qwen/qwen3.5-plus-20260420 vs qwen/qwen3.7-flash
For 100,000 calls of 2,000 in and 500 out, qwen/qwen3.7-flash is cheaper: $12.50 a month at OpenRouter, against $150.00 for qwen/qwen3.5-plus-20260420 at OpenRouter — 12.0× the cost.
Cheapest on each
qwen/qwen3.5-plus-20260420
$150.00/mo
cheapest, at OpenRouter — $0.3 in, $1.8 out per million
qwen/qwen3.7-flash
$12.50/mo
cheapest, at OpenRouter — $0.03 in, $0.13 out per million
Aligned facts
Same rows on both sides, including the ones we cannot fill.
| Attribute | qwen/qwen3.5-plus-20260420 | qwen/qwen3.7-flash |
|---|---|---|
| Context window | 1M | 1M |
| Accepts | Aa · IMG · VID | Aa · IMG · VID |
| Sellers | 1 | 1 |
| Cheapest input rate | $0.3 / M | $0.03 / M |
| Cached input rate | ○ no answer | $0.006 / M |
No quality or benchmark row appears here. We hold no throughput or accuracy measurement for either model, and a cost-per-quality figure built from a lab’s own claim would look authoritative and mean nothing.
Cost for this workload — both models, every seller
100,000 calls a month · 2,000 input and 500 output tokens each. Sellers of both models lead, cheapest combined cost first.
| Seller | qwen/qwen3.5-plus-20260420 /mo | qwen/qwen3.7-flash /mo |
|---|---|---|
| OpenRouter | $150.002026-10-27 | $12.502026-10-27 |
Cheapest tier per seller, this workload only. In and output rates, and a cached prefix, are broken out in the cost calculator.