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Claude 3.5 Haiku vs Grok 4.20 0309

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

  • Grok 4.20 0309 has the higher intelligence index (88.5 vs 54.5)
  • Claude 3.5 Haiku is cheaper ($0.80 vs $2.00 per 1M input)
  • Claude 3.5 Haiku is faster
Claude 3.5 HaikuGrok 4.20 0309
Intelligence index54.588.5
DeveloperAnthropicxAI
TypeLLMLLM
AccessAPI only
Context window200,000 tokens
Input price$0.80 / 1M$2.00 / 1M
Output price$4.00 / 1M$6.00 / 1M
Speed104 tok/s97 tok/s
ReleasedNovember 4, 2024March 10, 2026
Parameters
Input modalitiesText, Image
Output modalitiesText

Shared benchmarks

Claude 3.5 Haiku
Grok 4.20 0309
GPQA Diamond
41.6
88.5
Humanity’s Last Exam
3.5
30