← Text-to-Speech

Qwen

qwen3-tts-flash

Measured 2026-07-03

Naturalness

1310

Win % · 95% CI

21%

16–27%

Drift

21

Synth p50

472ms

472–504 p50–p90

Robustness

0.50

Fined:

• fatal · currency — dropped the minus sign (3 of 5 transcripts)

→ we sent “The balance is -$12.50.”

→ it said “The balance is twelve point five dollars.”

• fatal · currency — dropped the minus sign (5 of 5 transcripts)

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

→ it said “Your balance is $9,204.59 as of today.”

• fatal · currency (international, ×0.4) — dropped the minus sign (5 of 5 transcripts)

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

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

• serious · dates — never said “january” or “first” (10 of 16 transcripts)

→ we sent “Renewal falls on 1/1/2027.”

→ it said “Renewal fights on Eins Einsweitausen Siemenfantsen.”

• serious · dates — never said “october” (8 of 16 transcripts)

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

→ it said “The deadline moved to tennis two.”

Cost / 1M chars

$10.0

International (Singapore) list: $0.10 per 10,000 input characters, output audio not billed (alibabacloud.com/help/en/model-studio/model-pricing). A true per-character rate, no conversion. Mainland-China scope is ~$0.115/10k.

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