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SOLVENCY

Head to head

Claude Opus 5 vs Claude Fable 5

For tasks, about a month.

Verdict · measured basis

Claude Opus 5 costs $12.01 per solved task against Claude Fable 5 at $17.46 — ▼ 1.5x cheaper. Over 200 tasks that is $1.1k a month.

On output token price alone Claude Opus 5 looks 2.0x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for Claude Opus 5 and Claude Fable 5
FigureClaude Opus 5Claude Fable 5
Input $/Mtok$5$10
Output $/Mtok$25$50
Cached input $/Mtok$0.5$1
Pass rate68%67%
Cost per solved task$12.01measured$17.46measured
Cost per month$2.4k$3.5k

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for Claude Opus 5 (measured, $12.01 per solved task), Claude Fable 5 (measured, $17.46 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$100$1k$10k$100k$1MTASKS / MONTH (log) →200 tasksClaude Opus 5 · MEASURED · $12.01 per solved task$2.4kClaude Fable 5 · MEASURED · $17.46 per solved task$3.5k— Claude Opus 5 · MEASURED— Claude Fable 5 · MEASURED

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

Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings