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Head to head

DeepSeek V4 Flash 0731vsLongCat 2.0

For tasks, about a month.

Verdict · measured basis

DeepSeek V4 Flash 0731 costs $0.0002 per solved task against LongCat 2.0 at $0.0036 — ▼ 21x cheaper. Over 200 tasks that is $0.69 a month.

On output token price alone DeepSeek V4 Flash 0731 looks 10x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for DeepSeek V4 Flash 0731 and LongCat 2.0
FigureDeepSeek V4 Flash 0731LongCat 2.0
Input $/Mtok$0.06$0.3
Output $/Mtok$0.12$1.2
Cached input $/Mtok$0.012$0.006
Pass rate89%81%
Cost per solved task$0.0002measured$0.0036measured
Cost per month$0.04$0.73

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for DeepSeek V4 Flash 0731 (measured, $0.0002 per solved task), LongCat 2.0 (measured, $0.0036 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$0.001$0.01$0.1$1$10$100TASKS / MONTH (log) →200 tasksDeepSeek V4 Flash 0731 · MEASURED · $0.0002 per solved task$0.04LongCat 2.0 · MEASURED · $0.0036 per solved task$0.73— DeepSeek V4 Flash 0731 · MEASURED— LongCat 2.0 · 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