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SOLVENCY

Head to head

Claude Sonnet 5 vs Grok 4.5

Claude Sonnet 5: currentGrok 4.5: currentheavy tier

No verdict

Cost per solved task needs a published pass rate for both models. At least one has none, so it is reported as missing rather than estimated.

verified 2026-08-21 · prices from each provider's pricing page

Input $/M tokens

lower is better

  • Claude Sonnet 5$2
  • Grok 4.5$2

Output $/M tokens

lower is better

  • Claude Sonnet 5$10
  • Grok 4.5$6

Cost per solved task

needs a pass rate for both

  • Claude Sonnet 5missing
  • Grok 4.5$3.81
Claude Sonnet 5Grok 4.5
Input $/Mtok$2$2
Output $/Mtok$10$6
Cached input $/Mtok$0.2$0.3
Pass ratemissing64%
Pass rate sourcemissingAA
Cost basismissingmeasured
Cost per solved taskmissing$3.81

verified 2026-08-21 · heavy task tier; measured rows ignore the tier· Methodology· Claude Sonnet 5· Grok 4.5