lightning_v3.1

Naturalness

3.25

Win % · 95% CI

58%

51–64%

Drift

det

Synth p50

316ms

Cost / 1M chars

$25.0

Pay-as-you-go (Pro tier); ~$0.25/10k chars.

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https://benchmarks.speko.ai/tts/smallest-lightning-v3-1