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Head to head

Laguna S 2.1vsDeepSeek V4 Flash 0731

For tasks, about a month.

Verdict · measured basis

DeepSeek V4 Flash 0731 costs $0.0002 per solved task against Laguna S 2.1 at $0.0044 — ▼ 25x cheaper. Over 200 tasks that is $0.85 a month.

On output token price alone DeepSeek V4 Flash 0731 looks 1.5x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for Laguna S 2.1 and DeepSeek V4 Flash 0731
FigureLaguna S 2.1DeepSeek V4 Flash 0731
Input $/Mtok$0.09$0.06
Output $/Mtok$0.18$0.12
Cached input $/Mtok$0.009$0.012
Pass rate23%89%
Cost per solved task$0.0044measured$0.0002measured
Cost per month$0.89$0.04

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), Laguna S 2.1 (measured, $0.0044 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$0.04Laguna S 2.1 · MEASURED · $0.0044 per solved task$0.89— DeepSeek V4 Flash 0731 · MEASURED— Laguna S 2.1 · 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