Explore voiceagent.best
Estimate costOur independent methodology

Start here

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.

Compare Lab

PolyAI vs Rime

PolyAI is positioned as enterprise dialog-agent platform with a builder, developer tooling and system integrations. Rime is positioned as conversational TTS with separate models and enterprise deployment options. Start by deciding

The decision in context

PolyAI is positioned as enterprise dialog-agent platform with a builder, developer tooling and system integrations. Rime is positioned as conversational TTS with separate models and enterprise deployment options. Start by deciding who owns the missing layers, then inspect the documented differences below.

Enterprise Platforms and Voice Engines 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
PolyAIRime
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 pointPolyAIRime
Billing modelDifferent records
per-minuteVerified Yes · 2026-09-28
character-creditVerified Yes · 2026-09-28
Billing unitDifferent records
Voice agent minuteVerified Yes · 2026-09-28
1,000 charactersVerified Yes · 2026-09-28
Bring your telephonyDifferent records
YesConditional · 2026-09-28
Not applicableNot applicable · 2026-09-28Rime TTS component
Bring your modelDifferent records
YesConditional · 2026-09-28BYOM integration setup
Not applicableNot applicable · 2026-09-28Rime TTS component
Warm transferDifferent records
UnknownUnknown after research · 2026-09-28
Not applicableNot applicable · 2026-09-28Rime TTS component
WebhooksDifferent records
YesConditional · 2026-09-28Unknown
UnknownUnknown after research · 2026-09-28UnknownCurrent captured product corpus; not a universal unsupported claim
Your requirements & next steps
Carried from your shortlist

Your requirements

Edit requirements →

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
RimeVoice Engines
Pricing model
PolyAI
per-minuteVerified Yes · 2026-09-28

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

Rime
character-creditVerified Yes · 2026-09-28

Mist and Coda are billed per characters. Approximate minutes are supplier illustrations, not normalized all-in phone rates.

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

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

Rime
Mist $0.03 / 1,000 characters; Coda $0.05 / 1,000 charactersVerified Yes · 2026-09-28

API synthesis rates; Enterprise separately quoted.

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

Published unit; precise fee and minimum quote unresolved.

Rime
1,000 charactersVerified Yes · 2026-09-28

Do not convert by assumed speaking rate.

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

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

Rime
UnknownUnknown after research · 2026-09-28

Reviewed field-specific candidate passages and product, API, pricing, privacy, deployment, metrics and integration documentation. Matched vocabulary examples are not company/commercial facts; HTTP routing is not call routing; Slack support is not a Slack product integration; OTel metrics do not establish distributed traces. Public sources do not resolve this exact commercial/control detail.

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

No included minute allowance published in reviewed page.

Rime
UnknownUnknown after research · 2026-09-28

Reviewed field-specific candidate passages and product, API, pricing, privacy, deployment, metrics and integration documentation. Matched vocabulary examples are not company/commercial facts; HTTP routing is not call routing; Slack support is not a Slack product integration; OTel metrics do not establish distributed traces. Public sources do not resolve this exact commercial/control detail.

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.

Rime
UnknownUnknown after research · 2026-09-28

Reviewed field-specific candidate passages and product, API, pricing, privacy, deployment, metrics and integration documentation. Matched vocabulary examples are not company/commercial facts; HTTP routing is not call routing; Slack support is not a Slack product integration; OTel metrics do not establish distributed traces. Public sources do not resolve this exact commercial/control detail.

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.

Rime
Separate STT, LLM, application hosting and carrier/transport billsVerified Yes · 2026-09-28

These are buyer stack costs, not verified pass-through charges invoiced by Rime.

Free offer
PolyAI
UnknownNot researched

Not yet researched against this buyer-critical field standard.

Rime
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.

Rime
UnknownUnknown after research · 2026-09-28

TTS characters do not establish complete agent monthly cost or minute cost. Recognition, reasoning, hosting and telephony are separate.

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

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

Rime
UnknownUnknown after research · 2026-09-28

TTS characters do not establish complete agent monthly cost or minute cost. Recognition, reasoning, hosting and telephony are separate.

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 →

Rime

The free allowance and catalog counts conflict on official pages.

Mist $0.03 / 1,000 characters; Coda $0.05 / 1,000 characters · V3.3 evidence review · Mist TTS; Coda separately priced; catalog and free-credit conflicts remain

Excluded / confirm: Complete cost cannot be established from this reference. TTS characters do not establish complete agent monthly cost or minute cost. Recognition, reasoning, hosting and telephony are separate. · Separate STT, LLM, application hosting and carrier/transport bills

character-creditVerified Yes · 2026-09-28

Mist and Coda are billed per characters. Approximate minutes are supplier illustrations, not normalized all-in phone rates.

Read the complete profile →

The evidence overlap.

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