GPT-6.1 Terra (Low) vs Mercury 2
Which is better for the money: GPT-6.1 Terra (Low) by OpenAI or Mercury 2 by Inception? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Clear winner
Verdict
Pick GPT-6.1 Terra (Low)
Mercury 2 vs GPT-6.1 Terra (Low): 70.2% less intelligence, 52.4% more cost to run the AA benchmark, and 3.5% faster end-to-end.
| Metric | GPT-6.1 Terra (Low) | Mercury 2 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 36.2 | 10.8 | −70.2% Mercury 2 is 70.2% less intelligent |
| Total AA cost (lower is better) | $114.52 | $174.51 | +52.4% Mercury 2 is 52.4% more expensive |
| End-to-end time (lower is better) | 6.78s | 6.54s | −3.5% Mercury 2 is 3.5% faster |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $0.25 / $0.75 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (Low) is off the frontier: at the same or lower cost, MiMo-V2.6-Flash scores 37.90 for $110.
- Mercury 2 is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
GPT-6.1 Terra (Low)Mercury 2Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-1-terra-low/mercury-2 · Markdown: /api/v1/compare/gpt-6-1-terra-low/mercury-2?format=md · llms.txt · agent skill