Kimi K3 vs o3
o3 leads in 3 of 8 categories
Arena ELO
o3
Cheaper
Kimi K3
Faster
o3
Detailed Comparison
| Category | Kimi K3 | o3 |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Context Window | 128K | 200K WIN |
| Input Price ($/1M) | $0.6 WIN | $10 |
| Output Price ($/1M) | $2.5 WIN | $40 |
| Arena ELO | N/A | 1350 WIN |
| Coding | N/A | unknown |
| Reasoning | N/A | unknown |
| Speed (tokens/sec) | N/A | ~30 t/s WIN |
| Open Source | Yes | No |
Frequently Asked Questions
Which is cheaper, Kimi K3 or o3?
Kimi K3 is approximately 94% cheaper than o3 per million tokens.
Which is better for coding, Kimi K3 or o3?
Kimi K3 scores N/A on coding benchmarks, while o3 scores unknown.
Which has a larger context window?
Kimi K3 supports 128K context, while o3 supports 200K.
Is Kimi K3 or o3 open source?
Kimi K3 is open source. o3 is proprietary.
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