gpt-5.6-sol vs composer-2.5
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 | gpt-5.6-sol | composer-2.5 | Advantage |
|---|---|---|---|
| Capability | 60% | 57% | +3% (gpt-5.6-sol leads) |
| Median task time | 2m 28s | 1m 30s | 58s faster (composer-2.5 leads) |
| Approx. task cost | $0.011 / task | $0.023 / task | $0.013 / task lower (gpt-5.6-sol leads) |
gpt-5.6-sol: 3.5% of ChatGPT Plus (3.5% / 1w) per run. composer-2.5: 1.8% of Cursor Pro (1.8% / 1m) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | gpt-5.6-sol | composer-2.5 | Advantage |
|---|---|---|---|
| Capability | 67% | 51% | +16% (gpt-5.6-sol leads) |
| Median task time | 4m 11s | 4m 30s | 19s faster (gpt-5.6-sol leads) |
| Approx. task cost | $0.010 / task | $0.029 / task | $0.019 / task lower (gpt-5.6-sol leads) |
gpt-5.6-sol: 0.9% of ChatGPT Plus (0.9% / 1w) per run. composer-2.5: 0.6% of Cursor Pro (0.6% / 1m) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | gpt-5.6-sol | composer-2.5 | Advantage |
|---|---|---|---|
| Capability | 56% | 37% | +19% (gpt-5.6-sol leads) |
| Median task time | 3m 43s | 1m 51s | 1m 52s faster (composer-2.5 leads) |
| Approx. task cost | $0.011 / task | $0.024 / task | $0.013 / task lower (gpt-5.6-sol leads) |
gpt-5.6-sol: 0.2% of ChatGPT Plus (0.2% / 1w) per good solve. composer-2.5: 0.1% of Cursor Pro (0.1% / 1m) 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, gpt-5.6-sol or composer-2.5?
gpt-5.6-sol 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 2026-08-17.
How much do gpt-5.6-sol and composer-2.5 cost?
gpt-5.6-sol runs on ChatGPT Plus at $20/month (public price as of 2026-07-20). composer-2.5 runs on Cursor Pro at $20/month (public price as of 2026-07-20).