Skip to content
SOLVENCY

Head to head

Gemini 2.5 Pro vs Claude Opus 4

Gemini 2.5 Pro: legacyClaude Opus 4: retiredheavy tier

Verdict · modelled basis

Gemini 2.5 Pro costs 11x less per solved task.

On output token price alone, Gemini 2.5 Pro looks 7.5x cheaper (12x on input). The ranking holds, but the margin changes.

Source: Aider polyglot benchmark · verified 2026-08-21 · prices from each provider's pricing page

Input $/M tokens

lower is better

  • Gemini 2.5 Pro$1.25
  • Claude Opus 4$15

Output $/M tokens

lower is better

  • Gemini 2.5 Pro$10
  • Claude Opus 4$75

Cost per solved task

modelled basis · lower is better

  • Gemini 2.5 Pro$1.76
  • Claude Opus 4$18.75
Gemini 2.5 ProClaude Opus 4
Input $/Mtok$1.25$15
Output $/Mtok$10$75
Cached input $/Mtok$0.125$1.5
Pass rate83%72%
Pass rate sourceAiderAider
Cost basismodelledmodelled
Cost per solved task$1.76$18.75

verified 2026-08-21 · heavy task tier; measured rows ignore the tier· Methodology· Gemini 2.5 Pro· Claude Opus 4