Kimi K2 vs o3
Kimi K2 leads in 4 of 8 categories
Arena ELO
Kimi K2
Cheaper
Kimi K2
Faster
Kimi K2
Detailed Comparison
| Category | Kimi K2 | o3 |
|---|---|---|
| Provider | Moonshot | OpenAI |
| Context Window | 128K | 200K WIN |
| Input Price ($/1M) | $0.55 WIN | $10 |
| Output Price ($/1M) | $2.2 WIN | $40 |
| Arena ELO | 1380 WIN | 1350 |
| Coding | 65.8% SWE-bench | unknown |
| Reasoning | 60.2% BrowseComp | unknown |
| Speed (tokens/sec) | ~50 t/s WIN | ~30 t/s |
| Open Source | Yes | No |
Frequently Asked Questions
Which is cheaper, Kimi K2 or o3?
Kimi K2 is approximately 95% cheaper than o3 per million tokens.
Which is better for coding, Kimi K2 or o3?
Kimi K2 scores 65.8% SWE-bench on coding benchmarks, while o3 scores unknown.
Which has a larger context window?
Kimi K2 supports 128K context, while o3 supports 200K.
Is Kimi K2 or o3 open source?
Kimi K2 is open source. o3 is proprietary.
Which ranks higher on the Chatbot Arena leaderboard?
Kimi K2 ranks higher with ELO 1380 vs 1350.
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