Codex CLI vs Grok CLI
Side-by-side default footprint for the latest captured versions of both agents: request tokens, tool definitions, bundled skills, and sub-agent declarations.
Benchmark data last updated July 7, 2026 UTC
Token footprint summary
1.07× spread
Grok CLI loads 577 more default tokens than Codex CLI.
Default tokens
o200k_base · latest request
8,710
9,287
-577
1.07×
Codex CLI
Grok CLITools
11
24
-13
2.18×
Codex CLIGrok CLISkills
5
7
-2
1.40×
Codex CLIGrok CLISub-agents
0
3
-3
—
Codex CLIGrok CLIComparisons use each agent's latest captured hibench run. See methodology for capture details.
Token footprint summary
1.07× spread
Grok CLI loads 1,011 more default tokens than Codex CLI.
Default tokens
Anthropic claude-opus-4-8 · latest request
13,506
14,517
-1,011
1.07×
Codex CLIGrok CLITools
11
24
-13
2.18×
Codex CLIGrok CLISkills
5
7
-2
1.40×
Codex CLIGrok CLISub-agents
0
3
-3
—
Codex CLIGrok CLIComparisons use each agent's latest captured hibench run. See methodology for capture details.