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Cartesia
sonic-3
* Conditional
Naturalness is an auto-MOS estimate (~), not a panel vote — ±20 Elo leave-one-out, a tie not a rank. Voice: Katie (panel voice). Synth arrives from the 2026-09-08 vendor-direct sweep.
Naturalness
~1551
Win % · 95% CI
—
Drift
—
not measured
Synth p50
—
not measured
Robustness
—
Not yet measured: the en-US NSW robustness battery has not been run on this model (row added 2026-09-08 with an auto-MOS naturalness estimate). Pending, not exempt.
Cost / 1M chars
$50.0
Derived, not published: Cartesia documents "approximately 1 credit per character" and Pro at $5/100K credits — the same basis as the sonic-3.5 and sonic-3.6 rows.
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