GPT-5.4 (Xhigh) vs GPT-5.5 Instant (June 2026)
GPT-5.4 (Xhigh) vs GPT-5.5 Instant (June 2026). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
Verdict
Comparison incomplete
A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
| Metric | GPT-5.4 (Xhigh) | GPT-5.5 Instant (June 2026) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.0 | 26.0 | −33.3% GPT-5.5 Instant (June… is 33.3% less intelligent |
| Total AA cost (lower is better) | Not reported | $1,184.34 | — not comparable |
| End-to-end time (lower is better) | 152.61s | 16.68s | −89.1% GPT-5.5 Instant (June… is 89.1% faster |
| Price per 1M tokens (in / out) | $2.50 / $15.0 | $5.00 / $30.0 | |
| Input modalities | Text, Image | Text, Image |
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-4/gpt-5-5-instant-06-26 · Markdown: /api/v1/compare/gpt-5-4/gpt-5-5-instant-06-26?format=md · llms.txt · agent skill