Compare Lab
Deepgram vs Synthflow
Deepgram is positioned as speech recognition models with separate speech generation and managed voice-agent APIs. Synthflow is positioned as a visual voice-agent workflow platform sold through scoped deployments and partner delive
Deepgram is positioned as speech recognition models with separate speech generation and managed voice-agent APIs. 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.
STT and Full Platforms are different product categories. An underlying engine or framework is not a complete substitute for a deployed agent workflow.
14 jointly documented catalog fields. This measures evidence coverage, not equivalent quality or an overall winner.
Test opening hours, booking conflicts and an unanswered transfer.
Start where the records differ.
Values and evidence states are compared together. Shared facts follow the differences; Unknown never means No.
| Decision point | Deepgram | Synthflow |
|---|---|---|
| Billing modelDifferent records | component-stack | custom-sales-led |
| Billing unitDifferent records | STT audio minute; TTS thousand characters; agent WebSocket connection minute | Contract minimum per year; call seconds aggregate to minutes; five AI chat messages count as one usage minute |
| Bring your modelDifferent records | Yes | Yes |
| Warm transferDifferent records | Unknown | Yes |
| WebhooksDifferent records | YesUnknown | YesAPI / webhook |
| Bring your telephonyShared state | Yes | Yes |
Your requirements & next steps
Your requirements
Ready-made / AI receptionist · Strict evidence mode
No personal requirements yet. Add criteria in Advanced Filter to prioritize this comparison.
STT audio minutes, TTS characters and Voice Agent connection minutes are distinct.
Sales-ledcontract;call usage metered but exact unitrates and allowances negotiated.
External provider and telephony bills excluded where applicable. Do not infer a complete monthly ceiling.
Starting commitment; complete contract cost remains unknown.
Billable open connection time is not just spoken audio.
Rates,allowances andsimulationbilling come fromaccountagreement.
Growth is annual prepaid commitment, not invented monthly subscription.
No complete current public contract rate and allowance schedule was established.
No fixed included agent minutes inferred from credit dollars.
No complete current public contract rate and allowance schedule was established.
Initial credits, Growth commitments and tier rates are documented; no recurring free plan or universal rounding/contract terms inferred.
No complete current public contract rate and allowance schedule was established.
Agent pricing covers selected tier and components; full workload determines bill.
Reviewed current public offer; retain original billing scope and units.
Not yet researched against this buyer-critical field standard.
No complete current public contract rate and allowance schedule was established.
Carrier, hosting, model tier and BYO usage prevent a universal full monthly or per-minute ceiling.
No complete current public contract rate and allowance schedule was established.
Carrier, hosting, model tier and BYO usage prevent a universal full monthly or per-minute ceiling.
Research conclusion about cost completeness, not a vendor capability.
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.
Deepgram
The current Nova-3 streaming rate is promotional.
Voice Agent Standard $0.075/min; BYO TTS $0.065/min; BYO LLM + TTS $0.050/min; Advanced $0.163/min (PAYG) · V3.3 evidence review · Voice Agent Standard PAYG WebSocket connection minutes; other tiers/BYO variants differ
Excluded / confirm: Complete cost cannot be established from this reference. Carrier, hosting, model tier and BYO usage prevent a universal full monthly or per-minute ceiling. · BYO model/TTS charges, carrier and customer transport hosting
STT audio minutes, TTS characters and Voice Agent connection minutes are distinct.
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
Sales-ledcontract;call usage metered but exact unitrates and allowances negotiated.
The evidence overlap.
Both records have documented values for Product type, Technical setup, Pricing model, Twilio, Deepgram STT, OpenAI models, Function / tool calling, Interruption controls, Transcripts, Zapier, Make, Official product documentation 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.
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