Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Gemini 3.5 Flash (high) | o3 |
|---|---|---|
| Input ($/M tokens) | $1.5 | $2 |
| Output ($/M tokens) | $9 | $8 |
Data from Artificial Analysis API — 12 benchmarks
Gemini 3.5 Flash (high) is cheaper overall. Its blended price (3:1 input/output ratio) is $3.38/M tokens vs $3.50/M for o3.
Gemini 3.5 Flash (high) wins 7 out of 12 benchmarks compared to 5 for o3. See the detailed benchmark chart above for per-category results.
Gemini 3.5 Flash (high) generates tokens faster at 227 tok/s vs 86 tok/s. However, o3 has lower time-to-first-token (8.97s vs 9.75s).
Choose based on your priorities: Gemini 3.5 Flash (high) for lower cost, Gemini 3.5 Flash (high) for stronger benchmark performance, and Gemini 3.5 Flash (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.