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SOLVENCY

Head to head

Claude Haiku 4.5 vs GPT-4.1

Claude Haiku 4.5: currentGPT-4.1: legacyheavy 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 Haiku 4.5$1
  • GPT-4.1$2

Output $/M tokens

lower is better

  • Claude Haiku 4.5$5
  • GPT-4.1$8

Cost per solved task

needs a pass rate for both

  • Claude Haiku 4.5missing
  • GPT-4.1$5.15
Claude Haiku 4.5GPT-4.1
Input $/Mtok$1$2
Output $/Mtok$5$8
Cached input $/Mtok$0.1$0.5
Pass ratemissing52%
Pass rate sourcemissingAider
Cost basismissingmodelled
Cost per solved taskmissing$5.15

verified 2026-08-21 · heavy task tier; measured rows ignore the tier· Methodology· Claude Haiku 4.5· GPT-4.1