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Head to head

gpt-oss-20bvsMythoMax 13B

For tasks, about a month.

Verdict · measured basis

MythoMax 13B costs $0.0002 per solved task against gpt-oss-20b at $0.0003 — ▼ 1.3x cheaper. Over 200 tasks that is $0.01 a month.

On output token price alone MythoMax 13B looks 2.2x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for gpt-oss-20b and MythoMax 13B
Figuregpt-oss-20bMythoMax 13B
Input $/Mtok$0.03$0.06
Output $/Mtok$0.13$0.06
Cached input $/Mtok$0.03$0.06
Pass rate94%11%
Cost per solved task$0.0003measured$0.0002measured
Cost per month$0.05$0.04

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for MythoMax 13B (measured, $0.0002 per solved task), gpt-oss-20b (measured, $0.0003 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$0.01$0.1$1$10TASKS / MONTH (log) →200 tasksMythoMax 13B · MEASURED · $0.0002 per solved task$0.04gpt-oss-20b · MEASURED · $0.0003 per solved task$0.05— MythoMax 13B · MEASURED— gpt-oss-20b · 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