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ERNIE 4.5 21B A3B vs Grok 4.3

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

  • ERNIE 4.5 21B A3B is cheaper ($0.07 vs $1.25 per 1M input)
  • Grok 4.3 has a larger context window (1M)
ERNIE 4.5 21B A3BGrok 4.3
Intelligence index90.1
DeveloperBaiduxAI
TypeLLMLLM
AccessOpen weightsAPI only
Context window131,072 tokens1,000,000 tokens
Input price$0.07 / 1M$1.25 / 1M
Output price$0.28 / 1M$2.50 / 1M
Speed88 tok/s
ReleasedAugust 12, 2025May 6, 2026
Parameters
Input modalitiesTextText, Image
Output modalitiesTextText