xAIactive
Grok 4.20
Released at: May 5, 2026
API StatusAvailable for integration
Context Window2,000,000 tokens
Input Price / MTok$1.25
Output Price / MTok$2.50
Model Overview
xAI's flagship reasoning model with real-time X platform data integration. Exceptionally strong in physics, mathematics, and advanced code synthesis.
Vetted Benchmarks
mmluScore: 94.7% (Ranked top 6%)
humanevalScore: 97% (Ranked top 6%)
mathScore: 93.8% (Ranked top 11%)
gpqaScore: 84.9% (Ranked top 9%)
mt_benchScore: 9.7% (Ranked top 10%)
hellaswagScore: 98.8% (Ranked top 10%)
Input Price TrendLast 90 Days
Output Price TrendLast 90 Days
How does this model compare?
Evaluate benchmark standing and performance rankings vs all other tracked models.