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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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PolyAI vs Speechmatics

PolyAI is positioned as enterprise dialog-agent platform with a builder, developer tooling and system integrations. Speechmatics is positioned as recognition APIs with cloud and private-deployment choices for transcription-heavy p

The decision in context

PolyAI is positioned as enterprise dialog-agent platform with a builder, developer tooling and system integrations. Speechmatics is positioned as recognition APIs with cloud and private-deployment choices for transcription-heavy products. Start by deciding who owns the missing layers, then inspect the documented differences below.

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

6 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
PolyAISpeechmatics
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 pointPolyAISpeechmatics
Billing modelDifferent records
per-minuteVerified Yes · 2026-09-28
component-stackVerified Yes · 2026-09-28
Billing unitDifferent records
Voice agent minuteVerified Yes · 2026-09-28
Credits (1 credit = $1); product-specific per-hour rates, calculated to the secondVerified Yes · 2026-09-28
Bring your telephonyDifferent records
YesConditional · 2026-09-28
UnknownUnknown after research · 2026-09-28Current captured product corpus; not a universal unsupported claim
Bring your modelDifferent records
YesConditional · 2026-09-28BYOM integration setup
Not applicableNot applicable · 2026-09-28
Warm transferShared state
UnknownUnknown after research · 2026-09-28
UnknownUnknown after research · 2026-09-28Current captured product corpus; not a universal unsupported claim
HIPAA pathShared state
YesVendor claim · 2026-09-28Supplier enterprise platform claim
YesVendor claim · 2026-09-28Speechmatics vendor statement; service/contract scope needs review
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
PolyAIEnterprise Platforms
Pricing model
PolyAI
per-minuteVerified Yes · 2026-09-28

Sales-led per-minute contract rate, not a public numerical rate.

Speechmatics
component-stackVerified Yes · 2026-09-28

Credit billing: one credit equals $1; usage measured by product hours/seconds. This does not mean a character-priced TTS rate or flat agent minute rate.

Headline / base price
PolyAI
UnknownUnknown after research · 2026-09-28

Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.

Speechmatics
UnknownUnknown after research · 2026-09-28

Price page exposes a Pro 0.129 figure without a clear unit in captured content; exact model rate and enterprise commitment require confirmation.

Billing unit
PolyAI
Voice agent minuteVerified Yes · 2026-09-28

Published unit; precise fee and minimum quote unresolved.

Speechmatics
Credits (1 credit = $1); product-specific per-hour rates, calculated to the secondVerified Yes · 2026-09-28

Billing currency versus usage unit kept distinct.

Platform fee
PolyAI
UnknownUnknown after research · 2026-09-28

Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.

Speechmatics
Pro self-serve PAYG; Enterprise contract billingVerified Yes · 2026-09-28

No fixed subscription number inferred from credit billing.

Included usage
PolyAI
Maintenance, upgrades, monitoring and24/7support in quoted plansVerified Yes · 2026-09-28

No included minute allowance published in reviewed page.

Speechmatics
$100 initial credits; not a recurring monthly speech allowanceVerified Yes · 2026-09-28

Existing pre-August accounts have different transition grant.

Overage
PolyAI
UnknownUnknown after research · 2026-09-28

Sales-led per-minute service and build credits are documented; no public complete rate/commitment, recurring free entitlement or provider cost inclusions established.

Speechmatics
PAYG usage after grants billed monthly in arrearsVerified Yes · 2026-09-28

No forced per-minute bundle conversion.

Pass-through costs
PolyAI
UnknownUnknown after research · 2026-09-28

Sales-led per-minute service and build credits are documented; no public complete rate/commitment, recurring free entitlement or provider cost inclusions established.

Speechmatics
External LLM, orchestrator, telephony and application hostingVerified Yes · 2026-09-28

Buyer-selected component costs sit outside speech API usage.

Free offer
PolyAI
UnknownNot researched

Not yet researched against this buyer-critical field standard.

Speechmatics
UnknownNot researched

Not yet researched against this buyer-critical field standard.

Complete cost ceiling
PolyAI
UnknownUnknown after research · 2026-09-28

Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.

Speechmatics
UnknownUnknown after research · 2026-09-28

Speech component credits and contract-specific workloads do not determine full voice-agent cost; external LLM/hosting/telephony unknown.

What remains unresolved
PolyAI
UnknownUnknown after research · 2026-09-28

Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.

Speechmatics
UnknownUnknown after research · 2026-09-28

Speech component credits and contract-specific workloads do not determine full voice-agent cost; external LLM/hosting/telephony unknown.

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.

Open saved comparison ↗

What to verify together.

PolyAI

The public pricing page gives a billing basis, not a numeric quote.

Custom quote / current rate unresolved · V3.3 evidence review · Contract-defined minute billing; no public numeric quote

Excluded / confirm: Complete cost cannot be established from this reference. Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling. · Provider, carrier and custom contract terms require separate verification

per-minuteVerified Yes · 2026-09-28

Sales-led per-minute contract rate, not a public numerical rate.

Read the complete profile →

Speechmatics

The lowest advertised batch price is not a real-time price.

Pro self-serve PAYG; Enterprise contract billing · V3.3 evidence review · STT exact-second metering billed in audio hours; no verified current complete rate schedule

Excluded / confirm: Complete cost cannot be established from this reference. Speech component credits and contract-specific workloads do not determine full voice-agent cost; external LLM/hosting/telephony unknown. · External LLM, orchestrator, telephony and application hosting

component-stackVerified Yes · 2026-09-28

Credit billing: one credit equals $1; usage measured by product hours/seconds. This does not mean a character-priced TTS rate or flat agent minute rate.

Read the complete profile →

The evidence overlap.

Both records have documented values for Product type, Technical setup, Pricing model, Transcripts, 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.

Build a buyer-operated pilot →

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