Fi
Fish Audio: S2.1 Pro
Free allowance
Up to50requests / day
via OpenRouter · < $10 credits
- 20 requests / minute
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...
- Input
- text
- Output
- speech
Providers
Available through 1 free provider. Use the model ID and API settings below to connect.
* The provider match may differ from this model. Check its docs for details.
Benchmarks
Compare scores and explore results by category.
No benchmark results are available for this model yet.
Frequently asked questions
Free access, setup, and what to expect.
S2.1 Pro is available with up to 50 requests / day free through OpenRouter (< $10 credits). Additional limits apply at the same time: 20 requests / minute. Free allowances can change. Check the S2.1 Pro provider limits before you start.
To use S2.1 Pro, choose one of the listed S2.1 Pro API providers and follow the provider’s account and API-key setup guide. Copy the S2.1 Pro model ID and connection settings for your chosen provider into your app or API client. Model IDs can differ between providers. API requests go directly to the provider; Free Models is a comparison site.
S2.1 Pro accepts text as listed input formats. Listed output formats include speech. Image or audio input support does not imply image or audio generation. Check the chosen provider’s S2.1 Pro documentation for supported file types and request formats.
Neither reasoning nor tool calling support is listed for S2.1 Pro. Reasoning enables additional processing for complex problems. Tool calling allows a model to request functions that your app executes. Check the chosen provider’s documentation for capability availability and setup.
No benchmark results are listed for S2.1 Pro yet. Missing scores don’t establish poor performance. Compare scores within the same benchmark: coding indexes, Elo ratings, and win rates measure different things. The index comparison charts include only scored free models listed on Free Models. Evaluate S2.1 Pro on examples from your own task alongside context size and provider limits.