MiniMax
speech-2.8-hd
Measured 2026-07-03
Run speech-2.8-hd on Speko →One API, every model on this board.
Naturalness
1431
Win % · 95% CI
36%
30–43%
Drift
12
Synth p50
294ms
294–354 p50–p90
Robustness
0.15
Fined:
• fatal · currency — dropped the minus sign (49 of 49 transcripts)
→ we sent “Your account shows −$85.40 after the refund.”
→ it said “Your account shows $85.40 after the refund.”
• fatal · decimals — never said “point seven five” (49 of 49 transcripts)
→ we sent “Give .75 of the usual dose.”
→ it said “Give seventy-five of the usual dose.”
• fatal · formatting — never said “pick either option” (49 of 49 transcripts)
→ we sent “You can pick *either* option today.”
→ it said “You can pick times either times option today.”
+ 11 more fined
Cost / 1M chars
$100.0
HD tier; speech-2.8-turbo ≈ $60/1M.
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