AI Hub
← All models

Claude 3.5 Sonnet 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 70.3)
  • Grok 4.20 0309 v2 is cheaper ($2.00 vs $3.00 per 1M input)
  • Grok 4.20 0309 v2 is faster
Claude 3.5 SonnetGrok 4.20 0309 v2
Intelligence index70.391.1
DeveloperAnthropicxAI
TypeLLMLLM
AccessAPI only
Context window200,000 tokens
Input price$3.00 / 1M$2.00 / 1M
Output price$15.00 / 1M$6.00 / 1M
Speed101 tok/s105 tok/s
ReleasedJune 20, 2024April 7, 2026
Parameters
Input modalitiesText, Image
Output modalitiesText

Shared benchmarks

Claude 3.5 Sonnet
Grok 4.20 0309 v2
GPQA Diamond
67.2
91.1
Humanity’s Last Exam
3.9
32.2