Kimi K2vsQwen3
Kimi K2 | Qwen3 | |
|---|---|---|
| Specifications | ||
Parameters | 1T | 235B |
Context window | 128k | 128k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 10% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 65.8% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 75.1% | — |
| Overview | ||
| Company | Moonshot AI | Qwen |
| Release date | Jul 11 2025 | Apr 29 2025 |
| Access | Open Weight | Open Weight |
Which is better: Kimi K2 or Qwen3?
Kimi K2 and Qwen3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen3 shipped 73 days before Kimi K2, so benchmark comparisons should account for the intervening progress.
Kimi K2 has 1T parameters, while Qwen3 has 235B. Context windows are 128k (Kimi K2) vs 128k (Qwen3).
Direct benchmark comparisons are unavailable — Kimi K2 and Qwen3 don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi K2 was released by Moonshot AI on Jul 11 2025.
Qwen3 was released by Qwen on Apr 29 2025.
Kimi K2 has a 128k context window; Qwen3 has 128k.