390.6 ms P50 time-to-first-audio on Coval; ranked 30th of 112 in the TTS for Voice Agents 2026 index.
Benchmark summary: 26/100, ranked 30th of 112 in the TTS for Voice Agents 2026 index (Listed). Strongest criterion: price, 2.3 of 5 points.
SpeechifyAI Simba 3.0 is a proprietary text-to-speech (TTS) API from Speechify, measured by two independent benchmarks: Artificial Analysis and Coval.
Overall score
26 /100
Data checked on September 30, 2026
Updated after each benchmark capture
Every point comes from a public benchmark: sources · methodology
SpeechifyAI Simba 3.0 ranks 30th of 112 in the 2026 text-to-speech (TTS) API benchmark, with a score of 26/100.
On Coval's 30-day window ending October 1, 2026 (11,842 runs), SpeechifyAI Simba 3.0 has a P50 (median) time-to-first-audio (TTFA) of 390.6 ms, 25th lowest of the 31 models Coval measures. Its P99, the slowest 1% of turns, is 906.3 ms (25th lowest of the 31 models Coval measures). Latency consistency: a standard deviation of 498.6 ms (27th lowest of the 31 models Coval measures). Mean time to first byte (TTFB) is 289.6 ms.
Coval measures an accuracy (word error rate) of 5.2% over 11,833 samples on the same window, 20th lowest of the 31 models Coval measures.
In the Artificial Analysis Speech Arena (capture of October 1, 2026), SpeechifyAI Simba 3.0 has an Elo of 1,123 (±12, 95% confidence) from 2,568 blind comparisons, 28th highest of the 92 models Artificial Analysis rates.
Artificial Analysis lists SpeechifyAI Simba 3.0 at $6.6 per 1M characters (6th lowest of the 78 models Artificial Analysis lists a price for).
Artificial Analysis changed its Speech Arena Elo between the captures of September 30, 2026 and October 1, 2026 without a new measurement date (1,122, then 1,123): the score uses the average, 1,122.5. The value shown is the latest.
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.
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