Fish Audio

Telephony / SIP

Verified Yes

Scope & source

YesVerified Yes · 2026-09-28

Agent tools

Verified Yes

Scope & source

YesVerified Yes · 2026-09-28

Integrations / webhooks

Verified Yes

Scope & source

YesVerified Yes · 2026-09-28API / webhook

Enterprise / HIPAA path

Unknown after research

Scope & source

UnknownUnknown after research · 2026-09-28

pricing and rate limits Pricing - Fish Audio

Voice Engines

A place in your stack.

Best for

Developers prototyping expressive speech
Narration pipelines that can meter input bytes precisely

Watch-outs

UTF-8 bytes and characters are not interchangeable for multilingual scripts.
Free API access is time-bound and has retention, commercial and service-level conditions.

Visit Fish AudioOfficial site · no affiliate tracking

Pricing, with the fine printTTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surcharges

Tracked component / plan: $15 / 1m-utf8-bytes
V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing

All-in call price: Unknown — 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.
Pricing model: component-stack
Cheapest plan: TTS API reference; Voice Agents beta has separate minute-based billing
Free offer: $5 one-time Agents trial; free preview calls
Evidence status: official
Last price check: 2026-09-28
Last product check: 2026-09-27

Product evidence coverage

Documented claims, not tested performance.

10 / 23 fields

Product specification

What the evidence says.

Unknown means we have not established it. It does not mean No. Compliance claims require plan and contract review.

White label

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

Client tenancy

UnknownUnknown after research

Workspace library and session variables do not establish reseller tenant isolation, reusable agent-template product or detailed role permissions.

Source ↗Source ↗2026-09-28

Client billing

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

ISO 27001

Unknown

Not established by the evidence reviewed. This does not mean unsupported.

No verified source

BAA availability

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

SIP

DocumentedVerified Yes

Import carrier-owned numbers through authenticated SIP trunks; carrier still bills PSTN legs.

Source ↗2026-09-28

Warm transfer

DocumentedConditional

Phone-only handoff. Managed Twilio supports transfer; SIP cold requires REFER and warm requires termination. Warm briefing provides context.

Source ↗2026-09-28

Cold transfer

DocumentedConditional

Phone-only handoff. Managed Twilio supports transfer; SIP cold requires REFER and warm requires termination. Warm briefing provides context.

Source ↗2026-09-28

Batch calling

Unknown

Not established by the evidence reviewed. This does not mean unsupported.

No verified source

MCP tools

DocumentedConditional

Agent session tool timeline recognizes MCP-connected server calls; server setup and tools require configuration.

Source ↗2026-09-28

Webhooks

DocumentedVerified Yes

Fish executes an HTTPS request to a customer tool endpoint; CRM/calendar implementations remain customer-owned.

Source ↗2026-09-28

Calendar

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

CRM

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

Bring your carrier

DocumentedVerified Yes

Import carrier-owned numbers through authenticated SIP trunks; carrier still bills PSTN legs.

Source ↗2026-09-28

Bring your model

DocumentedVerified Yes

OpenAI-compatible custom endpoint receives conversation context and tool definitions; Fish handles remaining agent runtime. Not evidence of native support for every upstream provider.

Source ↗2026-09-28

Bring your voice

UnknownUnknown after research

Voice and recognition selections are documented; no external provider credential/endpoint replacement path established for these stages.

Source ↗2026-09-28

HIPAA / BAA

UnknownUnknown after research

Regulated-deployment sales language, payment-card processing and terms permissions do not establish HIPAA/PCI scope or a customer role matrix.

Source ↗Source ↗2026-09-28

SOC 2

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

GDPR

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

Languages

DocumentedVerified Yes

Agents can select a speaking language and use Fish Library or own cloned voice. Not proof of automatic same-session language switching.

Source ↗2026-09-28

Voices

Unknown

Not established by the evidence reviewed. This does not mean unsupported.

No verified source

Realtime audio

Streaming audio API

Source ↗2026-09-27

Voice cloning

Reference and persistent voice cloning

Source ↗2026-09-27

Architecture & connections

Understand the moving parts.

STT

Fish Audio transcribe models

LLM

Runtime provider options not established by current research

TTS

Fish Audio voice library / selected speech model

TELEPHONY

Unknown — provider details not established by reviewed evidence.

Integrations

Unknown — provider details not established by reviewed evidence.

Fish Audio API pricing and limits Fish Audio capabilities Fish Audio S2.1 free API conditions Fish Audio affiliate program

Research outcomes / sources / limitations

Evidence you can inspect.

A documented feature, a supplier claim and an unanswered question are different kinds of evidence.

Buyer-relevant evidence114 / 114 applicable P0 fields researched

61 strong-source resolved · 34 unknown after research

Evidence coverage details

Strong-source resolved: 61
Vendor-claim only: 0
Conditional: 19
Other sourced outcomes: 0
Unknown after research: 34
Conflicting evidence: 0
Not applicable: 0
Not researched: 0

P1: 157 / 157 researched · Relevant P2: 27 / 27 researched.

Checked 2026-09-28. P0 means buyer-critical. Research coverage measures the work completed, not product quality, trust, or a benchmark score. A researched field can still be Unknown.

Inspect detailed evidence, sources and research gaps

September 2026 remains the historical baseline. A new research date does not mean a feature launched that day. Unknown after research and not researched are separate states.

Official documentation establishes what the supplier documents. No paid calls, independent product benchmarks or compliance audits were performed in this research pass. Coverage measures research work, never product quality.

Buyer intelligence / September 2026 baseline

The operating decision.

Price structure

Component stack

V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing

component-stackVerified Yes · 2026-09-28

TTS uses UTF-8 bytes, ASR audio hours, Agents minutes plus carrier/model/add-ons. Multiple products must not share a fabricated normalized unit.

pricing and rate limits ↗Pricing - Fish Audio ↗

Human fallback

Unknown — no established fallback mode

UnknownUnknown after research · 2026-09-28

No individually verified capability establishes this selection. Conditional support and vendor claims do not satisfy Strict Must-have.

Phone transport and carrier-dependent transfer

transfers ↗Pricing & Rate Limits - Fish Audio ↗Overview - Fish Audio ↗

Documented transfer is not a staffed human service. Verify who answers, when they answer and what happens if they do not.

Try it yourself

Unknown — no independently checked public demo entry is attached.

External signals

No dated external signal in this record. Missing evidence is not a negative review.

Underlying model context: the documented stack above does not establish an exact benchmark checkpoint or its deployed settings. Public model results cannot become a Fish Audio score.

Plan a Fish Audio pilot See something outdated? Report a correction.Public model evidence →

Append-only price history

Every capture leaves a trace.

A new check creates a new snapshot. Deltas appear only for the same currency, unit, model and scope.

Checked datePrevious → currentDeltaEvidence

2026-09-27

No earlier capture$15 / 1M UTF-8 bytes

Tracked: $15 / 1m-utf8-bytes · Paid s2.1-pro TTS API

First captureFish Audio API pricing and limits Fish Audio S2.1 free API conditions

2026-09-28

$15 / 1M UTF-8 bytesTTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surcharges

Tracked: $15 / 1m-utf8-bytes · V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing

Evidence improvedpricing and rate limits Pricing - Fish Audio

2026-09-28

TTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surchargesTTS $15/M UTF-8 bytes; ASR $0.36/audio hour; Agents $0.06/min + applicable surcharges

Tracked: $15 / 1m-utf8-bytes · V3.3 evidence review · TTS API reference; Voice Agents beta has separate minute-based billing

Evidence improvedpricing and rate limits Pricing - Fish Audio

New research observations preserve earlier captures. “Evidence improved” records what we learned; it does not claim the market changed on that date. September 2026 is the historical baseline.

Cost estimator

Price the actual workflow.

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

Carry the current source into your estimate, then enter the model, voice, carrier and fixed fees your configuration needs.

Estimate Fish Audio costs

Alternatives by category

Other voice engines to inspect.

Alphabetical alternatives within the same category. An editorial starting point, not a performance ranking.

CartesiaVoice Engines

Developers choosing a streaming TTS layer

ElevenLabsVoice Engines

Teams wanting speech and agent tooling from one vendor

Hume AIVoice EnginesTTS + EVI API sunset · 13 Nov 2026, 05:01 UTC

Historical capability and pricing research

Murf AIVoice Engines

Builders comparing a character-metered speech layer

Evidence archive

Inspect the record.

Fish Audio API pricing and limits2026-09-27reviewed

Paid s2.1-pro TTS is $15 per million UTF-8 bytes, not per million characters. s2.1-pro-free is $0. API billing has no subscription or monthly minimum. ASR is separately $0.36/audio hour. Starter concurrency is 5; higher tiers depend on total prepaid amount.

v2-voice-fish-price · official · Captured 2026-09-27T02:53:32Z

Fish Audio capabilities2026-09-27reviewed

Official documentation covers REST/API and SDK access to TTS, ASR, voice cloning, voice management and real-time audio streaming. The free S2.1 model lacks TTFA and DPA guarantees.

v2-voice-fish-product · official · Captured 2026-09-27T02:53:32Z

Fish Audio S2.1 free API conditions2026-09-27reviewed

The updated free-API article says access currently runs through November 30, 2026 under fair use, without SLA or latency guarantees. Requests may be retained for model improvement. Businesses above $1M ARR should contact Fish before using the free model. The article lists 83 languages for S2.1 Pro.

v2-voice-fish-free · official · Captured 2026-09-27T02:53:32Z

Fish Audio affiliate program2026-09-27reviewed

Fish Audio invites affiliate applications, issues a personal link after approval and lists monthly payouts. The public page does not state an exact commission rate. No approved VoiceAgent.best link is evidenced.

v2-voice-fish-affiliate · official · Captured 2026-09-27T02:53:32Z