GPT-5.5 Instant (June 2026) vs Grok 4.7 (Xhigh)
Which is better for the money: GPT-5.5 Instant (June 2026) by OpenAI or Grok 4.7 (Xhigh) by SpaceXAI? 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
Grok 4.7 (Xhigh) scores 20.4 points higher (46.4 vs 26.0) but costs 4.5× as much to run the benchmark ($4438 vs $987; flagship vs premium cost classes). They are not alternatives at one budget: pick Grok 4.7 (Xhigh) when you need intelligence above 26.0, and GPT-5.5 Instant (June 2026) when 26.0 is enough.
| Metric | GPT-5.5 Instant (June 2026) | Grok 4.7 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 26.0 | 46.4 | +78.5% Grok 4.7 (Xhigh) is 78.5% more intelligent |
| Total AA cost (lower is better) | $986.85 | $4,438.03 | +349.7% Grok 4.7 (Xhigh) is 4.5× more expensive |
| End-to-end time (lower is better) | 16.68s | 81.64s | +389.4% Grok 4.7 (Xhigh) is 389.4% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.7 (Xhigh) vs GPT-5.5 Instant (June 2026): 78.5% more intelligence, 349.7% more cost to run the AA benchmark, and 389.4% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 Instant (June 2026) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- Grok 4.7 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
GPT-5.5 Instant (June 2026)Grok 4.7 (Xhigh)Today's Pareto frontierEvery other model
Matchup
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