GPT-6 Astra (Medium) vs Kimi K3 (Low)
Which is better for the money: GPT-6 Astra (Medium) by OpenAI or Kimi K3 (Low) by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (Medium) scores 19.5 points higher (49.6 vs 30.1) but costs 2.0× as much to run the benchmark ($2434 vs $1190; flagship vs premium cost classes). Pick GPT-6 Astra (Medium) when the extra intelligence is worth the premium, otherwise Kimi K3 (Low).
| Metric | GPT-6 Astra (Medium) | Kimi K3 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 49.6 | 30.1 | −39.3% Kimi K3 (Low) is 39.3% less intelligent |
| Total AA cost (lower is better) | $2,434.12 | $1,190.42 | −51.1% Kimi K3 (Low) is 51.1% cheaper |
| End-to-end time (lower is better) | 14.07s | 56.42s | +301.0% Kimi K3 (Low) is 301.0% slower |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $3.00 / $15.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3 (Low) vs GPT-6 Astra (Medium): 39.3% less intelligence, 51.1% less cost to run the AA benchmark, and 301.0% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (Medium) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- Kimi K3 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-6 Astra (Medium)Kimi K3 (Low)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-astra-medium/kimi-k3-low · Markdown: /api/v1/compare/gpt-6-astra-medium/kimi-k3-low?format=md · llms.txt · agent skill