Codex CLI vs Gemini 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 June 24, 2026 UTC
Token footprint summary
1.03× spread
Codex CLI loads 245 more default tokens than Gemini CLI.
Default tokens
o200k_base · latest request
8,710
8,465
+245
1.03×
Tools
11
8
+3
1.38×
Skills
5
2
+3
2.50×
Sub-agents
0
3
-3
—
Comparisons use each agent's latest captured hibench run. See methodology for capture details.
Token footprint summary
1.02× spread
Gemini CLI loads 283 more default tokens than Codex CLI.
Default tokens
claude-opus-4-8 · total-only
13,506
13,789
-283
1.02×
Tools
11
8
+3
1.38×
Skills
5
2
+3
2.50×
Sub-agents
0
3
-3
—
Comparisons use each agent's latest captured hibench run. See methodology for capture details.