Head to head
Qwen3.5-FlashvsStep 3.5 Flash
For tasks, about a month.
Verdict · measured basis
Qwen3.5-Flash costs $0.0015 per solved task against
Step 3.5 Flash at $0.0031 — ▼ 2.1x cheaper.
Over 200 tasks that is $0.33 a month.
On output token price alone Qwen3.5-Flash looks 1.2x cheaper. The ranking holds, but the margin changes.
Verified pricing, pass rate and cost per solved task for Qwen3.5-Flash and Step 3.5 Flash| Figure | Qwen3.5-Flash | Step 3.5 Flash |
|---|
| Input $/Mtok | $0.065 | $0.1 |
|---|
| Output $/Mtok | $0.26 | $0.3 |
|---|
| Cached input $/Mtok | $0.065 | $0.1 |
|---|
| Pass rate | 89% | 50% |
|---|
| Cost per solved task | $0.0015measured | $0.0031measured |
|---|
| Cost per month | $0.29 | $0.62 |
|---|
Cost per month against tasks per month · drag the marker
Solid measured · dashed modeled · dotted stale. The gap is the verdict.
Solvency Bench (solvency.dev) — first-party measurement · verified 2026-08-26 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings