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SOLVENCY

Head to head

o3 vs Claude Opus 4

o3 is legacy; Claude Opus 4 is retired.

For tasks, about a month.

Verdict · stale basis

o3 costs $0.89 per solved task against Claude Opus 4 at $8.33 — ▼ 9.4x cheaper. Over 200 tasks that is $1.5k a month.

On output token price alone o3 looks 9.4x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for o3 and Claude Opus 4
Figureo3Claude Opus 4
Input $/Mtok$2$15
Output $/Mtok$8$75
Cached input $/Mtok$0.5$1.5
Pass rate81%72%
Cost per solved task$0.89stale$8.33stale
Cost per month$177$1.7k

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for o3 (stale, $0.89 per solved task), Claude Opus 4 (stale, $8.33 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$10$100$1k$10k$100k$1MTASKS / MONTH (log) →200 taskso3 · STALE · $0.89 per solved task$177Claude Opus 4 · STALE · $8.33 per solved task$1.7k— o3 · STALE— Claude Opus 4 · STALE

Solid measured · dashed modelled · dotted stale. The gap is the verdict.

Source: Aider polyglot benchmark · verified 2026-08-21 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings