Comparing 2 models

Claude Opus 4.8 vs Grok 4.6

Facts first, then task-specific rankings. A highlighted cell is better only for that row, not universally.

metric
Model 1Claude Opus 4.8
Model 2Grok 4.6
Best for
Autonomous Agents (#3)
Document Summarization (#1)
Provider
anthropic
x-ai
Context
1MBest
500K
Input / 1M
$5
$2Best
Output / 1M
$25
$6Best
Tool use
yesBest
yesBest
Vision
yesBest
yesBest
Reasoning
yesBest
yesBest
Open-weight
Released
Aug 26, 2025
Aug 10, 2026