DeepSeek Chat vs Qwen 3.5 27 B: cost comparison
Prices updated 2026-10-27 · computed from live provider data
Short answer: DeepSeek Chat is cheaper on a
3:1 input/output blend — $0.450 per million tokens versus
$0.845, a 47% difference.
Qwen 3.5 27 B offers the larger context window at 262,144 tokens, against 163,840 for DeepSeek Chat.
Head to head
| DeepSeek Chat | Qwen 3.5 27 B | |
|---|---|---|
| Input, per 1M tokens | $0.257 | $0.260 |
| Output, per 1M tokens | $1.03 | $2.60 |
| Blended 3:1, per 1M | $0.450 | $0.845 |
| Context window | 163,840 | 262,144 |
| Vendor | deepseek | qwen |
Monthly cost at real volumes
| Workload (input / output) | DeepSeek Chat | Qwen 3.5 27 B |
|---|---|---|
| 1M in / 250K out | $0.515 | $0.910 |
| 10M in / 2.5M out | $5.15 | $9.10 |
| 100M in / 25M out | $51.46 | $91.00 |
Which should you pick?
Pick Qwen 3.5 27 B when you need the longer context window (262,144 vs 163,840 tokens). Pick DeepSeek Chat when price per token dominates your workload — high-volume classification, extraction, or batch summarisation.