costs. At $0.08 per added minute, ElevenLabs Business reaches $2,500 a month at 31,250 minutes. That is $1,510 in added minutes on top of the $990 plan. Concurrency limits apply. Business allows 40 calls at once.

Which to pick

Pick ElevenLabs if you run a trade business, want to start this week, and take hundreds to a few thousand calls a month. Plan for LLM and carrier costs on top. Pick Synthflow if you run a large call operation and want an enterprise contract with SLAs, implementation, and custom concurrency. For a shop with a few phone lines, a $30,000 yearly floor is hard to justify. Compare both against the AI receptionist tools built for trades.

Compare more: Vapi vs ElevenLabs, Retell AI vs ElevenLabs, AI receptionist prices.

FAQ

Is ElevenLabs cheaper than Synthflow? For a small business, yes. ElevenLabs plans start at $0 and top out at $990 a month before custom pricing. Synthflow contracts start at $30,000 a year.

What does ElevenLabs charge per minute? $0.08 per added minute past your plan's included minutes. Burst calls over your concurrency limit cost $0.16 per minute. LLM use bills on top.

Does Synthflow have a self-serve plan? Its pricing page lists enterprise contracts from $30,000 a year and no self-serve plans.

Does ElevenLabs charge for phone calls? ElevenLabs says it adds no telephony fee. Your provider, such as Twilio or a SIP trunk, bills you for the carrier side.

How many calls can run at once on ElevenLabs? It depends on the plan: 4 on Free, 20 on Pro, 30 on Scale, and 40 on Business.

Checked 2026-10-27. Prices and policies change. Confirm on the source before you buy.