Model comparison
Kimi K2 0905 vs o3
Capability radar, value bars, and side-by-side posture.
Kimi K2 0905
Not scored
value score
o3
93
value score
Kimi K2 0905 ctx
—
o3 ctx
200K
Capability radar
Value · context · multimodal · openness · speed posture
Value head-to-head
- o393
Attribute tape
| Field | Kimi K2 0905 | o3 |
|---|---|---|
| Developer | ~moonshotai | OpenAI |
| Context | — | 200K |
| Modalities | Text, Code | |
| Openness | — | Proprietary Model |
| Speed | — | — |
| Price | — | $10/1M in · $40/1M out |
| Value score | — | 93 |
| Summary | Kimi K2 0905 is an updated Mixture-of-Experts large language model from Moonshot AI with 1T total parameters and 32B active per forward pass, optimized for agentic coding, tool use, and long-context reasoning up to 256k tokens. It is available as an open-weight instruct model and via hosted API surfaces including OpenRouter. | OpenAI reasoning model focused on hard problems. |