whatmodel.sh / tts / Lightning v3.1 Pro

Lightning v3.1 Pro

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Lightning v3.1 Pro is a closed-weights text-to-speech model from Smallest.ai, released July 2026. Licence: proprietary.

No comparable score yet. No reviewed benchmark results yet.

$ how it compares

Scored text-to-speech models released closest to Lightning v3.1 Pro, out of 148 with a score, then more from Smallest.ai.

#modelscorewhereRAMreleased
13Simba 3.2 Speechify67±3api $6.00/M chars2026-07
67Fasih-TTS-V1 NightPrince (Yahya Elnawasany)55±10local~1.9GB2026-07
106Nabra-82M v0.1 oddadmix42±10local~0.3GB2026-07
113Magpie TTS Multilingual 357M NVIDIA39±6local~0.7GB2026-07
148FreyaTTS-small Freya Voice9±4comparison only2026-07
more from Smallest.ai
71Lightning v3.1 Smallest.ai53±3api $17.50/M chars2026-03

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$ where to run it

Through an API

api · $19.50/M chars · smallest.ai ↗ · price sourceUSD per 1M characters: Smallest.ai lists Lightning v3.1 Pro at approximately $0.195 per 10,000 characters, pay as you go (x100). Product: Lightning text-to-speech API. API model: Lightning v3.1 Pro. Settings: pay-as-you-go. Price basis: published (approximate) list rate, per-10K to per-1M scaling only. Exclusions: enterprise/custom pricing, add-ons. Currency: USD. Smallest.ai official model pricing page, observed 2026-09-25.

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