GPT-5.5 Instant (June 2026) vs Muse Glimmer (High)
Which is better for the money: GPT-5.5 Instant (June 2026) by OpenAI or Muse Glimmer (High) by Meta? 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
GPT-5.5 Instant (June 2026) scores 8.5 points higher (26.0 vs 17.5) but costs 8.1× as much to run the benchmark ($1184 vs $146; premium vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 Instant (June 2026) when you need intelligence above 17.5, and Muse Glimmer (High) when 17.5 is enough.
| Metric | GPT-5.5 Instant (June 2026) | Muse Glimmer (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 26.0 | 17.5 | −32.7% Muse Glimmer (High) is 32.7% less intelligent |
| Total AA cost (lower is better) | $1,184.34 | $145.77 | −87.7% Muse Glimmer (High) is 87.7% cheaper |
| End-to-end time (lower is better) | 16.68s | 24.87s | +49.1% Muse Glimmer (High) is 49.1% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
Muse Glimmer (High) vs GPT-5.5 Instant (June 2026): 32.7% less intelligence, 87.7% less cost to run the AA benchmark, and 49.1% 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.
- Muse Glimmer (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
GPT-5.5 Instant (June 2026)Muse Glimmer (High)Today'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-instant-06-26/muse-glimmer · Markdown: /api/v1/compare/gpt-5-5-instant-06-26/muse-glimmer?format=md · llms.txt · agent skill