Moonshot
LLM
Big
Open weights
Kimi K3.1 Pro
20 days since Moonshot announced it ·
Kimi K3.1 Pro is an open-weights LLM from Moonshot, announced 23 Oct 2026. It costs $2 per 1M input tokens and $10 per 1M output tokens. Its context window is 1M tokens. It has 2.8T parameters.
- Input
- $2
- per 1M tokens
- Cache write
- $2
- per 1M tokens
- Cache read
- $0.20
- per 1M tokens
- Output
- $10
- per 1M tokens
- Context window
- 1M
- tokens
- Parameters
- 2.8T
- total
- Announcement
- kimi.ai/blog/kimi-k3-1-pro
- Docs
- platform.kimi.ai/docs/guide/kimi-k3-1-pro-quickstart
- Our story
- Our story
Our coverage
2 storiesMoonshot · Big
open weightsA new one every ~87 days — due in ~67d.
- Kimi K3.1 Pro +99d
- Kimi K3 +87d
- Kimi K2.6 +83d
- Kimi K2.5 +82d
- Kimi K2 Thinking +58d
- Kimi K2-0905 +60d
- Kimi K2
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All modelsFacts last updated , from Moonshot’s own pages.