StepFunReleased Feb 12, 2026

Step Audio EditX (Mar 2026)

Provider endpoints0

Benchmark results1

Measured performance

Benchmark results

All leaderboards ↗

AA Provider Voice TTS Arena ↗Unversioned · provider native voices

1,098.96

Provider native voices · all categories · US + UK accents · (Mar 2026) · 2 listed voices

95% CI 1,086.96–1,110.96 · n=2,304

Independent resultChecked Oct 21, 2026

Access & cost

Prices across providers

0 quotes

No listed provider price

Artificial Analysis Provider Voice Arena ↗

Model specifications

Developer: StepFun
Modality: Audio
Context: Not reported
Maximum output: Not reported
Weights: Open weights
Released: Feb 12, 2026
First discovered: Oct 16, 2026

Exact identities

aa-tts0af2723d-0560-45b0-8cdb-81f19bcdceba

Sources

Artificial Analysis Provider Voice Arena ↗

Updated Oct 21, 2026

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