GPT-5.5 Instant (May 2026) vs GPT-5.6 Luna (Medium)
GPT-5.5 Instant (May 2026) vs GPT-5.6 Luna (Medium). 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-5.5 Instant (May 2026) | GPT-5.6 Luna (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 22.7 | 25.0 | +10.1% GPT-5.6 Luna (Medium) is 10.1% more intelligent |
| Total AA cost (lower is better) | Not reported | $44.32 | — not comparable |
| End-to-end time (lower is better) | Not reported | 6.65s | — not comparable |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-5-instant-05-26/gpt-5-6-luna-medium · Markdown: /api/v1/compare/gpt-5-5-instant-05-26/gpt-5-6-luna-medium?format=md · llms.txt · agent skill