GLM-5.3-Flash vs GPT-6.1 Sol (Xhigh)
Which is better for the money: GLM-5.3-Flash by Z AI or GPT-6.1 Sol (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
GPT-6.1 Sol (Xhigh) scores 9.2 points higher (51.0 vs 41.8) but costs 2.2× as much to run the benchmark ($662 vs $306; premium vs mid-range cost classes). Pick GPT-6.1 Sol (Xhigh) when the extra intelligence is worth the premium, otherwise GLM-5.3-Flash.
| Metric | GLM-5.3-Flash | GPT-6.1 Sol (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 41.8 | 51.0 | +22.0% GPT-6.1 Sol (Xhigh) is 22.0% more intelligent |
| Total AA cost (lower is better) | $305.52 | $662.28 | +116.8% GPT-6.1 Sol (Xhigh) is 2.2× more expensive |
| End-to-end time (lower is better) | 39.33s | 86.31s | +119.5% GPT-6.1 Sol (Xhigh) is 119.5% slower |
| Price per 1M tokens (in / out) | $0.15 / $0.50 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6.1 Sol (Xhigh) vs GLM-5.3-Flash: 22.0% more intelligence, 116.8% more cost to run the AA benchmark, and 119.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GLM-5.3-Flash is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- GPT-6.1 Sol (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
GLM-5.3-FlashGPT-6.1 Sol (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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