SpeechifyAI Simba 3.0 Speechify · text-to-speech (TTS) API

Speed

On Coval's 30-day window ending October 22, 2026 (3,371 runs from US East), SpeechifyAI Simba 3.0 starts speaking after 101.4 ms on a typical turn (median) and 148.1 ms on a slow turn (P95, the slowest one in twenty). That P95 is 6th lowest of the 32 models Coval measures, which puts it in the Fast enough tier: fast enough for most agents. On the median it is a tie (gap under 10 ms) with Alibaba Qwen3 TTS 1.7b, Palabra TTS v1 and SpeechifyAI Simba 3.2.

Voice quality

In the Artificial Analysis Speech Arena it holds 1,121 ±11 Elo (95% interval), 35th highest of the 98 models Artificial Analysis rates; scores whose intervals overlap are a tie. In its Customer Service category, Artificial Analysis places it 43rd, at 1,132 Elo.

Numbers and dates

Speko has not scored its pronunciation of numbers and dates.

Price

Coval lists $10 per 1M characters (since Sep 22, 2026). Artificial Analysis lists $6.6. List prices, as each source prints them: a range of $6.6 to $10.

Languages tested

Tested in Spanish, German, French and Portuguese by Artificial Analysis or Speko. A language missing here was not tested, which does not mean it is unsupported.