GPT-5.6 Luna vs Kimi K3
Kimi K3 leads in 2 of 8 categories
Arena ELO
Tie
Cheaper
Kimi K3
Faster
Tie
Detailed Comparison
| Category | GPT-5.6 Luna | Kimi K3 |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Context Window | 128K | 128K |
| Input Price ($/1M) | $10 | $0.6 WIN |
| Output Price ($/1M) | $30 | $2.5 WIN |
| Arena ELO | N/A | N/A |
| Coding | N/A | N/A |
| Reasoning | N/A | N/A |
| Speed (tokens/sec) | N/A | N/A |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, GPT-5.6 Luna or Kimi K3?
Kimi K3 is approximately 92% cheaper than GPT-5.6 Luna per million tokens.
Which has a larger context window?
GPT-5.6 Luna supports 128K context, while Kimi K3 supports 128K.
Is GPT-5.6 Luna or Kimi K3 open source?
GPT-5.6 Luna is proprietary. Kimi K3 is open source.
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