GPT-6.1 Terra (Medium) vs Inkling (Xhigh)
Which is better for the money: GPT-6.1 Terra (Medium) by OpenAI or Inkling (Xhigh) by Thinking Machines? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-28.
Clear winner
Verdict
Pick GPT-6.1 Terra (Medium)
Inkling (Xhigh) vs GPT-6.1 Terra (Medium): 67.2% less intelligence, 549.6% more cost to run the AA benchmark, and 73.5% slower end-to-end.
| Metric | GPT-6.1 Terra (Medium) | Inkling (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.1 | 12.5 | −67.2% Inkling (Xhigh) is 67.2% less intelligent |
| Total AA cost (lower is better) | $190.36 | $1,236.66 | +549.6% Inkling (Xhigh) is 6.5× more expensive |
| End-to-end time (lower is better) | 7.61s | 13.20s | +73.5% Inkling (Xhigh) is 73.5% slower |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $1.00 / $4.05 | |
| Input modalities | Text, Image | Text, Image, Speech |
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (Medium) is on today's frontier: nothing is both smarter and cheaper.
- Inkling (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 54.50 for $1124.
GPT-6.1 Terra (Medium)Inkling (Xhigh)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-6-1-terra-medium/inkling · Markdown: /api/v1/compare/gpt-6-1-terra-medium/inkling?format=md · llms.txt · agent skill