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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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Hermes vs ServiceAgent

Hermes is positioned as an agency operations layer bundling voice providers, client workspaces and billing. ServiceAgent is positioned as a home-service front-office product combining call handling with business administration. St

The decision in context

Hermes is positioned as an agency operations layer bundling voice providers, client workspaces and billing. ServiceAgent is positioned as a home-service front-office product combining call handling with business administration. Start by deciding who owns the missing layers, then inspect the documented differences below.

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

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Test opening hours, booking conflicts and an unanswered transfer.

2 of 4 slots
HermesServiceAgent
Decision signals / differences first

Start where the records differ.

4 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 pointHermesServiceAgent
Billing modelDifferent records
monthly-bundleVerified Yes · 2026-09-28Documented product/configuration only; see research notes · Private beta; Starter
character-creditConditional · 2026-09-28
Billing unitDifferent records
monthVerified Yes · 2026-09-28Documented product/configuration only; see research notes · Private beta; Starter
Action credits;15credits/AI voice minute,2/SMS segment,5/ad creative,1/review replyVerified Yes · 2026-09-28
Warm transferDifferent records
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
YesVendor claim · 2026-09-28Vendor-described receptionist; current waitlist
WebhooksDifferent records
YesVendor claim · 2026-09-28API / webhookDocumented product/configuration only; see research notes
YesVerified Yes · 2026-09-28API / webhookLegacy help articles versus current Franchise pricing must be confirmed
Bring your telephonyShared state
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
Bring your modelShared state
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
Your requirements & next steps
Carried from your shortlist

Your requirements

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Ready-made / AI receptionist · Strict evidence mode

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Unknown ≠ No
Evidence, side by sideNo benchmark scores
HermesFull Platforms
ServiceAgentFull Platforms
Pricing model
Hermes
monthly-bundleVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
ServiceAgent
character-creditConditional · 2026-09-28

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

Headline / base price
Hermes
Starter $149/monthVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
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.

Billing unit
Hermes
monthVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
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.

Platform fee
Hermes
Starter $149; Business $399; Agency $699/month; Enterprise customVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
ServiceAgent
0/49/119/349 USD monthly (Launch/Core/Growth/Franchise)Verified Yes · 2026-09-28

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

Included usage
Hermes
Starter 300; Business 1,000; Agency 1,650 minutesVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
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.

Overage
Hermes
UnknownConflicting evidence · 2026-09-28

Official overage rates conflict, messaging pass-through varies and beta account terms need confirmation.

Documented product/configuration only; see research notes · Private beta; Starter
ServiceAgent
$0.02–$0.04 per separately purchased creditVerified Yes · 2026-09-28

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

Pass-through costs
Hermes
A2P messaging pass-through and customer billing configuration varyVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
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
Free offer
Hermes
UnknownUnknown after research · 2026-09-28

Official overage rates conflict, messaging pass-through varies and beta account terms need confirmation.

Private beta; Starter
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
Complete cost ceiling
Hermes
UnknownUnknown after research · 2026-09-28

Official overage rates conflict, messaging pass-through varies and beta account terms need confirmation.

Documented product/configuration only; see research notes · Private beta; Starter
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
What remains unresolved
Hermes
Official overage rates conflict, messaging pass-through varies and beta account terms need confirmation.Verified Yes · 2026-09-28

Research conclusion about cost completeness, not a vendor capability.

Documented product/configuration only; see research notes · Private beta; Starter
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

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.

Hermes

The service is advertised as a private beta with public launch pending.

Starter $149/month · V3.3 evidence review · Starter private beta subscription; unresolved overage scope

Excluded / confirm: Complete cost cannot be established from this reference. Official overage rates conflict, messaging pass-through varies and beta account terms need confirmation. · A2P messaging pass-through and customer billing configuration vary

monthly-bundleVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Private beta; Starter
Read the complete profile →

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 →

The evidence overlap.

Both records have documented values for Product type, Published numeric pricing, 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-insufficient-evidence. Fewer than five jointly documented fields. More verified comparable evidence is required before indexing.