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Head to head

DeepSeek V4 FlashvsLlama 3.1 70B Instruct

For tasks, about a month.

Verdict · measured basis

Llama 3.1 70B Instruct costs $0.0005 per solved task against DeepSeek V4 Flash at $0.02 — ▼ 35x cheaper. Over 200 tasks that is $4 a month.

On output token price alone Llama 3.1 70B Instruct looks 3.3x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for DeepSeek V4 Flash and Llama 3.1 70B Instruct
FigureDeepSeek V4 FlashLlama 3.1 70B Instruct
Input $/Mtok$0.44$0.4
Output $/Mtok$1.32$0.4
Cached input $/Mtok$0.014$0.4
Pass rate73%50%
Cost per solved task$0.02measured$0.0005measured
Cost per month$4$0.11

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for Llama 3.1 70B Instruct (measured, $0.0005 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$0.01$0.1$1$10$100$1kTASKS / MONTH (log) →200 tasksLlama 3.1 70B Instruct · MEASURED · $0.0005 per solved task$0.11DeepSeek V4 Flash · MEASURED · $0.02 per solved task$4— Llama 3.1 70B Instruct · 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