Gemini 3 Pro Image vs Gemini 1.5 Flash
Gemini 1.5 Flash is cheaper on output tokens, while Gemini 1.5 Flash offers a larger context window. Choose Gemini 3 Pro Image or Gemini 1.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 3 Pro Image | Gemini 1.5 Flash |
|---|---|---|
| Provider | NanoGPT | NanoGPT |
| Input / 1M tokens | $2.00 | $0.07 |
| Output / 1M tokens | $12.00 | $0.31 |
| Context window | 66K | 2M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Nov 2025 | May 2024 |
| LMArena (Chatbot Arena) Elo score | — | 1287 |
| LMArena Vision Elo score | — | 1141 |
| Epoch Capabilities Index score | — | 129 |
FAQ
Is Gemini 3 Pro Image or Gemini 1.5 Flash cheaper?
Gemini 1.5 Flash is cheaper on output tokens ($0.31 vs $12.00 per 1M).
Which has the larger context window, Gemini 3 Pro Image or Gemini 1.5 Flash?
Gemini 1.5 Flash has the larger context window (2M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.