DeepSeek V4 Flash 0731 (Thinking) vs Qwen3.5-9B
Qwen3.5-9B is cheaper on output tokens, while DeepSeek V4 Flash 0731 (Thinking) offers a larger context window. Choose DeepSeek V4 Flash 0731 (Thinking) or Qwen3.5-9B based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | DeepSeek V4 Flash 0731 (Thinking) | Qwen3.5-9B |
|---|---|---|
| Provider | NanoGPT | Qwen |
| Input / 1M tokens | $0.05 | $0.10 |
| Output / 1M tokens | $0.16 | $0.15 |
| Context window | 1M | 262K |
| Parameters | — | — |
| Open weights | Yes | — |
| Released | Jul 2026 | — |
| GPQA Diamond score | — | 79.0 |
| Epoch Capabilities Index score | — | 139 |
FAQ
Is DeepSeek V4 Flash 0731 (Thinking) or Qwen3.5-9B cheaper?
Qwen3.5-9B is cheaper on output tokens ($0.15 vs $0.16 per 1M).
Which has the larger context window, DeepSeek V4 Flash 0731 (Thinking) or Qwen3.5-9B?
DeepSeek V4 Flash 0731 (Thinking) 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.