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| 2 models | fish-audioFish Audio: S2.1 Pro Free (free)Remove × | abr-aiabr-ai/niagara-84m-batch.enRemove × |
|---|---|---|
| What’s different | 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… | 0.084B parameters · 1 language · Encoder: State-space model · Decoder: CTC |
| Date | Jul 29, 2026Listed | Oct 17, 2026Discovered |
API prices USD · provider configuration shown below | ||
| Listed rate | See provider quotes | See provider quotes |
| Provider endpoints | 0 endpoints → | 0 endpoints → |
Benchmarks Each result retains its evaluation configuration | ||
| AMI-Cleaned WER ↗English short-form; normalization unversioned | Not reported | 12.01% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| Earnings22-Cleaned-AA-chunked WER ↗English short-form; normalization unversioned | Not reported | 10.83% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| Gigaspeech-Cleaned WER ↗English short-form; normalization unversioned | Not reported | 10.41% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| LS Clean WER ↗English short-form; normalization unversioned | Not reported | 3.09% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| LS Other WER ↗English short-form; normalization unversioned | Not reported | 7.6% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| SPGISpeech WER ↗English short-form; normalization unversioned | Not reported | 2.61% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| URGENT2024 WER ↗English short-form; normalization unversioned | Not reported | 20.16% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| Voice Arena Monsoon WER ↗English short-form; normalization unversioned | Not reported | 8.82% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
| Voxpopuli-AA-Cleaned WER ↗English short-form; normalization unversioned | Not reported | 4.33% WER ↗abr-ai/niagara-84m-batch.enLeaderboard entry |
Specifications | ||
| Context window | — | — |
| Max output | — | — |
| Parameters | — | 0.084B |
| Audio input | Not reported | Supported |
| Transcription | Not reported | Supported |