Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Gemini 2.5 Pro Preview (May' 25) | Gemini 3 Pro Preview (high) |
|---|---|---|
| Input ($/M tokens) | $1.25 | $2 |
| Output ($/M tokens) | $10 | $12 |
Data from Artificial Analysis API — 12 benchmarks
Gemini 2.5 Pro Preview (May' 25) is cheaper overall. Its blended price (3:1 input/output ratio) is $3.44/M tokens vs $4.50/M for Gemini 3 Pro Preview (high).
Gemini 3 Pro Preview (high) wins 11 out of 12 benchmarks compared to 1 for Gemini 2.5 Pro Preview (May' 25). See the detailed benchmark chart above for per-category results.
Gemini 3 Pro Preview (high) generates tokens faster at 126 tok/s vs 0 tok/s. Gemini 2.5 Pro Preview (May' 25) also has lower time-to-first-token (0.00s vs 20.82s).
Choose based on your priorities: Gemini 2.5 Pro Preview (May' 25) for lower cost, Gemini 3 Pro Preview (high) for stronger benchmark performance, and Gemini 3 Pro Preview (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.