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Granite 3.3 8B vs Grok 4.20 0309

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

  • Grok 4.20 0309 has the higher intelligence index (88.5 vs 32.5)
  • Granite 3.3 8B is cheaper ($0.00 vs $2.00 per 1M input)
  • Granite 3.3 8B is faster
Granite 3.3 8BGrok 4.20 0309
Intelligence index32.588.5
DeveloperIBMxAI
TypeLLMLLM
Access
Context window
Input price$0.00 / 1M$2.00 / 1M
Output price$0.30 / 1M$6.00 / 1M
Speed376 tok/s97 tok/s
ReleasedApril 16, 2025March 10, 2026
Parameters
Input modalities
Output modalities

Shared benchmarks

Granite 3.3 8B
Grok 4.20 0309
GPQA Diamond
33.8
88.5
Humanity’s Last Exam
4.2
30