o3-pro vs Gemini 3.5 Flash
Gemini 3.5 Flash is cheaper on output tokens, while Gemini 3.5 Flash offers a larger context window. Choose o3-pro or Gemini 3.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | o3-pro | Gemini 3.5 Flash |
|---|---|---|
| Provider | Abacus | Abacus |
| Input / 1M tokens | $20.00 | $1.50 |
| Output / 1M tokens | $40.00 | $9.00 |
| Context window | 200K | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Jun 2025 | May 2026 |
FAQ
Is o3-pro or Gemini 3.5 Flash cheaper?
Gemini 3.5 Flash is cheaper on output tokens ($9.00 vs $40.00 per 1M).
Which has the larger context window, o3-pro or Gemini 3.5 Flash?
Gemini 3.5 Flash 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.