GLM-5.3 (Low) vs GPT-5.6 Sol (Xhigh)
Which is better for the money: GLM-5.3 (Low) by Z AI or GPT-5.6 Sol (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Sol (Xhigh) scores 9.7 points higher (44.0 vs 34.3) but costs 2.1× as much to run the benchmark ($2082 vs $1013; flagship vs premium cost classes). Pick GPT-5.6 Sol (Xhigh) when the extra intelligence is worth the premium, otherwise GLM-5.3 (Low).
| Metric | GLM-5.3 (Low) | GPT-5.6 Sol (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.3 | 44.0 | +28.3% GPT-5.6 Sol (Xhigh) is 28.3% more intelligent |
| Total AA cost (lower is better) | $1,012.50 | $2,082.28 | +105.7% GPT-5.6 Sol (Xhigh) is 2.1× more expensive |
| End-to-end time (lower is better) | 30.92s | 47.67s | +54.2% GPT-5.6 Sol (Xhigh) is 54.2% slower |
| Price per 1M tokens (in / out) | $1.40 / $4.40 | $4.00 / $20.0 | |
| Input modalities | Text | Text, Image |
GPT-5.6 Sol (Xhigh) vs GLM-5.3 (Low): 28.3% more intelligence, 105.7% more cost to run the AA benchmark, and 54.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GLM-5.3 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- GPT-5.6 Sol (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GLM-5.3 (Low)GPT-5.6 Sol (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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