Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | GPT-5.2 (xhigh) | Gemini 3 Flash Preview (Reasoning) |
|---|---|---|
| Input ($/M tokens) | $1.75 | $0.5 |
| Output ($/M tokens) | $14 | $3 |
Data from Artificial Analysis API — 12 benchmarks
Gemini 3 Flash Preview (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $1.13/M tokens vs $4.81/M for GPT-5.2 (xhigh).
GPT-5.2 (xhigh) wins 8 out of 12 benchmarks compared to 3 for Gemini 3 Flash Preview (Reasoning). See the detailed benchmark chart above for per-category results.
Gemini 3 Flash Preview (Reasoning) generates tokens faster at 180 tok/s vs 66 tok/s. However, Gemini 3 Flash Preview (Reasoning) has lower time-to-first-token (6.33s vs 74.69s).
Choose based on your priorities: Gemini 3 Flash Preview (Reasoning) for lower cost, GPT-5.2 (xhigh) for stronger benchmark performance, and Gemini 3 Flash Preview (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.