StepFun model product
Step TTS 2 (Mar 2026)
Step TTS 2 (Mar 2026) is a text-to-speech model from StepFun.
Updated Sep 8, 2026. Default version: Step TTS 2 (Mar 2026)
LLMBoard Text-to-Speech Score59.6Step TTS 2 (Mar 2026)
Coverage35%1 benchmark families
Context windowN/ATokens
Native catalog priceN/APrice unavailable
Step TTS 2 (Mar 2026) Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Step TTS 2 (Mar 2026) Benchmark Results
Benchmark scores for Step TTS 2 (Mar 2026).
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkArtificial Analysis Text To Speech | Score1,138.00 elo | Rank21 | Participants96 | Percentile78.95% | EvidenceB | EvaluatedN/A |
Step TTS 2 (Mar 2026) Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
Step TTS 2 (Mar 2026) Pricing
Prices are shown in the model's native media unit and resolution tier.
- Native price
- N/A
- Price unit
- N/A
- Tier
- Standard
- Tracked offerings
- 0
No price available
This model does not have a current media price.
Media catalog prices are not converted into token input or output prices.
Step TTS 2 (Mar 2026) Runtime Performance
Provider-specific output speed and catalog latency for Step TTS 2 (Mar 2026). Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Step TTS 2 (Mar 2026) Specifications
Technical details for the model's default version.
- Version
- Step TTS 2 (Mar 2026)
- Released
- Unknown
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- N/A
- Max output
- N/A
- Inputs
- text
- Outputs
- audio
- Open weights
- No
- License
- Unspecified
Step TTS 2 (Mar 2026) Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionStep TTS 2 (Mar 2026) | ReleasedN/A | LLMBoard59.63 | ParametersN/A | ContextN/A | Max outputN/A | Open weightsNo | LicenseUnspecified |
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What is Step TTS 2 (Mar 2026)?
Key information about Step TTS 2 (Mar 2026) and its available data.
Step TTS 2 (Mar 2026) is a text-to-speech model from StepFun. It is ranked by Artificial Analysis.
Data as of 2026-09-08.
FAQ
Common questions about Step TTS 2 (Mar 2026).
When was Step TTS 2 (Mar 2026) released?
A release date is not available for the default version.
How much does Step TTS 2 (Mar 2026) cost?
No native catalog price is currently available for Step TTS 2 (Mar 2026).
Who created Step TTS 2 (Mar 2026)?
Step TTS 2 (Mar 2026) was created by StepFun.
What is the context window for Step TTS 2 (Mar 2026)?
A context window is not available for the default version.
Is Step TTS 2 (Mar 2026) open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Step TTS 2 (Mar 2026)?
No provider offering is currently linked to the default version.