GPT-5.5 Instant (June 2026) vs Grok 4.6 (High)
Which is better for the money: GPT-5.5 Instant (June 2026) by OpenAI or Grok 4.6 (High) 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 4.6 (High) scores 18.3 points higher (44.3 vs 26.0) but costs 1.7× as much to run the benchmark ($1963 vs $1184; both premium class). Pick Grok 4.6 (High) when the extra intelligence is worth the premium, otherwise GPT-5.5 Instant (June 2026).
| Metric | GPT-5.5 Instant (June 2026) | Grok 4.6 (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 26.0 | 44.3 | +70.4% Grok 4.6 (High) is 70.4% more intelligent |
| Total AA cost (lower is better) | $1,184.34 | $1,962.90 | +65.7% Grok 4.6 (High) is 65.7% more expensive |
| End-to-end time (lower is better) | 16.68s | 37.09s | +122.4% Grok 4.6 (High) is 122.4% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.6 (High) vs GPT-5.5 Instant (June 2026): 70.4% more intelligence, 65.7% more cost to run the AA benchmark, and 122.4% 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 (Max) scores 51.80 for $1082.
- Grok 4.6 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.5 Instant (June 2026)Grok 4.6 (High)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-5-instant-06-26/grok-4-6 · Markdown: /api/v1/compare/gpt-5-5-instant-06-26/grok-4-6?format=md · llms.txt · agent skill