Gemini 2.5 Flash Native Audio Preview vs Gemini 3.8 Flash Tts: cost comparison
Prices updated 2026-10-27 · computed from live provider data
Short answer: Gemini 2.5 Flash Native Audio Preview is cheaper on a
3:1 input/output blend — $0.875 per million tokens versus
$2.62, a 67% difference.
Gemini 2.5 Flash Native Audio Preview offers the larger context window at 1,048,576 tokens, against 8,192 for Gemini 3.8 Flash Tts.
Head to head
| Gemini 2.5 Flash Native Audio Preview | Gemini 3.8 Flash Tts | |
|---|---|---|
| Input, per 1M tokens | $0.500 | $0.500 |
| Output, per 1M tokens | $2.00 | $9.00 |
| Blended 3:1, per 1M | $0.875 | $2.62 |
| Context window | 1,048,576 | 8,192 |
| Vendor | gemini | gemini |
Monthly cost at real volumes
| Workload (input / output) | Gemini 2.5 Flash Native Audio Preview | Gemini 3.8 Flash Tts |
|---|---|---|
| 1M in / 250K out | $1.00 | $2.75 |
| 10M in / 2.5M out | $10.00 | $27.50 |
| 100M in / 25M out | $100 | $275 |
Which should you pick?
Pick Gemini 2.5 Flash Native Audio Preview when you need the longer context window (1,048,576 vs 8,192 tokens). Pick Gemini 2.5 Flash Native Audio Preview when price per token dominates your workload — high-volume classification, extraction, or batch summarisation.