Gemini 2.5 Flash TTS vs Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview is cheaper on output tokens, while Gemini 3.1 Flash Lite Preview offers a larger context window. Choose Gemini 2.5 Flash TTS or Gemini 3.1 Flash Lite Preview based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 2.5 Flash TTS | Gemini 3.1 Flash Lite Preview |
|---|---|---|
| Provider | Vertex | Vertex |
| Input / 1M tokens | $0.50 | $0.25 |
| Output / 1M tokens | $10.00 | $1.50 |
| Context window | 33K | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Sep 2025 | Mar 2026 |
FAQ
Is Gemini 2.5 Flash TTS or Gemini 3.1 Flash Lite Preview cheaper?
Gemini 3.1 Flash Lite Preview is cheaper on output tokens ($1.50 vs $10.00 per 1M).
Which has the larger context window, Gemini 2.5 Flash TTS or Gemini 3.1 Flash Lite Preview?
Gemini 3.1 Flash Lite Preview has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.