Gemini 3.8 Flash-Lite TTS vs GPT-6 Luna
A direct, empirical evaluation of Gemini 3.8 Flash-Lite TTS (Google DeepMind) against GPT-6 Luna (OpenAI).
Gemini 3.8 Flash-Lite TTS
Developed by Google DeepMind · Proprietary Lightweight Acoustic Stream Transformer parameters
High-throughput bulk multilingual video dubbing, automated notification dispatch, real-time voice agents, customer support telephony, and accessibility readers.
GPT-6 Luna
Developed by OpenAI · Proprietary High-Throughput Distillation parameters
High-throughput document extraction, sub-second routing, customer service triage, code autocomplete, and cost-optimized reasoning via Luna Pro mode.
| Metric | Gemini 3.8 Flash-Lite TTS | GPT-6 Luna |
|---|---|---|
| SWE-bench Verified | 58.4% | 48.2% |
| MMLU-Pro | 82.1% | 74.6% |
| MATH-500 | 85.2% | 84.1% |
| Context Window | 64,000 characters input script | 1,050,000 tokens |
| Input Pricing (per 1M) | $0.08 | $0.10 |
| Output Pricing (per 1M) | $6.00 | $0.50 |