Compare Lab
Hume AI vs Pipecat
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. Pipecat is positioned as open-source Python orchestration for a
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. Pipecat is positioned as open-source Python orchestration for a voice stack assembled by developers. Start by deciding who owns the missing layers, then inspect the documented differences below.
Voice Engines and Developer Frameworks 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.
TTS + EVI API sunset · Announced end: 13 Nov 2026, 05:01 UTC. Read notice & sources →
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 | Hume AI | Pipecat |
|---|---|---|
| Billing modelDifferent records | monthly-bundle | component-stack |
| Billing unitDifferent records | Monthly subscription + EVI minutes / TTS characters / supplemental LLM usage | Active/reserved agent minute; participant minute; telephony minute; SIP REFER event |
| Bring your telephonyDifferent records | Yes | Yes |
| Warm transferDifferent records | Unknown | Yes |
| WebhooksDifferent records | YesAPI / webhook | YesUnknown |
| Bring your modelShared state | Yes | Yes |
Your requirements & next steps
Your requirements
Ready-made / AI receptionist · Strict evidence mode
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Subscription includes TTS/EVI/Voice allowances; overage and managed external LLM usage add cost.
Framework open source; Cloud compute, reservation, transport, recording and providers separately priced.
Free plan exists; paid entry is not a complete phone-call bill.
Compute only. Transport/models/recording and reserved idle time excluded.
Incompatible product allowances are not collapsed into one all-in minute price.
Different units cannot be normalized without usage and provider assumptions.
First-month Creator promotion is separate from regular price; Enterprise custom.
Public component table and Enterprise sales path were reviewed; an exact platform subscription floor, contractual minimum and billing-rounding policy were not established. Per-minute display alone does not prove per-second metering.
Plan-scoped EVI allowance; does not include every third-party carrier/model charge.
Does not make hosting or model inference free.
TTS characters, EVI minutes and supplemental model usage remain separate.
This is the audio-filter allowance overage, not an all-in call rate.
Enterprise integrated inference billing by agreement.
Not yet researched against this buyer-critical field standard.
Not yet researched against this buyer-critical field standard.
No all-in ceiling from minutes alone: reservation, transport, providers, recording and carrier legs vary.
No all-in ceiling from minutes alone: reservation, transport, providers, recording and carrier legs vary.
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.
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
Subscription includes TTS/EVI/Voice allowances; overage and managed external LLM usage add cost.
Pipecat
Free framework licensing does not cover inference, hosting or carriers.
agent-1x active $0.01/min, reserved $0.0005/min; agent-2x $0.02/$0.001; agent-3x $0.03/$0.0015 · V3.3 evidence review · Pipecat Cloud agent-1x active compute only; reserved runtime/provider/carrier bills extra
Excluded / confirm: Complete cost cannot be established from this reference. No all-in ceiling from minutes alone: reservation, transport, providers, recording and carrier legs vary. · LLM/STT/TTS provider invoices, transport, telephony, reserved runtime, recording and storage
Framework open source; Cloud compute, reservation, transport, recording and providers separately priced.
The evidence overlap.
Both records have documented values for Product type, Technical setup, Pricing model, Published numeric pricing, Twilio, Realtime / streaming audio, OpenAI models, Anthropic models, Google models, Bring your model, Interruption controls, 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.
Review Hume API sunset & migration guidance →