Deepgram
aura-2
Measured 2026-07-03
Naturalness
1584
Win % · 95% CI
65%
58–70%
Drift
9
Synth p50
125ms
125–138 p50–p90
Robustness
0.41
Fined:
• minor · currency (international, ×0.4) — kept the value but never said “forty five”; a prompt fixes this (7 of 16 transcripts)
→ we sent “Balance: -€45,90 outstanding.”
→ it said “Negative four thousand five hundred ninety euros outstanding.”
• minor · dates — kept the value but never said “july”; a prompt fixes this (7 of 16 transcripts)
→ we sent “Your appointment is on 07/15/2026.”
→ it said “Your appointment is on zero seven fifteen, twenty twenty six.”
• minor · dates — kept the value but never said “january”; a prompt fixes this (7 of 16 transcripts)
→ we sent “Renewal falls on 1/1/2027.”
→ it said “Renewal falls on one one twenty twenty seven.”
• minor · dates — kept the value but never said “november”; a prompt fixes this (7 of 16 transcripts)
→ we sent “The policy started 11/30/2024.”
→ it said “The policy started eleven thirty twenty twenty four.”
• minor · dates — kept the value but never said “october”; a prompt fixes this (7 of 16 transcripts)
→ we sent “The deadline moved to 10/02.”
→ it said “The deadline moved to ten 'o two.”
• minor · dates — kept the value but never said “march”; a prompt fixes this (7 of 16 transcripts)
→ we sent “Your slot is 03/09 this year.”
→ it said “Your slot is zero three zero nine this year.”
• minor · dates (international, ×0.4) — kept the value but never said “march”; a prompt fixes this (7 of 16 transcripts)
→ we sent “The order shipped on 2026-03-09.”
→ it said “The order shipped on twenty twenty six o three zero nine.”
• minor · dates (international, ×0.4) — kept the value but never said “june”; a prompt fixes this (7 of 16 transcripts)
→ we sent “The lease ends 2025/06/30.”
→ it said “The lease ends twenty twenty five o six thirty.”
• fatal · large numbers — never said “zero zero” (5 of 5 transcripts)
→ we sent “Only 007 seats remain.”
→ it said “Only seven seats remain.”
• minor · math operators — kept the value but never said “minus”; a prompt fixes this (3 of 5 transcripts)
→ we sent “That leaves 10-4=6 remaining.”
→ it said “That leaves ten-four equals six remaining.”
• minor · math operators — kept the value but never said “three quarters”; a prompt fixes this (5 of 5 transcripts)
→ we sent “Give me 3/4 of the batch.”
→ it said “Give me three four of the batch.”
• minor · math operators — kept the value but never said “times”; a prompt fixes this (3 of 5 transcripts)
→ we sent “Check it: 7×8=56, not 54.”
→ it said “Check it, seven x eight equals fifty-six, not fifty-four.”
• fatal · math operators — never said “divided” (4 of 5 transcripts)
→ we sent “That is 100÷4=25 per person.”
→ it said “That is 104 equals 25 per person.”
• minor · math operators — kept the value but never said “two thirds”; a prompt fixes this (5 of 5 transcripts)
→ we sent “Use 2/3 cup of sugar.”
→ it said “Use two-three cup of sugar.”
Cost / 1M chars
$30.0
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