gemini-2.5-flash-preview-09-2025 vs Gemini 3.5 Flash Lite
Both have similar output pricing, while Gemini 3.5 Flash Lite offers a larger context window. Choose gemini-2.5-flash-preview-09-2025 or Gemini 3.5 Flash Lite based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | gemini-2.5-flash-preview-09-2025 | Gemini 3.5 Flash Lite |
|---|---|---|
| Provider | 302.AI | |
| Input / 1M tokens | $0.30 | $0.30 |
| Output / 1M tokens | $2.50 | $2.50 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Sep 2025 | — |
| LMArena (Chatbot Arena) Elo score | 1406 | 1435 |
| LMArena Vision Elo score | 1253 | 1268 |
| LMArena WebDev Elo score | — | 1440 |
| GPQA Diamond score | — | 83.3 |
| Epoch Capabilities Index score | — | 145 |
FAQ
Is gemini-2.5-flash-preview-09-2025 or Gemini 3.5 Flash Lite cheaper?
gemini-2.5-flash-preview-09-2025 and Gemini 3.5 Flash Lite have comparable output pricing.
Which has the larger context window, gemini-2.5-flash-preview-09-2025 or Gemini 3.5 Flash Lite?
Gemini 3.5 Flash Lite 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.