← Text-to-Speech

Hume

octave-2

Measured 2026-07-03

Naturalness

1377

Win % · 95% CI

29%

24–34%

Drift

25

Synth p50

448ms

448–497 p50–p90

Robustness

0.20

Fined:

• fatal · currency — dropped the minus sign (6 of 7 transcripts)

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

→ it said “A refund of $0.99 was applied.”

• minor · dates — said “slash” out loud; a prompt fixes this (5 of 18 transcripts)

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

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

• minor · dates — said “slash” out loud; a prompt fixes this (7 of 23 transcripts)

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

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

• fatal · large numbers — never said “four thousand ninety six” (5 of 18 transcripts)

→ we sent “The file is 4096 bytes.”

→ it said “The file is four nine hundred and ninety six bytes.”

• fatal · math operators — never said “fifteen” (5 of 7 transcripts)

→ we sent “The area is 5×3=15 square metres.”

→ it said “The area is five by three square meters.”

• minor · math operators — kept the value but never said “minus”; a prompt fixes this (4 of 7 transcripts)

→ we sent “That leaves 10-4=6 remaining.”

→ it said “That leaves ten to four, equals six remaining.”

Cost / 1M chars

$100.0

Starter tier, no pay-as-you-go rate published. Falls to $50 on Business; entry overage is $150.

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