Agnes 2.5 Pro Theta vs GPT-6 Luna (Xhigh)
Which is better for the money: Agnes 2.5 Pro Theta by Sapiens AI or GPT-6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-11-09.
Trade-off
Verdict
Depends on your budget
Agnes 2.5 Pro Theta scores 0.5 points higher (24.0 vs 23.5) but costs 4.6× as much to run the benchmark ($397 vs $85.7; both mid-range class). They are not alternatives at one budget: pick Agnes 2.5 Pro Theta when you need intelligence above 23.5, and GPT-6 Luna (Xhigh) when 23.5 is enough.
| Metric | Agnes 2.5 Pro Theta | GPT-6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.0 | 23.5 | −2.1% GPT-6 Luna (Xhigh) is 2.1% less intelligent |
| Total AA cost (lower is better) | $396.84 | $85.74 | −78.4% GPT-6 Luna (Xhigh) is 78.4% cheaper |
| End-to-end time (lower is better) | 12.07s | 35.31s | +192.5% GPT-6 Luna (Xhigh) is 192.5% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.30 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Xhigh) vs Agnes 2.5 Pro Theta: 2.1% less intelligence, 78.4% less cost to run the AA benchmark, and 192.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Agnes 2.5 Pro Theta is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 46.30 for $389.
- GPT-6 Luna (Xhigh) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Medium) scores 24.60 for $72.7.
Agnes 2.5 Pro ThetaGPT-6 Luna (Xhigh)Today's Pareto frontierEvery other model
Matchup
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