GPT-6.1 Terra (Medium) vs Kimi K3.1 Pro
Which is better for the money: GPT-6.1 Terra (Medium) by OpenAI or Kimi K3.1 Pro by Kimi? 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
Kimi K3.1 Pro scores 13.8 points higher (55.1 vs 41.3) but costs 18× as much to run the benchmark ($3117 vs $175; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Kimi K3.1 Pro when you need intelligence above 41.3, and GPT-6.1 Terra (Medium) when 41.3 is enough.
| Metric | GPT-6.1 Terra (Medium) | Kimi K3.1 Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 41.3 | 55.1 | +33.4% Kimi K3.1 Pro is 33.4% more intelligent |
| Total AA cost (lower is better) | $175.20 | $3,117.31 | +1679.3% Kimi K3.1 Pro is 18× more expensive |
| End-to-end time (lower is better) | 6.95s | 63.28s | +810.5% Kimi K3.1 Pro is 810.5% slower |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3.1 Pro vs GPT-6.1 Terra (Medium): 33.4% more intelligence, 1679.3% more cost to run the AA benchmark, and 810.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (Medium) is on today's frontier: nothing is both smarter and cheaper.
- Kimi K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
GPT-6.1 Terra (Medium)Kimi K3.1 ProToday's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-1-terra-medium/kimi-k3-1-pro · Markdown: /api/v1/compare/gpt-6-1-terra-medium/kimi-k3-1-pro?format=md · llms.txt · agent skill