gemini-3.8-flash-lite-tts

Fined:

• fatal · currency — dropped the minus sign (4 of 7 transcripts)

→ we sent “The balance is -$12.50.”

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

• minor · dates · promptable — kept the value but never said “january” (7 of 7 transcripts)

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

→ it said “Renewal falls on one one twenty twenty-seven.”

• minor · dates · promptable (international, ×0.4) — kept the value but never said “march” (7 of 7 transcripts)

→ we sent “The order shipped on 2026-03-09.”

→ it said “The order shipped on twenty twenty six zero three zero nine.”

+ 3 more fined

Token-billed: $0.50/1M text in, $6/1M audio out until 2026-12-31, then $1 / $12 (ai.google.dev/gemini-api/docs/pricing). At 25 audio tokens/sec and 900 chars/min of speech that is ~$10 per 1M chars, ~$20 from 2027-01-01.