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Head to head

Gemma 4 31BvsLlama 3.1 70B Instruct

For tasks, about a month.

Verdict · measured basis

Gemma 4 31B costs $0.0001 per solved task against Llama 3.1 70B Instruct at $0.0005 — ▼ 6.3x cheaper. Over 200 tasks that is $0.09 a month.

On output token price alone Gemma 4 31B looks 1.2x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for Gemma 4 31B and Llama 3.1 70B Instruct
FigureGemma 4 31BLlama 3.1 70B Instruct
Input $/Mtok$0.09$0.4
Output $/Mtok$0.34$0.4
Cached input $/Mtok$0.05$0.4
Pass rate83%50%
Cost per solved task$0.0001measured$0.0005measured
Cost per month$0.02$0.11

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for Gemma 4 31B (measured, $0.0001 per solved task), Llama 3.1 70B Instruct (measured, $0.0005 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$0.001$0.01$0.1$1$10TASKS / MONTH (log) →200 tasksGemma 4 31B · MEASURED · $0.0001 per solved task$0.02Llama 3.1 70B Instruct · MEASURED · $0.0005 per solved task$0.11— Gemma 4 31B · MEASURED— Llama 3.1 70B Instruct · 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