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Head to head

DeepSeek V4 FlashvsLongCat 2.0

For tasks, about a month.

Verdict · measured basis

LongCat 2.0 costs $0.0036 per solved task against DeepSeek V4 Flash at $0.02 — ▼ 5.1x cheaper. Over 200 tasks that is $3 a month.

On output token price alone LongCat 2.0 looks 1.1x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for DeepSeek V4 Flash and LongCat 2.0
FigureDeepSeek V4 FlashLongCat 2.0
Input $/Mtok$0.44$0.3
Output $/Mtok$1.32$1.2
Cached input $/Mtok$0.014$0.006
Pass rate73%81%
Cost per solved task$0.02measured$0.0036measured
Cost per month$4$0.73

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for LongCat 2.0 (measured, $0.0036 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 tasksLongCat 2.0 · MEASURED · $0.0036 per solved task$0.73DeepSeek V4 Flash · MEASURED · $0.02 per solved task$4— LongCat 2.0 · 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