Moonshot · released Jul 16, 2026
Kimi K3
Kimi K3 is Moonshot's July open-weight model, and Kimi K3.1 Pro has replaced it as the newest Kimi.
Open weights4 months oldThinks before answering
- Input price
- $3 / M
- Output price
- $15 / M
- Context
- 1M tokens
- Longest reply
- 1M
- Reads
- text, image, video
- Knows up to
- –
Where it shines
- It scores 1497 on hard English prompts.
- Its weights are open to download.
Where it struggles
- It costs $3 in, $15 out, more than K3.1 Pro.
Where you can use it
- Hugging FaceDownloadWeights are public.
- Moonshot APIAPI$3 in / $15 out per million tokens.
- OpenRouterAPIListed as
moonshotai/kimi-k3
How it scores on each job
Scores run 0 to 100 and blend every measure we have for that job. The number after the dot is its rank among the 33 models in the lineup.
The evidence
| Measure | Score | Rank in lineup | Source |
|---|---|---|---|
| Epoch Capabilities Index | 158 | #12 | Epoch AI |
| LMArena text | 1475 | #11 | LMArena |
| LMArena hard prompts | 1495 | #10 | LMArena |
| LMArena instruction following | 1485 | #9 | LMArena |
| LMArena multi-turn | 1489 | #7 | LMArena |
| LMArena creative writing | 1456 | #13 | LMArena |
| LMArena writing & language | 1470 | #10 | LMArena |
| LMArena coding | 1508 | #8 | LMArena |
| LMArena math | 1493 | #12 | LMArena |
| LMArena business & finance | 1469 | #11 | LMArena |
| LMArena legal & government | 1502 | #5 | LMArena |
| LMArena medicine | 1488 | #10 | LMArena |
| WebDev Arena | 1656 | #11 | LMArena |
| Agent Arena | #22 | #12 | LMArena |
| GPQA Diamond | 93% | #13 | Epoch AI |
| FrontierMath | 72% | #15 | Epoch AI |
| SimpleQA Verified | 51% | #13 | Epoch AI |
| ARC-AGI-2 | 60% | #19 | Epoch AI |
Compare it with these
8 months old
OpenAI
GPT-5.4
GPT-5.4 is an older OpenAI model that the GPT-6 family has passed.
Images & screenshots
- Price
- $2.5 in · $15 out
- Context
- 1.1M
3 months old
Alibaba
Qwen3.8 Max
Qwen3.8 Max is Alibaba's flagship and gives solid all-round answers at a low output price.
Websites & appsProfessional work
- Price
- $2 in · $6 out
- Context
- 1M
3 months old
Gemini 3.7 Flash
Gemini 3.7 Flash is a cheap, capable Google model that Gemini 3.8 Flash has replaced.
WritingEveryday questions
- Price
- $0.75 in · $3.75 out
- Context
- 1M