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SOLVENCY

Head to head

Gemini 3.1 Pro (preview) vs Claude Fable 5

Gemini 3.1 Pro (preview): currentClaude Fable 5: currentheavy tier

No verdict

One cost is measured by its benchmark and the other is modelled by Solvency. The two bases are never ranked against each other, so no verdict is given here.

Source: Scale SEAL leaderboard, SWE-bench Pro · verified 2026-08-21 · prices from each provider's pricing page

Input $/M tokens

lower is better

  • Gemini 3.1 Pro (preview)$2
  • Claude Fable 5$10

Output $/M tokens

lower is better

  • Gemini 3.1 Pro (preview)$12
  • Claude Fable 5$50

Cost per solved task

different bases — not comparable

  • Gemini 3.1 Pro (preview)$4.30
  • Claude Fable 5$17.46
Gemini 3.1 Pro (preview)Claude Fable 5
Input $/Mtok$2$10
Output $/Mtok$12$50
Cached input $/Mtok$0.2$1
Pass rate46%67%
Pass rate sourceSEALAA
Cost basismodelledmeasured
Cost per solved task$4.30$17.46

verified 2026-08-21 · heavy task tier; measured rows ignore the tier· Methodology· Gemini 3.1 Pro (preview)· Claude Fable 5