Head to head
QW vs QW For light moderate heavy
Verdict · measured basis
Qwen3.5-Flash costs $0.0015 per solved task against
Qwen3.7 Flash at $0.0029 — ▼ 2.0x cheaper .
Over 200 tasks that is $0.29 a month.
On output token price alone Qwen3.7 Flash looks 2.0x cheaper. The ranking reverses once you divide by pass rate — the cheaper tokens do not win the task.
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Verified pricing, pass rate and cost per solved task for Qwen3.7 Flash and Qwen3.5-Flash Figure Qwen3.7 Flash Qwen3.5-Flash Input $/Mtok $0.03 $0.065 Output $/Mtok $0.13 $0.26 Cached input $/Mtok $0.006 $0.065 Pass rate 53% 89% Cost per solved task $0.0029 measured $0.0015 measured Cost per month $0.58 $0.29
Cost per month against tasks per month · drag the marker
Monthly cost against tasks per month Log-log lines for Qwen3.5-Flash (measured, $0.0015 per solved task), Qwen3.7 Flash (measured, $0.0029 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks. 10 100 1k 10k 100k $0.01 $0.1 $1 $10 $100 TASKS / MONTH (log) → 200 tasks Qwen3.5-Flash · MEASURED · $0.0015 per solved task $0.29 Qwen3.5-Flash MEASURED Qwen3.7 Flash · MEASURED · $0.0029 per solved task $0.58 Qwen3.7 Flash MEASURED Monthly cost against tasks per month Log-log lines for Qwen3.5-Flash (measured, $0.0015 per solved task), Qwen3.7 Flash (measured, $0.0029 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks. 10 100 1k 10k 100k $0.01 $0.1 $1 $10 $100 TASKS / MONTH (log) → 200 tasks Qwen3.5-Flash · MEASURED · $0.0015 per solved task $0.29 Qwen3.7 Flash · MEASURED · $0.0029 per solved task $0.58 — Qwen3.5-Flash · MEASURED — Qwen3.7 Flash · MEASURED 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