Head to head
vs For light moderate heavy
Verdict · measured basis
GPT-4.1 Nano costs $0.0001 per solved task against
Gemini 2.5 Flash Lite at $0.0001 — ▼ 1.1x cheaper .
Over 200 tasks that is $0.00 a month.
On output token price alone Gemini 2.5 Flash Lite looks 1.0x cheaper. The ranking reverses once you divide by pass rate — the cheaper tokens do not win the task.
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Verified pricing, pass rate and cost per solved task for Gemini 2.5 Flash Lite and GPT-4.1 Nano Figure Gemini 2.5 Flash Lite GPT-4.1 Nano Input $/Mtok $0.1 $0.1 Output $/Mtok $0.4 $0.4 Cached input $/Mtok $0.01 $0.025 Pass rate 72% 72% Cost per solved task $0.0001 measured $0.0001 measured Cost per month $0.02 $0.02
Cost per month against tasks per month · drag the marker
Monthly cost against tasks per month Log-log lines for GPT-4.1 Nano (measured, $0.0001 per solved task), Gemini 2.5 Flash Lite (measured, $0.0001 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks. 10 100 1k 10k 100k $0.001 $0.01 $0.1 $1 $10 TASKS / MONTH (log) → 200 tasks GPT-4.1 Nano · MEASURED · $0.0001 per solved task $0.02 GPT-4.1 Nano MEASURED Gemini 2.5 Flash Lite · MEASURED · $0.0001 per solved task $0.02 Gemini 2.5 Flash Lite MEASURED Monthly cost against tasks per month Log-log lines for GPT-4.1 Nano (measured, $0.0001 per solved task), Gemini 2.5 Flash Lite (measured, $0.0001 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks. 10 100 1k 10k 100k $0.001 $0.01 $0.1 $1 $10 TASKS / MONTH (log) → 200 tasks GPT-4.1 Nano · MEASURED · $0.0001 per solved task $0.02 Gemini 2.5 Flash Lite · MEASURED · $0.0001 per solved task $0.02 — GPT-4.1 Nano · MEASURED — Gemini 2.5 Flash Lite · 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