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Claude Haiku 4.5 vs Grok 4.20 0309 v2

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

  • Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 75.3)
  • Claude Haiku 4.5 is cheaper ($1.00 vs $2.00 per 1M input)
  • Grok 4.20 0309 v2 is faster
Claude Haiku 4.5Grok 4.20 0309 v2
Intelligence index75.391.1
DeveloperAnthropicxAI
TypeLLMLLM
AccessAPI only
Context window200,000 tokens
Input price$1.00 / 1M$2.00 / 1M
Output price$5.00 / 1M$6.00 / 1M
Speed100 tok/s105 tok/s
ReleasedOctober 15, 2025April 7, 2026
Parameters
Input modalitiesText, Image
Output modalitiesText

Shared benchmarks

Claude Haiku 4.5
Grok 4.20 0309 v2
GPQA Diamond
73
91.1
Humanity’s Last Exam
9.7
32.2