GPT-5.5 (Xhigh) vs Granite 4.2 8B
Which is better for the money: GPT-5.5 (Xhigh) by OpenAI or Granite 4.2 8B by IBM? 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
GPT-5.5 (Xhigh) scores 27.3 points higher (38.4 vs 11.1) but costs 100× as much to run the benchmark ($5294 vs $53.1; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (Xhigh) when you need intelligence above 11.1, and Granite 4.2 8B when 11.1 is enough.
| Metric | GPT-5.5 (Xhigh) | Granite 4.2 8B | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.4 | 11.1 | −71.1% Granite 4.2 8B is 71.1% less intelligent |
| Total AA cost (lower is better) | $5,294.36 | $53.07 | −99.0% Granite 4.2 8B is 99.0% cheaper |
| End-to-end time (lower is better) | 40.04s | 46.99s | +17.4% Granite 4.2 8B is 17.4% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $0.06 / $0.25 | |
| Input modalities | Text, Image | Text |
Granite 4.2 8B vs GPT-5.5 (Xhigh): 71.1% less intelligence, 99.0% less cost to run the AA benchmark, and 17.4% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- Granite 4.2 8B is off the frontier: at the same or lower cost, GPT-6 Luna (High) scores 32.90 for $47.9.
GPT-5.5 (Xhigh)Granite 4.2 8BToday's Pareto frontierOpen-weights 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/granite-4-2-8b · Markdown: /api/v1/compare/gpt-5-5/granite-4-2-8b?format=md · llms.txt · agent skill