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Comparison LabCompare 27 voice AI platforms and components across seven buying contexts, with sourced capabilities, current price captures and visible unknowns.Voice AI Price Index: prices, evidence and historyUnderstand the complete voice-agent cost stack: models, voice, transcription, telephony, subscriptions, capacity and add-ons.Know the cost before the first callEstimate monthly voice-agent costs, AI minutes, setup expenses and volume scenarios using your own transparent assumptions.AI voice agents for dentalAppointments, rescheduling and after-hours calls—with a person ready for clinical questions. Explore call flows, safe automation, integrations, tests and cost considerations.

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ServiceAgent vs Vapi

ServiceAgent is positioned as a home-service front-office product combining call handling with business administration. Vapi is positioned as a developer-oriented orchestration platform for phone and web agents with configurable p

The decision in context

ServiceAgent is positioned as a home-service front-office product combining call handling with business administration. Vapi is positioned as a developer-oriented orchestration platform for phone and web agents with configurable providers. Start by deciding who owns the missing layers, then inspect the documented differences below.

7 jointly documented catalog fields. This measures evidence coverage, not equivalent quality or an overall winner.

Compare for the job

Test opening hours, booking conflicts and an unanswered transfer.

2 of 4 slots
ServiceAgentVapi
Decision signals / differences first

Start where the records differ.

6 of 8 priority fields differ

Values and evidence states are compared together. Shared facts follow the differences; Unknown never means No.

Selected platforms: buyer-critical differences before detailed dimensions
Decision pointServiceAgentVapi
Billing modelDifferent records
character-creditConditional · 2026-09-28
platform-plus-pass-throughVerified Yes · 2026-09-28Documented product/configuration only; see research notes · New Usage-only account
Billing unitDifferent records
Action credits;15credits/AI voice minute,2/SMS segment,5/ad creative,1/review replyVerified Yes · 2026-09-28
minuteVerified Yes · 2026-09-28Documented product/configuration only; see research notes · New Usage-only account
Bring your telephonyDifferent records
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
YesVerified Yes · 2026-09-28Documented product/configuration only; see research notes
Bring your modelDifferent records
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
YesVerified Yes · 2026-09-28Documented product/configuration only; see research notes
Warm transferDifferent records
YesVendor claim · 2026-09-28Vendor-described receptionist; current waitlist
YesVerified Yes · 2026-09-28Documented product/configuration only; see research notes
HIPAA pathDifferent records
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
YesVendor claim · 2026-09-28Organization-wide setting with compatible providers · Paid compliance add-on
Your requirements & next steps
Carried from your shortlist

Your requirements

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Ready-made / AI receptionist · Strict evidence mode

No personal requirements yet. Add criteria in Advanced Filter to prioritize this comparison.

Unknown ≠ No
Evidence, side by sideNo benchmark scores
ServiceAgentFull Platforms
VapiFull Platforms
Pricing model
ServiceAgent
character-creditConditional · 2026-09-28

Monthly bundle plus action/telecom credits;15credits/AI voice minute. Not a single all-in minute price.

Vapi
platform-plus-pass-throughVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Headline / base price
ServiceAgent
Launch $0; paid Core $49/month or $39/month billed yearlyVerified Yes · 2026-09-28

Growth119monthly/95annual-equivalent;Franchise349/279. Display separates monthly and annual commitment.

Vapi
$0.05/min Vapi hostingVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Billing unit
ServiceAgent
Action credits;15credits/AI voice minute,2/SMS segment,5/ad creative,1/review replyVerified Yes · 2026-09-28

Top-up credit price is$0.02–$0.04; platform fees, included credits and other actions must be modeled separately.

Vapi
minuteVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Platform fee
ServiceAgent
0/49/119/349 USD monthly (Launch/Core/Growth/Franchise)Verified Yes · 2026-09-28

Annual equivalents39/95/279requireyearlybilling;location/ad/paymentfees separate.

Vapi
$0 Usage-only; optional Core $29/mo; Pro 10% hosting spend with $999/mo minimumVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Included usage
ServiceAgent
0/2000/6000/20000action credits per monthVerified Yes · 2026-09-28

Different activities draw from credits; do not convert the entire allowance to guaranteed calling minutes.

Vapi
Usage-only: 4 concurrent lines for new accounts; this is not included call minutesVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Overage
ServiceAgent
$0.02–$0.04 per separately purchased creditVerified Yes · 2026-09-28

AI voice15credits/minute; top-up package and selected plan determine cost.

Vapi
Usage is metered; extra call lines $10/month eachVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Pass-through costs
ServiceAgent
SMS, campaigns and payment/other service fees varyVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · Core published offer; account availability requires confirmation
Vapi
LLM, transcriber, voice and carrier charges; HIPAA add-on $2,000/monthVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
Free offer
ServiceAgent
Launch platform plan $0; no included credits; current waitlistVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Core published offer; account availability requires confirmation
Vapi
$5 free creditsVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

New Usage-only account
Complete cost ceiling
ServiceAgent
UnknownUnknown after research · 2026-09-28

Variable credit purchase tiers, nonvoice consumption, fees and current waitlist prevent a guaranteed all-in voice rate.

Documented product/configuration only; see research notes · Core published offer; account availability requires confirmation
Vapi
UnknownUnknown after research · 2026-09-28

Provider choices, tokens, carrier and optional support/compliance fees are not fixed by minutes alone.

Documented product/configuration only; see research notes · New Usage-only account
What remains unresolved
ServiceAgent
Variable credit purchase tiers, nonvoice consumption, fees and current waitlist prevent a guaranteed all-in voice rate.Verified Yes · 2026-09-28

Research conclusion about cost completeness, not a vendor capability.

Documented product/configuration only; see research notes · Core published offer; account availability requires confirmation
Vapi
Provider choices, tokens, carrier and optional support/compliance fees are not fixed by minutes alone.Verified Yes · 2026-09-28

Research conclusion about cost completeness, not a vendor capability.

Documented product/configuration only; see research notes · New Usage-only account

Anyone with this link can view the encoded decision criteria.

Vendor documentation establishes a claim. Public model benchmarks are separate context, not measurements of these platforms.

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What to verify together.

ServiceAgent

The public site still carries a launch-soon banner; confirm availability before migrating calls.

Launch $0; paid Core $49/month or $39/month billed yearly · V3.3 evidence review · Core monthly subscription and action-credit allowance; current waitlist, not general availability

Excluded / confirm: Complete cost cannot be established from this reference. Variable credit purchase tiers, nonvoice consumption, fees and current waitlist prevent a guaranteed all-in voice rate. · SMS, campaigns and payment/other service fees vary

character-creditConditional · 2026-09-28

Monthly bundle plus action/telecom credits;15credits/AI voice minute. Not a single all-in minute price.

Read the complete profile →

Vapi

The $0.05 hosting charge is only one component of the call bill.

$0.05/min Vapi hosting · V3.3 evidence review · Hosting only; model, speech, carrier and compliance/support add-ons extra

Excluded / confirm: Complete cost cannot be established from this reference. Provider choices, tokens, carrier and optional support/compliance fees are not fixed by minutes alone. · LLM, transcriber, voice and carrier charges; HIPAA add-on $2,000/month

platform-plus-pass-throughVerified Yes · 2026-09-28

Reviewed current public offer; retain original billing scope and units.

Documented product/configuration only; see research notes · New Usage-only account
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The evidence overlap.

Both records have documented values for Product type, Technical setup, Published numeric pricing, Call summary, Webhooks, Checked within 30 days, Retained price snapshot. Matching availability does not measure behavior under your call conditions.

Run the same booking, tool failure and unsuccessful human-transfer cases. Record both outcomes and billable units before signing a deployment agreement.

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Editorial index gate: noindex-low-intent. Browseable utility pair. Independent demand evidence and unique editorial review have not passed the index gate.