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Claude Haiku 4.5 vs Grok 4.3

Anthropic vs xAI — benchmarks, pricing, and capabilities side by side.

  • Grok 4.3 has the higher intelligence index (90.1 vs 75.3)
  • Claude Haiku 4.5 is cheaper ($1.00 vs $1.25 per 1M input)
  • Claude Haiku 4.5 is faster
  • Grok 4.3 has a larger context window (1M)
Claude Haiku 4.5Grok 4.3
Intelligence index75.390.1
DeveloperAnthropicxAI
TypeLLMLLM
AccessAPI onlyAPI only
Context window200,000 tokens1,000,000 tokens
Input price$1.00 / 1M$1.25 / 1M
Output price$5.00 / 1M$2.50 / 1M
Speed100 tok/s88 tok/s
ReleasedOctober 15, 2025May 6, 2026
Parameters
Input modalitiesText, ImageText, Image
Output modalitiesTextText

Shared benchmarks

Claude Haiku 4.5
Grok 4.3
GPQA Diamond
73
90.1
Humanity’s Last Exam
9.7
35