Fish Audio (fish.audio) is a voice AI platform offering text-to-speech, speech-to-text, voice cloning and real-time streaming through a web app, REST API and SDKs, billed per million UTF-8 bytes rather than per character. Its developer pricing page lists s2.1-pro, s2-pro and s1 at $15.00 per million UTF-8 bytes (about 180,000 English words or 12 hours of speech), ASR transcribe-1 at $0.36 per audio hour and voice-design-1 at $0.01 per successful request, and states there are no subscription fees or monthly minimums for API access. A free counterpart model, s2.1-pro-free, is priced at $0.00 per million UTF-8 bytes with the same quality and 83-language coverage as the paid model but without time-to-first-audio or deployment-slot guarantees.
// pros
- The free API model is officially priced at $0.00 per million UTF-8 bytes (s2.1-pro-free), with the same model quality and language coverage as paid s2.1-pro.
- API pricing is pay-as-you-go with no subscription fee and no monthly minimum, stated on the developer pricing page.
- Rate-limit tiers are published against prepaid spend: under $100 gives 5 concurrent requests, $100 or more gives 15, and $1,000 or more gives 50, unlocked on cumulative prepaid amount rather than spend.
- Language and control surface are documented: s2.1-pro covers 83 languages with natural-language bracket tags, s2-pro covers 80+ languages, and s1 supports 64+ bracketed emotion expressions with published WER 0.008 and CER 0.004.
- Non-TTS endpoints are priced per unit rather than by duration — transcribe-1 at $0.36 per audio hour and voice-design-1 at $0.01 per successful request.
// cons
- The free model is explicitly subject to fair-use limits and provides no time-to-first-audio or DPA guarantees.
- Two official pages disagree on API access terms: the developer pricing page says there are no subscription fees for API access, while the plan FAQ says Premium subscribers get access to the pay-as-you-go API.
- On the consumer side, free-plan output is limited to personal, non-commercial use, monthly minutes do not roll over, and each generated minute costs roughly 600–625 credits.
- Paid TTS is priced per million UTF-8 bytes ($15.00), a coarse unit for short interactive requests where per-character billing would be easier to model.
Build against s2.1-pro-free to measure latency and quality, then switch the model string to s2.1-pro only when you need TTFA guarantees or commercial terms, since the API shape is identical. If you expect more than five simultaneous requests, top up to $100 in advance to unlock the Elevated concurrency tier, and confirm which plan actually grants API access before budgeting.
imported analysis — independent third party, not Uprouter editorial · verify before relying on it
How we estimated this: the free allowance is converted to a dollar value using the provider’s own pay-as-you-go rates for the models a typical developer would reach for. When the allowance is metered in requests, tokens or minutes rather than dollars, we assume median usage of the cheapest capable model. Because assumptions are involved, the figure carries the est. flag — treat it as an order of magnitude, not a quote.
note: s2.1-pro-free is priced at $0.00 per 1M UTF-8 bytes in the official pricing table on docs.fish.audio — a free model rather than a cash credit, subject to fair-use limits and without TTFA or DPA guarantees (checked 2026-09-16).
| Plan | Type | Monthly | Input /1M | Output /1M | Note |
|---|---|---|---|---|---|
| Free | free | — | — | — | Free generations each month; personal, non-commercial use only |
| Premium (credit-based, up to 200 min S1) | subscription | — | — | — | Credits for up to 200 minutes of highest-quality S1 generations; unlocks pay-as-you-go API and commercial rights; exact monthly price not captured (JS-rendered); yearly billing saves 33% |
| Pay-as-you-go API (Premium) | payg | — | — | — | Available to Premium subscribers; ~600-625 credits per minute of generated audio; exact USD rates in developer docs (page failed to load) |
| Pay-as-you-go | payg | — | $15.00 | $15.00 | Pricing is $15.00 per Million UTF-8 bytes (~12 hours of speech) for S2.1-Pro and S2-Pro models. |
Pricing normalized from public sources — always verify with the provider.
// model prices
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| Fish Audio S2.1 Pro | — | — | — |
| Fish Audio S2 | — | — | — |
| Fish Audio S1 | — | — | — |
| Fish Speech 1.4 | — | — | — |
$ Does Fish Audio have a free tier? #
Yes — Fish Audio offers a free tier that we value at roughly $0 in free credits (estimate — derived from rate-limited usage at pay-as-you-go prices). Always confirm current limits on Fish Audio's official pricing page — free tiers change without notice.
$ How much does Fish Audio cost per 1M tokens? #
Fish Audio does not publish simple per-1M-token pricing (it may bill per request, per output, or via a subscription plan). Check their official pricing page for exact figures.
$ Is Fish Audio safe to use? #
Uprouter rates Fish Audio as low risk. Low monetary risk: the API entry point is $0 with an identical paid model at $15.00 per million UTF-8 bytes, and concurrency tiers are published against prepaid thresholds. The material caveats are the free model's lack of latency or availability guarantees and its unpublished fair-use ceiling, which make it suitable for prototyping rather than production commitments. Commercial rights also differ by plan — free-plan content is personal/non-commercial while Premium subscribers may use verified owned voices commercially — and API access requirements are described inconsistently across two official pages, so verify before you ship. Risk ratings are editorial, evidence-based, and never influenced by affiliate relationships.
$ Can I use Fish Audio through Uprouter Connect? #
Fish Audio is not marked Connect-compatible in our catalog yet. You can still use their API directly, or request compatibility via /submit.
Raw community sentiment, shown unblended. Votes never feed into objective data fields like price, risk, or status — and never into sort order.
No published reviews yet — be the first.
// more_informationprice history · live status · risk & confidence · code snippets #
price_history
No recorded changes yet.
live_status
current: unknown No probes recorded yet.
Uprouter runs its own probes; best-effort, not a guarantee. Probe results depend on our network location and cadence — for production, always use the provider’s own status page.
risk_&_confidence
Low monetary risk: the API entry point is $0 with an identical paid model at $15.00 per million UTF-8 bytes, and concurrency tiers are published against prepaid thresholds. The material caveats are the free model's lack of latency or availability guarantees and its unpublished fair-use ceiling, which make it suitable for prototyping rather than production commitments. Commercial rights also differ by plan — free-plan content is personal/non-commercial while Premium subscribers may use verified owned voices commercially — and API access requirements are described inconsistently across two official pages, so verify before you ship.
Confidence reflects how much verifiable evidence (official docs, probe history, community reports) backs this entry. Risk is our editorial assessment of operator reliability and terms — not financial advice.
code_snippets
curl https://fish.audio/chat/completions \
-H "Authorization: Bearer THEIR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "fishaudio/s2-1-pro",
"messages": [{ "role": "user", "content": "Hello" }]
}'
Direct to the provider — Uprouter receives nothing; verify their current pricing before purchasing.
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Ranked by neutral similarity signals only — live status, Connect compatibility, free-tier shape and free-credit proximity. Commercial relationships never influence this list.