Claude Opus 5 vs Kimi K3
Kimi K3 leads in 3 of 8 categories
Arena ELO
Kimi K3
Cheaper
Kimi K3
Faster
Tie
Detailed Comparison
| Category | Claude Opus 5 | Kimi K3 |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Context Window | 200K WIN | 128K |
| Input Price ($/1M) | $15 | $0.6 WIN |
| Output Price ($/1M) | $75 | $2.5 WIN |
| Arena ELO | N/A | 1679 WIN |
| 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, Claude Opus 5 or Kimi K3?
Kimi K3 is approximately 97% cheaper than Claude Opus 5 per million tokens.
Which has a larger context window?
Claude Opus 5 supports 200K context, while Kimi K3 supports 128K.
Is Claude Opus 5 or Kimi K3 open source?
Claude Opus 5 is proprietary. Kimi K3 is open source.
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