ElevenLabs Eleven V4 & V4 Turbo vs Gemini 3.8 Flash TTS
A direct, empirical evaluation of ElevenLabs Eleven V4 & V4 Turbo (ElevenLabs) against Gemini 3.8 Flash TTS (Google DeepMind).
ElevenLabs Eleven V4 & V4 Turbo
Developed by ElevenLabs · Frontier Neural Acoustic Waveform Transformer parameters
Real-time conversational voice agents (<80ms latency), 90-language studio voice cloning, granular emotional tags (<whisper>, <shout>), and 48kHz production voice synthesis.
Gemini 3.8 Flash TTS
Developed by Google DeepMind · Proprietary Multimodal Acoustic Flow Matching Transformer parameters
High-fidelity expressive podcasts, interactive video game dialogues, scripted multi-speaker conversations, and prompt-designed custom character voices.
| Metric | ElevenLabs Eleven V4 & V4 Turbo | Gemini 3.8 Flash TTS |
|---|---|---|
| SWE-bench Verified | 0% | 64.2% |
| MMLU-Pro | 0% | 88.5% |
| MATH-500 | 0% | 91% |
| Context Window | 128,000 characters | 128,000 characters input dialogue script |
| Input Pricing (per 1M) | $0.15 | $0.15 |
| Output Pricing (per 1M) | $0.30 | $15.00 |