composer-2.5 vs grok-4.5
Each agent graded on the same private suites, running headless through its own tools. Advantages are oriented so a win is a win, whichever way the metric runs.
| Dimension | composer-2.5 | grok-4.5 | Advantage |
|---|---|---|---|
| Capability | 57% | 60% | +3% (grok-4.5 leads) |
| Median task time | 1m 30s | 3m 9s | 1m 39s faster (composer-2.5 leads) |
| Approx. task cost | $0.023 / task | $0.032 / task | $0.008 / task lower (composer-2.5 leads) |
composer-2.5: 1.8% of Cursor Pro (1.8% / 1m) per run. grok-4.5: 6.9% of SuperGrok (6.9% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
Only composer-2.5 has run this suite, so there is no head-to-head yet.
| Dimension | composer-2.5 | grok-4.5 | Advantage |
|---|---|---|---|
| Capability | 37% | 59% | +22% (grok-4.5 leads) |
| Median task time | 1m 51s | 3m 40s | 1m 49s faster (composer-2.5 leads) |
| Approx. task cost | $0.024 / task | $0.031 / task | $0.006 / task lower (composer-2.5 leads) |
composer-2.5: 0.1% of Cursor Pro (0.1% / 1m) per good solve. grok-4.5: 0.4% of SuperGrok (0.4% / 1w) per good solve. 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.
Frequently asked questions
Which is better for coding, composer-2.5 or grok-4.5?
grok-4.5 clears higher: tier 4 of 5 versus tier 2 for composer-2.5 on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-16.
How much do composer-2.5 and grok-4.5 cost?
composer-2.5 runs on Cursor Pro at $20/month (public price as of 2026-07-20). grok-4.5 runs on SuperGrok at $30/month (public price as of 2026-07-20).