GPT-6.1 Terra (Xhigh) vs Inkling Small
Which is better for the money: GPT-6.1 Terra (Xhigh) by OpenAI or Inkling Small by Thinking Machines? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
GPT-6.1 Terra (Xhigh) scores 19.7 points higher (45.4 vs 25.7) but costs 1.5× as much to run the benchmark ($365 vs $241; both mid-range class). Pick GPT-6.1 Terra (Xhigh) when the extra intelligence is worth the premium, otherwise Inkling Small.
| Metric | GPT-6.1 Terra (Xhigh) | Inkling Small | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 45.4 | 25.7 | −43.4% Inkling Small is 43.4% less intelligent |
| Total AA cost (lower is better) | $364.95 | $240.85 | −34.0% Inkling Small is 34.0% cheaper |
| End-to-end time (lower is better) | 18.82s | 12.75s | −32.3% Inkling Small is 32.3% faster |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text, Image, Speech |
Inkling Small vs GPT-6.1 Terra (Xhigh): 43.4% less intelligence, 34.0% less cost to run the AA benchmark, and 32.3% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
- Inkling Small is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
GPT-6.1 Terra (Xhigh)Inkling SmallToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
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