ModelBench

Model rankings

Agentic leaderboard

Ranked by one published agentic index version and evaluation harness at a time.

Version
Harness

Artificial Analysis Coding Agent IndexUnversionedCodex

Top models

Agentic ranking

Source - Codex How rankings work
agentic model ranking
Rank Model Creator Score Input / 1M Context Last verified
1 GPT-5.5 OpenAI 60.4 $5 1.05M Jul 30, 2026
2 GPT-5.4 OpenAI 53.6 $2.5 1.05M Jul 30, 2026