260 ms time to first audio on Speko's board (read October 22, 2026); not measured by Coval, so no speed tier.
Benchmark summary: No speed tier: Coval, the source of the tiers, does not measure this model.
Rime arcanav3 is a text-to-speech (TTS) API from Rime, measured by one independent benchmark, Speko.
Speed tier
Not measured by Coval
No speed tier: Coval, the source of the tiers, does not measure this model.
Data read October 22, 2026. No combined score: methodology
Gradium TTS vs Rime arcanav3 Fastest TTS APIs, by speed tierSpeko's board plots it at 260 ms time to first audio from US East; its model page reports a 238 ms sweep.
Speko rates its naturalness at 1,429 Elo from blind A/B votes on phone-agent lines (34th highest of the 43 models Speko rates).
Speko's pronunciation test on numbers, dates and currency scores it 0.35 on a 0-to-1 scale (12th highest of the 30 models Speko scores). This is the accuracy measure used here; Coval's word error rate separates models too little to compare them.
Speko lists about $40. List prices, as each source prints them.
Tested in Spanish, German and French by Artificial Analysis or Speko. A language missing here was not tested, which does not mean it is unsupported.
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