GPT-5.6 Terra (Low) vs Kimi K3.1 Pro
Which is better for the money: GPT-5.6 Terra (Low) by OpenAI or Kimi K3.1 Pro by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Kimi K3.1 Pro scores 27.6 points higher (55.1 vs 27.5) but costs 8.9× as much to run the benchmark ($3117 vs $350; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Kimi K3.1 Pro when you need intelligence above 27.5, and GPT-5.6 Terra (Low) when 27.5 is enough.
| Metric | GPT-5.6 Terra (Low) | Kimi K3.1 Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 27.5 | 55.1 | +100.4% Kimi K3.1 Pro is 2.0× more intelligent |
| Total AA cost (lower is better) | $350.36 | $3,117.31 | +789.7% Kimi K3.1 Pro is 8.9× more expensive |
| End-to-end time (lower is better) | 5.91s | 55.12s | +832.7% Kimi K3.1 Pro is 832.7% slower |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3.1 Pro vs GPT-5.6 Terra (Low): 100.4% more intelligence, 789.7% more cost to run the AA benchmark, and 832.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Low) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- Kimi K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Terra (Low)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-5-6-terra-low/kimi-k3-1-pro · Markdown: /api/v1/compare/gpt-5-6-terra-low/kimi-k3-1-pro?format=md · llms.txt · agent skill