Compare Lab
Fish Audio vs Hume AI
Fish Audio is positioned as a developer speech API and creative voice workspace; paid TTS usage is metered in UTF-8 bytes. Hume AI is positioned as hume TTS and EVI API sunset: announced access end November 13, 2026 at 05:01 UTC.
Fish Audio is positioned as a developer speech API and creative voice workspace; paid TTS usage is metered in UTF-8 bytes. 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.
17 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 | Fish Audio | Hume AI |
|---|---|---|
| Billing modelDifferent records | component-stack | monthly-bundle |
| Billing unitDifferent records | TTS: million UTF-8 bytes; ASR: audio hours; Agents: conversation minutes | Monthly subscription + EVI minutes / TTS characters / supplemental LLM usage |
| Warm transferDifferent records | Yes | Unknown |
| HIPAA pathDifferent records | Unknown | Yes |
| Bring your telephonyShared state | Yes | Yes |
| Bring your modelShared state | Yes | Yes |
Your requirements & next steps
Your requirements
Ready-made / AI receptionist · Strict evidence mode
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TTS uses UTF-8 bytes, ASR audio hours, Agents minutes plus carrier/model/add-ons. Multiple products must not share a fabricated normalized unit.
Subscription includes TTS/EVI/Voice allowances; overage and managed external LLM usage add cost.
Free TTS model and Agents promotional basic LLM scope are separate.
Free plan exists; paid entry is not a complete phone-call bill.
Each product keeps its own billing unit.
Incompatible product allowances are not collapsed into one all-in minute price.
API access; managed numbers have separate rental and enterprise agreement may differ.
First-month Creator promotion is separate from regular price; Enterprise custom.
Real sessions consume balance including relevant carrier/model charges; no monthly included minutes.
Plan-scoped EVI allowance; does not include every third-party carrier/model charge.
Destination, transfer and selected model affect cost; no complete ceiling.
TTS characters, EVI minutes and supplemental model usage remain separate.
Rates have explicit event/destination scope, not a single maximum.
Not yet researched against this buyer-critical field standard.
Not yet researched against this buyer-critical field standard.
Call mix, destination, transfer time, selected model/token usage and separate speech products prevent a universal complete monthly/minute ceiling.
Call mix, destination, transfer time, selected model/token usage and separate speech products prevent a universal complete monthly/minute ceiling.
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.
Fish Audio
UTF-8 bytes and characters are not interchangeable for multilingual scripts.
TTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surcharges · V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing
Excluded / confirm: Complete cost cannot be established from this reference. Call mix, destination, transfer time, selected model/token usage and separate speech products prevent a universal complete monthly/minute ceiling. · Phone destination surcharge, $1.20/month managed number, cold $0.015/min or warm $0.025/min post-transfer, non-basic LLM tokens; BYO carrier separate
TTS uses UTF-8 bytes, ASR audio hours, Agents minutes plus carrier/model/add-ons. Multiple products must not share a fabricated normalized unit.
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.
The evidence overlap.
Both records have documented values for Product type, Call direction, Technical setup, Pricing model, Published numeric pricing, Free tier, Bring your telephony, Twilio, Voice cloning, Realtime / streaming audio, Bring your model, Interruption controls 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 →