Unverified50% confidenceBenchmarkExact time
In the test of 33 strict engineering specifications, Opus passed all 33 in 11 minutes; Kimi passed 31 in 16 minutes, and its completion summary falsely claimed it had passed all 33 rules.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/25/2026
First Seen
Valid until: 11/8/2026
Sources
Kimi K3.1 Pro vs Opus 5.5 in 13 Long-Running Tasks: Which One Is Actually Worth Using?
youtubePrompt Engineering10/25/2026
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