← Text-to-Speech

Deepgram

aura-2

Measured 2026-07-03

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One API, every model on this board.

Naturalness

1584

Win % · 95% CI

65%

58–70%

Drift

9

Synth p50

125ms

125–138 p50–p90

Robustness

0.20

Fined:

• fatal · currency — dropped the minus sign (35 of 35 transcripts)

→ we sent “Your account shows −$85.40 after the refund.”

→ it said “Your account shows 85.4 after the refund.”

• fatal · dates — never said “friday” or “sunday” (21 of 35 transcripts)

→ we sent “The fair runs Fri–Sun, Oct 9–11.”

→ it said “The fair runs Fri Sun, October ninth eleven.”

• fatal · large numbers — never said “zero zero” (5 of 5 transcripts)

→ we sent “Only 007 seats remain.”

→ it said “Only seven seats remain.”

+ 22 more fined

Cost / 1M chars

$30.0

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