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Cogito v2.1 vs Grok 4.20 0309 v2

Deep Cogito vs xAI — benchmarks, pricing, and capabilities side by side.

  • Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 75.8)
  • Cogito v2.1 is cheaper ($1.30 vs $2.00 per 1M input)
  • Grok 4.20 0309 v2 is faster
Cogito v2.1Grok 4.20 0309 v2
Intelligence index75.891.1
DeveloperDeep CogitoxAI
TypeLLMLLM
Access
Context window
Input price$1.30 / 1M$2.00 / 1M
Output price$1.30 / 1M$6.00 / 1M
Speed56 tok/s105 tok/s
ReleasedNovember 18, 2025April 7, 2026
Parameters
Input modalities
Output modalities

Shared benchmarks

Cogito v2.1
Grok 4.20 0309 v2
GPQA Diamond
76.8
91.1
Humanity’s Last Exam
11
32.2