GPT-5.6 Sol (Low) vs Grok 4.5 (High)
Which is better for the money: GPT-5.6 Sol (Low) by OpenAI or Grok 4.5 (High) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Grok 4.5 (High) scores 5.3 points higher (38.8 vs 33.5) but costs 2.0× as much to run the benchmark ($1244 vs $637; both premium class). Pick Grok 4.5 (High) when the extra intelligence is worth the premium, otherwise GPT-5.6 Sol (Low).
| Metric | GPT-5.6 Sol (Low) | Grok 4.5 (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 33.5 | 38.8 | +15.8% Grok 4.5 (High) is 15.8% more intelligent |
| Total AA cost (lower is better) | $637.28 | $1,243.85 | +95.2% Grok 4.5 (High) is 95.2% more expensive |
| End-to-end time (lower is better) | 8.26s | 20.23s | +144.9% Grok 4.5 (High) is 144.9% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.5 (High) vs GPT-5.6 Sol (Low): 15.8% more intelligence, 95.2% more cost to run the AA benchmark, and 144.9% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
- Grok 4.5 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.6 Sol (Low)Grok 4.5 (High)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-sol-low/grok-4-5 · Markdown: /api/v1/compare/gpt-5-6-sol-low/grok-4-5?format=md · llms.txt · agent skill