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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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Fish Audio vs ServiceAgent

Fish Audio is positioned as a developer speech API and creative voice workspace; paid TTS usage is metered in UTF-8 bytes. ServiceAgent is positioned as a home-service front-office product combining call handling with business adm

The decision in context

Fish Audio is positioned as a developer speech API and creative voice workspace; paid TTS usage is metered in UTF-8 bytes. 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.

Voice Engines and Full Platforms are different product categories. An underlying engine or framework is not a complete substitute for a deployed agent workflow.

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
Fish AudioServiceAgent
Decision signals / differences first

Start where the records differ.

5 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 pointFish AudioServiceAgent
Billing modelDifferent records
component-stackVerified Yes · 2026-09-28
character-creditConditional · 2026-09-28
Billing unitDifferent records
TTS: million UTF-8 bytes; ASR: audio hours; Agents: conversation minutesVerified Yes · 2026-09-28
Action credits;15credits/AI voice minute,2/SMS segment,5/ad creative,1/review replyVerified Yes · 2026-09-28
Bring your telephonyDifferent records
YesVerified Yes · 2026-09-28
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
Bring your modelDifferent records
YesVerified Yes · 2026-09-28
UnknownUnknown after research · 2026-09-28Documented product/configuration only; see research notes
Warm transferDifferent records
YesConditional · 2026-09-28Phone transport and carrier-dependent transfer
YesVendor claim · 2026-09-28Vendor-described receptionist; current waitlist
HIPAA pathShared state
UnknownUnknown after research · 2026-09-28
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

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

Unknown ≠ No
Evidence, side by sideNo benchmark scores
Fish AudioVoice Engines
ServiceAgentFull Platforms
Pricing model
Fish Audio
component-stackVerified Yes · 2026-09-28

TTS uses UTF-8 bytes, ASR audio hours, Agents minutes plus carrier/model/add-ons. Multiple products must not share a fabricated normalized unit.

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
Fish Audio
TTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surchargesVerified Yes · 2026-09-28

Free TTS model and Agents promotional basic LLM scope are separate.

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
Fish Audio
TTS: million UTF-8 bytes; ASR: audio hours; Agents: conversation minutesVerified Yes · 2026-09-28

Each product keeps its own 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.

Platform fee
Fish Audio
No API subscription fees or monthly minimumsVerified Yes · 2026-09-28

API access; managed numbers have separate rental and enterprise agreement may differ.

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
Fish Audio
One-time $5 Agents trial balance; preview calls freeVerified Yes · 2026-09-28

Real sessions consume balance including relevant carrier/model charges; no monthly included minutes.

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
Fish Audio
Metered charges debit prepaid API credit after trial balanceVerified Yes · 2026-09-28

Destination, transfer and selected model affect cost; no complete ceiling.

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
Fish Audio
Phone destination surcharge, $1.20/month managed number, cold $0.015/min or warm $0.025/min post-transfer, non-basic LLM tokens; BYO carrier separateVerified Yes · 2026-09-28

Rates have explicit event/destination scope, not a single maximum.

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
Fish Audio
UnknownNot researched

Not yet researched against this buyer-critical field standard.

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
Fish Audio
UnknownUnknown after research · 2026-09-28

Call mix, destination, transfer time, selected model/token usage and separate speech products prevent a universal complete monthly/minute 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
What remains unresolved
Fish Audio
UnknownUnknown after research · 2026-09-28

Call mix, destination, transfer time, selected model/token usage and separate speech products prevent a universal complete monthly/minute ceiling.

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.

Fish Audio

UTF-8 bytes and characters are not interchangeable for multilingual scripts.

TTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surcharges · V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing

Excluded / confirm: Complete cost cannot be established from this reference. Call mix, destination, transfer time, selected model/token usage and separate speech products prevent a universal complete monthly/minute ceiling. · Phone destination surcharge, $1.20/month managed number, cold $0.015/min or warm $0.025/min post-transfer, non-basic LLM tokens; BYO carrier separate

component-stackVerified Yes · 2026-09-28

TTS uses UTF-8 bytes, ASR audio hours, Agents minutes plus carrier/model/add-ons. Multiple products must not share a fabricated normalized unit.

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, 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-cross-category. Different product layers. This pair is useful for architecture inspection, not a like-for-like purchase ranking.