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Head to head

GPT-5 NanovsGemma 3 4B

For tasks, about a month.

Verdict · measured basis

Gemma 3 4B costs $0.0000 per solved task against GPT-5 Nano at $0.0010 — ▼ 22x cheaper. Over 200 tasks that is $0.20 a month.

On output token price alone Gemma 3 4B looks 4.0x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for GPT-5 Nano and Gemma 3 4B
FigureGPT-5 NanoGemma 3 4B
Input $/Mtok$0.05$0.05
Output $/Mtok$0.4$0.1
Cached input $/Mtok$0.005$0.05
Pass rate100%50%
Cost per solved task$0.0010measured$0.0000measured
Cost per month$0.21$0.01

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for Gemma 3 4B (measured, $0.0000 per solved task), GPT-5 Nano (measured, $0.0010 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 tasksGemma 3 4B · MEASURED · $0.0000 per solved task$0.01GPT-5 Nano · MEASURED · $0.0010 per solved task$0.21— Gemma 3 4B · MEASURED— GPT-5 Nano · 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