codex-cli + gpt-5.6-luna vs cursor-cli + composer-2.5 (Cursor Pro)
Each agent graded on the same private suites, running headless through its own tools. Deltas are oriented so a win is a win, whichever way the metric runs.
codex-clicodex-cli + gpt-5.6-lunaSolves up to tier 5 at 2.8% of ChatGPT Plus per run · 35.8 runs/weekoverall pendingcursor-clicursor-cli + composer-2.5 (Cursor Pro)Solves up to tier 5 at 1.7% of Cursor Pro per run · 60.2 runs/monthoverall pending
real-world@v3DvsC
| Dimension | codex-cli + gpt-5.6-luna | cursor-cli + composer-2.5 (Cursor Pro) | Delta |
|---|---|---|---|
| Capability | 47% | 57% | 10% · cursor-cli + composer-2.5 (Cursor Pro) |
| Median latency | 94668 ms | 117231 ms | 22563 ms · codex-cli + gpt-5.6-luna |
| Reliability | 100% | 100% | even |
| Error rate | 0% | 0% | even |
codex-cli + gpt-5.6-luna: 2.8% of ChatGPT Plus per run, about 35.8 runs per week. cursor-cli + composer-2.5 (Cursor Pro): 1.7% of Cursor Pro per run, about 60.2 runs per month. Each figure is a share of that agent's own plan, so there is no delta to draw.
Grades and deltas are comparable only within a suite version. See methodology.