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Comparison of Google: Gemini 3.8 Flash TTS, LiquidAI: d1-ultra
2 modelsgoogleGoogle: Gemini 3.8 Flash TTSRemove ×liquidLiquidAI: d1-ultraRemove ×
What’s differentSeparates spoken text from delivery instructions; supports exactly two named speakers with ordered dialogue turns.d1-ultra is Liquid AI's largest decision model, served as a System One endpoint. Send a state of text and images along with typed questions, and it returns a choice, a...
DateSep 23, 2026ReleasedOct 15, 2026Listed
Listed rate$0.045/ 1K charactersfal · all routes ↗$0.042 in / $0.00 out/ 1M tokensOpenRouter · all routes ↗
Provider endpoints1 endpoint →1 endpoint →
AA Native Voice ↗Unversioned · provider native voices1,275.38 ↗Provider native voices · all categories · US + UK accents · 8 listed voicesIndependent result95% CI 1,260.38–1,290.38 · n=2,783Not reported
Context window32.8K32.8K
Max output16.4K29.5K
Parameters——
Image inputNot reportedSupported
Prompt cachingNot reportedSupported

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