Inworld
inworld-tts-2-flash
Measured 2026-09-03
* Conditional
Naturalness is an auto-MOS estimate (~), not a panel vote.
Naturalness
~1501
Win % · 95% CI
—
not measured
Drift
13
Synth p50
82ms
82–89 p50–p90
Robustness
0.93
Fined:
• minor · dates — said “slash” out loud; a prompt fixes this (4 of 7 transcripts)
→ we sent “The deadline moved to 10/02.”
→ it said “The deadline moved to 10 slash zero two.”
• minor · dates — kept the value but never said “march”; a prompt fixes this (4 of 7 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) — said “slash” out loud; a prompt fixes this (4 of 7 transcripts)
→ we sent “The lease ends 2025/06/30.”
→ it said “The lease ends 2025 slash six slash thirty.”
Cost / 1M chars
$15.0
On-demand.
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