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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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Cognigy vs Hume AI

Cognigy is positioned as enterprise agent workflows and Voice Gateway for existing contact-center environments. Hume AI is positioned as hume TTS and EVI API sunset: announced access end November 13, 2026 at 05:01 UTC. Retained fo

The decision in context

Cognigy is positioned as enterprise agent workflows and Voice Gateway for existing contact-center environments. Hume AI is positioned as hume TTS and EVI API sunset: announced access end November 13, 2026 at 05:01 UTC. Retained for historical comparison and migration research. 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.

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

TTS + EVI API sunset · Announced end: 13 Nov 2026, 05:01 UTC. Read notice & sources →

Compare for the job

Test opening hours, booking conflicts and an unanswered transfer.

2 of 4 slots
CognigyHume AI
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 pointCognigyHume AI
Billing modelDifferent records
custom-sales-ledVerified Yes · 2026-09-28
monthly-bundleVerified Yes · 2026-09-28
Billing unitDifferent records
UnknownUnknown after research · 2026-09-28
Monthly subscription + EVI minutes / TTS characters / supplemental LLM usageVerified Yes · 2026-09-28
Bring your telephonyDifferent records
YesConditional · 2026-09-28Voice Gateway
YesVerified Yes · 2026-09-28
WebhooksDifferent records
YesConditional · 2026-09-28Unknown
YesVerified Yes · 2026-09-28API / webhook
Bring your modelShared state
YesVerified Yes · 2026-09-28
YesVerified Yes · 2026-09-28
Warm transferShared state
UnknownUnknown after research · 2026-09-28
UnknownUnknown after research · 2026-09-28
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
CognigyEnterprise Platforms
Hume AIVoice Engines
Pricing model
Cognigy
custom-sales-ledVerified Yes · 2026-09-28

Sales-led enterprise component deployment; no public complete rate table in captured product documentation.

Hume AI
monthly-bundleVerified Yes · 2026-09-28

Subscription includes TTS/EVI/Voice allowances; overage and managed external LLM usage add cost.

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

Exact licensed components, speech/model/carrier pass-through and enterprise minimum require a quote.

Hume AI
$3/month Starter; included EVI minutes and overage depend on planVerified Yes · 2026-09-28

Free plan exists; paid entry is not a complete phone-call bill.

Billing unit
Cognigy
UnknownUnknown after research · 2026-09-28

Exact licensed components, speech/model/carrier pass-through and enterprise minimum require a quote.

Hume AI
Monthly subscription + EVI minutes / TTS characters / supplemental LLM usageVerified Yes · 2026-09-28

Incompatible product allowances are not collapsed into one all-in minute price.

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

Exact licensed components, speech/model/carrier pass-through and enterprise minimum require a quote.

Hume AI
$0 Free; $3 Starter; $14 Creator regular; $70 Pro; $200 Scale; $500 BusinessVerified Yes · 2026-09-28

First-month Creator promotion is separate from regular price; Enterprise custom.

Included usage
Cognigy
UnknownUnknown after research · 2026-09-28

Enterprise product and trial documentation reviewed; no complete current commercial schedule/eligibility or bundled provider costs established. Trial Knowledge AI does not inherit contracted SLA.

Hume AI
Starter: 40 EVI minutes; TTS character allowance separateVerified Yes · 2026-09-28

Plan-scoped EVI allowance; does not include every third-party carrier/model charge.

Starter
Overage
Cognigy
UnknownUnknown after research · 2026-09-28

Enterprise product and trial documentation reviewed; no complete current commercial schedule/eligibility or bundled provider costs established. Trial Knowledge AI does not inherit contracted SLA.

Hume AI
Plan-specific usage rates after included allowancesVerified Yes · 2026-09-28

TTS characters, EVI minutes and supplemental model usage remain separate.

Pass-through costs
Cognigy
Carrier and speech-provider subscription costs may applyConditional · 2026-09-28

Barge-in can increase speech subscription costs; contract determines payment route.

Hume AI
Hume-managed external LLM usage extra; BYO key/custom model paid outside Hume; Twilio separateVerified Yes · 2026-09-28

Hume not charging BYO LLM usage does not make the provider free.

Free offer
Cognigy
UnknownNot researched

Not yet researched against this buyer-critical field standard.

Hume AI
UnknownNot researched

Not yet researched against this buyer-critical field standard.

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

Exact licensed components, speech/model/carrier pass-through and enterprise minimum require a quote.

Hume AI
UnknownUnknown after research · 2026-09-28

Selected external LLM, carrier, token/character consumption and overages prevent a complete cost ceiling from monthly minutes alone.

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

Exact licensed components, speech/model/carrier pass-through and enterprise minimum require a quote.

Hume AI
UnknownUnknown after research · 2026-09-28

Selected external LLM, carrier, token/character consumption and overages prevent a complete cost ceiling from monthly minutes alone.

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.

Cognigy

No public unit price was established; request itemized platform, speech, carrier and support costs.

Custom quote / current rate unresolved · V3.3 evidence review · Enterprise contract; complete public numeric schedule unavailable

Excluded / confirm: Complete cost cannot be established from this reference. Exact licensed components, speech/model/carrier pass-through and enterprise minimum require a quote. · Carrier and speech-provider subscription costs may apply

custom-sales-ledVerified Yes · 2026-09-28

Sales-led enterprise component deployment; no public complete rate table in captured product documentation.

Read the complete profile →

Hume AI

VoiceAgent.best recommends evaluating migration options rather than starting a new long-term TTS or EVI API deployment. This is our editorial judgment; replacement compatibility has not been established.

$3/month Starter; included EVI minutes and overage depend on plan · V3.3 evidence review · Starter subscription reference; EVI 40 minutes; external LLM/telephony extra

Excluded / confirm: Complete cost cannot be established from this reference. Selected external LLM, carrier, token/character consumption and overages prevent a complete cost ceiling from monthly minutes alone. · Hume-managed external LLM usage extra; BYO key/custom model paid outside Hume; Twilio separate

monthly-bundleVerified Yes · 2026-09-28

Subscription includes TTS/EVI/Voice allowances; overage and managed external LLM usage add cost.

Read the complete profile →

The evidence overlap.

Both records have documented values for Product type, Technical setup, Pricing model, OpenAI models, Anthropic models, Google models, Bring your model, Interruption controls, Silence handling, Transcripts, Official product documentation, Checked within 30 days and additional fields shown in Compare. 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.

Review Hume API sunset & migration guidance →

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