GPT-6 Sol (Xhigh) vs Step 5 Preview
Which is better for the money: GPT-6 Sol (Xhigh) by OpenAI or Step 5 Preview by StepFun? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-6 Sol (Xhigh)
Step 5 Preview vs GPT-6 Sol (Xhigh): 1.1% less intelligence, 39.3% more cost to run the AA benchmark, and 69.1% faster end-to-end.
| Metric | GPT-6 Sol (Xhigh) | Step 5 Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 44.2 | 43.7 | −1.1% Step 5 Preview is 1.1% less intelligent |
| Total AA cost (lower is better) | $854.60 | $1,190.26 | +39.3% Step 5 Preview is 39.3% more expensive |
| End-to-end time (lower is better) | 39.03s | 12.06s | −69.1% Step 5 Preview is 69.1% faster |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $1.00 / $2.70 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-6 Sol (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- Step 5 Preview is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-6 Sol (Xhigh)Step 5 PreviewToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-sol-xhigh/step-5 · Markdown: /api/v1/compare/gpt-6-sol-xhigh/step-5?format=md · llms.txt · agent skill