Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | DeepSeek V3.1 Terminus (Reasoning) | Gemini 3 Flash Preview (Reasoning) |
|---|---|---|
| Input ($/M tokens) | $1.635 | $0.5 |
| Output ($/M tokens) | $2.75 | $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 $1.91/M for DeepSeek V3.1 Terminus (Reasoning).
Gemini 3 Flash Preview (Reasoning) wins 11 out of 12 benchmarks compared to 0 for DeepSeek V3.1 Terminus (Reasoning). See the detailed benchmark chart above for per-category results.
Gemini 3 Flash Preview (Reasoning) generates tokens faster at 199 tok/s vs 0 tok/s. DeepSeek V3.1 Terminus (Reasoning) also has lower time-to-first-token (0.00s vs 6.20s).
Choose based on your priorities: Gemini 3 Flash Preview (Reasoning) for lower cost, Gemini 3 Flash Preview (Reasoning) for stronger benchmark performance, and Gemini 3 Flash Preview (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.