StepFunReleased Feb 12, 2026

Step TTS 2 (Mar 2026)

Provider endpoints0

Benchmark results1

Measured performance

Benchmark results

All leaderboards ↗

AA Provider Voice TTS Arena ↗Unversioned · provider native voices

1,136.82

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

95% CI 1,124.82–1,148.82 · n=2,620

Independent resultChecked Oct 17, 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: Closed weights
Released: Feb 12, 2026
First discovered: Oct 16, 2026

Exact identities

aa-tts7b1ca2ff-3ba6-4071-b78f-925c913725b4

Sources

Artificial Analysis Provider Voice Arena ↗

Updated Oct 17, 2026

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