Release dates
— The Kimi Open Platform entered public beta with the Moonshot V1 series supporting up to 128K context. ↗
Moonshot V1
The first formal model series on the Kimi Open Platform, offered in 8K, 32K, and 128K context sizes and powering the Kimi assistant and API.
The Moonshot V1 API retired on 2026-08-31; 8K, 32K, and 128K are separate context tiers.
MODEL NUMBER031
- First public date
- 2024-01-31
- Organization
- Moonshot AI
- Family
- Kimi
01
Specifications
Only published specifications are shown.
This record covers multiple tiers. Modalities and capabilities describe the group coverage; support and licensing depend on the individual tier.
- Input modalities
- Text
- Open weights
- No
- Status
- Retired↗
- Retirement date
- 2026-08-31
moonshot-v1-8k · 8,000 tokensmoonshot-v1-32k · 32,000 tokensmoonshot-v1-128k · 128,000 tokens
02
Overview
Why it mattered
Moonshot V1 is the product-model starting point for Kimi; K1.5 was a later multimodal reasoning research line, not Kimi’s first version.
03
Architecture & capabilities
Model capabilities
Long contextTool use
API features
JSON mode
04
Release history
The Kimi Open Platform entered public beta with the Moonshot V1 series supporting up to 128K context.
View sourceThe Moonshot V1 API models were retired.
View source05
Related models
Select a card to view the related model.
06
Sources
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