Price Index
Follow the price. Keep the context.
Understand the complete voice-agent cost stack: models, voice, transcription, telephony, subscriptions, capacity and add-ons.
Before comparing numbers
First, compare the meter.
11 records
Full Platforms
minute / Custom contract / month / conversation / year
Observed billing units in this category. Matching units alone do not establish comparable scope.7 records
Voice Engines
minute / month / 1m utf8 bytes / 1k characters
Observed billing units in this category. Matching units alone do not establish comparable scope.3 records
STT
minute / hour
Observed billing units in this category. Matching units alone do not establish comparable scope.3 records
Developer Frameworks
month / 1m tokens / minute
Observed billing units in this category. Matching units alone do not establish comparable scope.3 records
Enterprise Platforms
Custom contract / minute
Observed billing units in this category. Matching units alone do not establish comparable scope.A component rate is not the full bill. The table preserves currency, unit, plan, scope and exclusions. Price histories retain Baseline or Not comparable when a numeric trend cannot be established.
Raw units preservedAll-in gaps visibleHistory never overwritten
Platform / categoryHeadline / scopeFree offer / planPrice movementSource
Universal-2 async / Universal-Streaming $0.15/hour; U3.5 Pro async $0.21/hour; U3 realtime $0.45/hour; Voice Agent $0.075/minTracked: $0.075 / minute · V3.3 evidence review · Voice Agent API reference; standalone STT is hourly; transport/add-ons separate
$50 API credits, no credit card requiredVoice Agent API reference; standalone STT is hourly; transport/add-ons separate
Evidence improved
$0.14/min Start; $0.12/min BuildTracked: $0.14 / minute · V3.3 evidence review · Start AI minute; carrier, transfer and plan terms separate; documentation scope conflict retained
2 signup credits plus inbound number ($15/month stated value)Start AI minute; carrier, transfer and plan terms separate; documentation scope conflict retained
Evidence improved
Managed Agents $0.06/min; Cartesia-provided-number telephony $0.014/minTracked: $0.06 / minute · V3.3 evidence review · Managed Agents base rate; carrier/model charges and prepaid plan balances separate
Free plan: 20K speech credits and $1 agent prepaymentManaged Agents base rate; carrier/model charges and prepaid plan balances separate
Evidence improved
Page header/FAQ says $99/mo; visible EUR table says €0/mo; Specialist €349/moTracked: Numeric rate undisclosed · V3.3 evidence review · Localized Receptionist/Specialist offer conflict; request a currency-specific quote
50 AI minutes / 14-day trialLocalized Receptionist/Specialist offer conflict; request a currency-specific quote
Evidence improved
Custom quote / current rate unresolvedTracked: Numeric rate undisclosed · V3.3 evidence review · Enterprise contract; complete public numeric schedule unavailable
Unknown after researchEnterprise contract; complete public numeric schedule unavailable
Evidence improved
Voice Agent Standard $0.075/min; BYO TTS $0.065/min; BYO LLM + TTS $0.050/min; Advanced $0.163/min (PAYG)Tracked: $0.075 / minute · V3.3 evidence review · Voice Agent Standard PAYG WebSocket connection minutes; other tiers/BYO variants differ
$200 new-account creditsVoice Agent Standard PAYG WebSocket connection minutes; other tiers/BYO variants differ
Evidence improved
Free $0; Starter $6/monthTracked: $6 / month · V3.3 evidence review · Starter Agents subscription reference; model/carrier costs extra
Free Agents plan: 15 call minutes and 4 concurrent calls; LLM/carrier charges and usage terms remain separate.Starter Agents subscription reference; model/carrier costs extra
Evidence improved
TTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surchargesTracked: $15 / 1m-utf8-bytes · V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing
$5 one-time Agents trial; free preview callsTTS API reference; Voice Agents beta has separate minute-based billing
Evidence improved
$99 monthly or $79/month billed annuallyTracked: $99 / month · V3.3 evidence review · Business monthly subscription; shared voice/SMS/chat credits and top-ups separate
1000monthly overage credits in paid Business; no separate free-credit grant verifiedBusiness monthly subscription; shared voice/SMS/chat credits and top-ups separate
Evidence improved
Starter $149/monthTracked: $149 / month · V3.3 evidence review · Starter private beta subscription; unresolved overage scope
Founders Beta offer says 60 days free for a limited cohort. Not general public free-plan eligibility.Starter private beta subscription; unresolved overage scope
Evidence improved
$3/month Starter; included EVI minutes and overage depend on planTracked: $3 / month · V3.3 evidence review · Starter subscription reference; EVI 40 minutes; external LLM/telephony extra
$20 new-account credits per billing docsStarter subscription reference; EVI 40 minutes; external LLM/telephony extra
Evidence improved
Paid Cloud agent sessions $0.01/min beyond allowanceTracked: $50 / month · V3.3 evidence review · Cloud Ship starting subscription; session overage, inference, transport and artifacts extra
$2.50 inference credits on Build; 1,000 agent minutes and 50 US local inbound minutes are separate allowancesCloud Ship starting subscription; session overage, inference, transport and artifacts extra
Evidence improved
Gen2 $0.03 / 1,000 characters; Falcon $0.01 / 1,000 charactersTracked: $0.03 / 1k-characters · V3.3 evidence review · Murf Gen2 PAYG TTS; Falcon family separately priced
100,000 characters, no time limit; one free allowanceMurf Gen2 PAYG TTS; Falcon family separately priced
Evidence improved
GPT-Realtime-2 audio input $32/M, audio output $64/M; text input $4/M, output $24/MTracked: $32 / 1m-tokens · V3.3 evidence review · GPT-Realtime-2 input audio tokens only; output/audio/text/cache have different rates; not 2.1 rate evidence
Unknown after researchGPT-Realtime-2 input audio tokens only; output/audio/text/cache have different rates; not 2.1 rate evidence
Evidence improved
agent-1x active $0.01/min, reserved $0.0005/min; agent-2x $0.02/$0.001; agent-3x $0.03/$0.0015Tracked: $0.01 / minute · V3.3 evidence review · Pipecat Cloud agent-1x active compute only; reserved runtime/provider/carrier bills extra
Open-source framework may be used without a software subscription; hosting, inference and transport costs remain.Pipecat Cloud agent-1x active compute only; reserved runtime/provider/carrier bills extra
Evidence improved
Custom quote / current rate unresolvedTracked: Numeric rate undisclosed · V3.3 evidence review · Contract-defined minute billing; no public numeric quote
Unknown after researchContract-defined minute billing; no public numeric quote
Evidence improved
Voice-agent configuration range $0.07–$0.31/minTracked: $0.07 / minute · V3.3 evidence review · Published configured-agent range lower reference; not a guaranteed all-in floor or ceiling
$10 signup creditsPublished configured-agent range lower reference; not a guaranteed all-in floor or ceiling
Evidence improved
Mist $0.03 / 1,000 characters; Coda $0.05 / 1,000 charactersTracked: $0.03 / 1k-characters · V3.3 evidence review · Mist TTS; Coda separately priced; catalog and free-credit conflicts remain
Public free usage offer exists; exact amount remains conflicting.Mist TTS; Coda separately priced; catalog and free-credit conflicts remain
Evidence improved
$99/month plus $1.99 per additional conversationTracked: $1.99 / conversation · V3.3 evidence review · Additional eligible conversation after the $99/month plan allowance; legacy accounts differ
Unknown after researchAdditional eligible conversation after the $99/month plan allowance; legacy accounts differ
Evidence improved
Launch $0; paid Core $49/month or $39/month billed yearlyTracked: $49 / month · V3.3 evidence review · Core monthly subscription and action-credit allowance; current waitlist, not general availability
No monthly credits on Launch; paid plans include purchased allowancesCore monthly subscription and action-credit allowance; current waitlist, not general availability
Evidence improved
Custom quote / current rate unresolvedTracked: Numeric rate undisclosed · V3.3 evidence review · Contract-defined successful outcome; no public numeric quote or uniform per-minute rate
Unknown after researchContract-defined successful outcome; no public numeric quote or uniform per-minute rate
Evidence improved
Free $0; Starter $10; Pro $99; Scale $499 per monthTracked: $10 / month · V3.3 evidence review · Starter TTS API plan; credit/character schedule unresolved; Enterprise Agents separate quote
Free $0 then Starter/Pro/Scale for TTS.Starter TTS API plan; credit/character schedule unresolved; Enterprise Agents separate quote
Evidence improved
Pro self-serve PAYG; Enterprise contract billingTracked: Numeric rate undisclosed · V3.3 evidence review · STT exact-second metering billed in audio hours; no verified current complete rate schedule
$100 new-account credit; older pre-August 1, 2026 accounts $25 transition creditSTT exact-second metering billed in audio hours; no verified current complete rate schedule
Evidence improved
Enterprise contracts from $30,000 annuallyTracked: $30,000 / year · V3.3 evidence review · Enterprise contract starting annual commitment; scoped quote required
Unknown after researchEnterprise contract starting annual commitment; scoped quote required
Evidence improved
$0.05/min Voice AI engineTracked: $0.05 / minute · V3.3 evidence review · Voice AI engine component; token, carrier, recording and number costs separate
Unknown after researchVoice AI engine component; token, carrier, recording and number costs separate
Evidence improved
Studio $99; Agency $299 per month; business receptionist is a separate offeringTracked: $99 / month · V3.3 evidence review · White-label Studio monthly subscription; Business Receptionist is a separate product
Studio trial $12; Agency trial $24; no monthly included minutes during trialWhite-label Studio monthly subscription; Business Receptionist is a separate product
Evidence improved
$0.05/min Vapi hostingTracked: $0.05 / minute · V3.3 evidence review · Hosting only; model, speech, carrier and compliance/support add-ons extra
$5 new-account creditHosting only; model, speech, carrier and compliance/support add-ons extra
Evidence improved
Read the price in context.
Headline pricing may cover one model, a volume tier or a temporary offer. All-in calling costs also depend on voice, transcription, model, carrier, subscription and support. Unknown totals are left Unknown.
Price movement requires two comparable captures. First capture means a baseline; Not comparable means the scope, unit or evidence does not support a defensible numeric delta.
Build your own cost stack