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

Cognigy vs Synthflow

Cognigy is positioned as enterprise agent workflows and Voice Gateway for existing contact-center environments. Synthflow is positioned as a visual voice-agent workflow platform sold through scoped deployments and partner delivery

The decision in context

Cognigy is positioned as enterprise agent workflows and Voice Gateway for existing contact-center environments. Synthflow is positioned as a visual voice-agent workflow platform sold through scoped deployments and partner delivery. Start by deciding who owns the missing layers, then inspect the documented differences below.

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

16 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
CognigySynthflow
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 pointCognigySynthflow
Billing unitDifferent records
UnknownUnknown after research · 2026-09-28
Contract minimum per year; call seconds aggregate to minutes; five AI chat messages count as one usage minuteVerified Yes · 2026-09-28
Bring your modelDifferent records
YesVerified Yes · 2026-09-28
YesConditional · 2026-09-28Documented product/configuration only; see research notes · BYOK-enabled account
Warm transferDifferent records
UnknownUnknown after research · 2026-09-28
YesVerified Yes · 2026-09-28Documented product/configuration only; see research notes
WebhooksDifferent records
YesConditional · 2026-09-28Unknown
YesVerified Yes · 2026-09-28API / webhookDocumented product/configuration only; see research notes
Billing modelShared state
custom-sales-ledVerified Yes · 2026-09-28
custom-sales-ledVerified Yes · 2026-09-28
Bring your telephonyShared state
YesConditional · 2026-09-28Voice Gateway
YesConditional · 2026-09-28Documented product/configuration only; see research notes · Enterprise/custom telephony agreement
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
CognigyEnterprise Platforms
SynthflowFull Platforms
Pricing model
Cognigy
custom-sales-ledVerified Yes · 2026-09-28

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

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

Sales-ledcontract;call usage metered but exact unitrates and allowances negotiated.

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

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

Synthflow
Enterprise contracts from $30,000 annuallyVerified Yes · 2026-09-28

Starting commitment; complete contract cost remains unknown.

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

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

Synthflow
Contract minimum per year; call seconds aggregate to minutes; five AI chat messages count as one usage minuteVerified Yes · 2026-09-28

Rates,allowances andsimulationbilling come fromaccountagreement.

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

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

Synthflow
UnknownUnknown after research · 2026-09-28

No complete current public contract rate and allowance schedule was established.

Documented product/configuration only; see research notes · Contract-specific
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.

Synthflow
UnknownUnknown after research · 2026-09-28

No complete current public contract rate and allowance schedule was established.

Documented product/configuration only; see research notes · Contract-specific
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.

Synthflow
UnknownUnknown after research · 2026-09-28

No complete current public contract rate and allowance schedule was established.

Documented product/configuration only; see research notes · Contract-specific
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.

Synthflow
Account agreement and carrier/add-on terms require quoteVerified Yes · 2026-09-28

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

Documented product/configuration only; see research notes · Contract-specific
Free offer
Cognigy
UnknownNot researched

Not yet researched against this buyer-critical field standard.

Synthflow
UnknownUnknown after research · 2026-09-28

No complete current public contract rate and allowance schedule was established.

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

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

Synthflow
UnknownUnknown after research · 2026-09-28

No complete current public contract rate and allowance schedule was established.

Documented product/configuration only; see research notes · Contract-specific
What remains unresolved
Cognigy
UnknownUnknown after research · 2026-09-28

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

Synthflow
No complete current public contract rate and allowance schedule was established.Verified Yes · 2026-09-28

Research conclusion about cost completeness, not a vendor capability.

Documented product/configuration only; see research notes · Contract-specific

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 →

Synthflow

Do not apply old self-service rates to a new contract.

Enterprise contracts from $30,000 annually · V3.3 evidence review · Enterprise contract starting annual commitment; scoped quote required

Excluded / confirm: Complete cost cannot be established from this reference. No complete current public contract rate and allowance schedule was established. · Account agreement and carrier/add-on terms require quote

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

Sales-ledcontract;call usage metered but exact unitrates and allowances negotiated.

Read the complete profile →

The evidence overlap.

Both records have documented values for Product type, Technical setup, Pricing model, ElevenLabs TTS, Deepgram STT, OpenAI models, MCP tools, Knowledge base / RAG, Function / tool calling, Interruption controls, Silence handling, Transcripts 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.

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.