Comparing 2 models

Claude Opus 4.5 vs Grok 4.5

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

metric
Model 1Claude Opus 4.5
Model 2Grok 4.5
Best for
Agentic Coding (#1)
Best Cheap LLM for High Volume (#3)
Provider
anthropic
x-ai
Context
200K
500KBest
Input / 1M
$5
$2Best
Output / 1M
$25
$6Best
Tool use
yesBest
yesBest
Vision
yesBest
yesBest
Reasoning
yesBest
yesBest
Open-weight
Released
Nov 1, 2025
Jul 7, 2026