Moonshot V1
Moonshot V1 is the product-model starting point for Kimi; K1.5 was a later multimodal reasoning research line, not Kimi’s first version.
FAMILY / MOONSHOT AI
Kimi
A family that grew from Moonshot V1’s long-context platform models and RL research into large open MoE and native visual agents.
- First model
- 2024
- Models
- 11
- Latest dated version
- Kimi K2.8 Preview
01 / RELEASE SEQUENCE
Family release sequence
- 2024-01-31Moonshot V1Language
- 2025-01-13Moonshot V1 Vision PreviewLanguage · Multimodal
- 2025-01-20Kimi K1.5Reasoning · Multimodal
- 2025-05-06Kimi Thinking PreviewReasoning
- 2025-07-11Kimi K2Language · Coding
- 2025-11-06Kimi K2 ThinkingReasoning · Coding
- 2026-01-27Kimi K2.5Reasoning · Coding
- 2026-04-20Kimi K2.6Reasoning · Coding
- 2026-06-12Kimi K2.7 CodeReasoning · Coding
- 2026-07-16Kimi K3Reasoning · Coding
- 2026-09-11Kimi K2.8 PreviewReasoning · Coding
02 / GENERATIONS
What changed
Moonshot V1 Vision Preview
The vision-preview branch of Moonshot V1, accepting images and recorded separately from the text-only V1 tiers.
Kimi K1.5
K1.5 combined long context with RL-based reasoning and provided a research base for later open Kimi agent models.
Kimi Thinking Preview
A thinking-model preview on the Kimi Open Platform: a distinct API model, not an alias of the K1.5 research model or K2 Thinking.
Kimi K2
K2 paired trillion-scale MoE with an open agent model and demonstrated large-scale training with the Muon optimizer.
Kimi K2 Thinking
A K2-based thinking agent trained to reason while using tools natively.
Kimi K2.5
A natively multimodal continuation of K2 with visual coding and an Agent Swarm of up to 100 subagents.
Kimi K2.6
The open successor to K2.5 with stronger long-horizon coding, general agents, vision, and Agent Swarm.
Kimi K2.7 Code
K2.7 Code moved Kimi’s open-agent line toward specialized long-horizon software engineering and became the direct predecessor to K2.8 Preview.
Kimi K3
K3 pushed open-model scale toward 3T parameters while unifying agent, vision, and long-context capabilities.
Kimi K2.8 Preview
K2.8 Preview upgrades Kimi Code’s default coding route with more efficient reasoning while preserving the existing Model ID, allowing the preview to replace kimi-for-coding without client changes.