Gemini 3.8 Flash TTS vs Gemini 4 Pro (Leaked Benchmark)
A direct, empirical evaluation of Gemini 3.8 Flash TTS (Google DeepMind) against Gemini 4 Pro (Leaked Benchmark) (Google DeepMind).
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.
Gemini 4 Pro (Leaked Benchmark)
Developed by Google DeepMind · Proprietary Omni-Modal Unified Diffusion Transformer parameters
Repository-scale 2M-token refactoring (88.7% DeepSWE v1.1), headless shell execution (95.3% Terminal-Bench 2.1), and multimodal desktop agent autonomy (86.8% OSWorld 2.0).
| Metric | Gemini 3.8 Flash TTS | Gemini 4 Pro (Leaked Benchmark) |
|---|---|---|
| SWE-bench Verified | 64.2% | 88.7% |
| MMLU-Pro | 88.5% | 93.8% |
| MATH-500 | 91% | 97.8% |
| Context Window | 128,000 characters input dialogue script | 2,000,000 tokens |
| Input Pricing (per 1M) | $0.15 | $2.25 |
| Output Pricing (per 1M) | $15.00 | $11.25 |