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Head to head

DeepSeek V4 FlashvsQwen3.7 Flash

For tasks, about a month.

Verdict · measured basis

Qwen3.7 Flash costs $0.0029 per solved task against DeepSeek V4 Flash at $0.02 — ▼ 6.5x cheaper. Over 200 tasks that is $3 a month.

On output token price alone Qwen3.7 Flash looks 10x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for DeepSeek V4 Flash and Qwen3.7 Flash
FigureDeepSeek V4 FlashQwen3.7 Flash
Input $/Mtok$0.44$0.03
Output $/Mtok$1.32$0.13
Cached input $/Mtok$0.014$0.006
Pass rate73%53%
Cost per solved task$0.02measured$0.0029measured
Cost per month$4$0.58

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for Qwen3.7 Flash (measured, $0.0029 per solved task), DeepSeek V4 Flash (measured, $0.02 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$0.1$1$10$100$1kTASKS / MONTH (log) →200 tasksQwen3.7 Flash · MEASURED · $0.0029 per solved task$0.58DeepSeek V4 Flash · MEASURED · $0.02 per solved task$4— Qwen3.7 Flash · MEASURED— DeepSeek V4 Flash · MEASURED

Solid measured · dashed modeled · dotted stale. The gap is the verdict.

Solvency Bench (solvency.dev) — first-party measurement · verified 2026-08-21 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings