S2.1 Pro Free
by Fish AudioSpeech synthesis
S2.1 Pro Free is the no-cost variant of Fish Audio S2.1 Pro, intended for testing, prototyping, and low-volume applications. It provides the same synthesis capabilities without production latency or availability...
- 00
- Released
- 2026-07-29
- Weights
- unknown
fish-audio/s2-1-pro-free · also seen as fish-audio/s2.1-pro-free:free
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-07-29
- Weights
- unknown
- Input
- Text
- Output
- speech
- Context window
- max across endpoints
- Max output
- Providers
- 0 + 1 gateway, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- no comparable direct price
More details
- Last updated
- —
- Knowledge cutoff
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool callingunknown
- Parallel toolsunknown
- Structured outputunknown
- Reasoningunknown
- Image inputunknown
- PDF inputunknown
- Audio inputunknown
- Audio outputunknown
- Video inputunknown
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperatureunknown
- Streamingunknown
- Attachmentsunknown
Endpoints
One row per provider and variant; gateways are listed separately.
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Cost calculator
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More from Fish Audio
Newest Fish Audio models in the catalogue. All Fish Audio models
| Model | Released | Context | Listed price |
|---|---|---|---|
| Drama 3 | 2026-10-13 | — | unpriced |
| Transcribe 1 Pro | 2026-09-24 | — | unpriced |
| S2.1 Pro | 2026-07-28 | — | unpriced |
| S2 Pro | 2026-03-09 | — | unpriced |
| Transcribe-1 | 2026-03-01 | — | unpriced |
| S1 | 2025-10-20 | — | unpriced |
Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model