← Text-to-Speech

Rime

arcanav3

Measured 2026-07-03

Naturalness

1429

Win % · 95% CI

36%

31–42%

Drift

21

Synth p50

238ms

238–248 p50–p90

Robustness

0.50

Fined:

• fatal · currency — dropped the minus sign (7 of 7 transcripts)

→ we sent “The balance is -$12.50.”

→ it said “The balance is twelve dollars fifty cents.”

• fatal · currency — dropped the minus sign (7 of 7 transcripts)

→ we sent “Your balance is -$1,204.50 as of today.”

→ it said “Your balance is $1,204.50 as of today.”

• fatal · currency — dropped the minus sign (7 of 7 transcripts)

→ we sent “A refund of -$0.99 was applied.”

→ it said “A refund of ninety-nine cents was applied.”

• fatal · currency (international, ×0.4) — dropped the minus sign (7 of 7 transcripts)

→ we sent “Balance: -€45,90 outstanding.”

→ it said “Balance: €45,90 outstanding.”

• minor · dates — kept the value but never said “october”; a prompt fixes this (7 of 23 transcripts)

→ we sent “The deadline moved to 10/02.”

→ it said “The deadline moved to ten zero two.”

• minor · dates — kept the value but never said “march”; a prompt fixes this (3 of 7 transcripts)

→ we sent “Your slot is 03/09 this year.”

→ it said “Your slot is zero three zero nine this year.”

• minor · large numbers — kept the value but never said “twelve thousand”; a prompt fixes this (7 of 7 transcripts)

→ we sent “We shipped 12,003 units.”

→ it said “We shipped one-two-zero-zero-three units.”

• minor · large numbers — kept the value but never said “three point seven five million”; a prompt fixes this (4 of 7 transcripts)

→ we sent “We reviewed 3,750,000 documents.”

→ it said “We reviewed three seven five zero zero zero zero zero zero documents.”

• minor · large numbers — kept the value but never said “one million”; a prompt fixes this (9 of 23 transcripts)

→ we sent “We shipped 1,000,000 units last year.”

→ it said “We shipped one zero zero zero zero zero zero zero zero units last year.”

• minor · math operators — said “equal sign”, “equals sign” out loud; a prompt fixes this (6 of 7 transcripts)

→ we sent “Remember that 2+2=4 always.”

→ it said “Remember that 2 plus 2 equals sign 4 always.”

Cost / 1M chars

$40.0

Arcana on Starter; $30 on Growth. The vendor pricing page contradicts itself — its FAQ quotes $0.05/1k and its card quotes the cheaper Mist rate.

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