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Kimi K2.8 Preview

Moonshot AIProprietaryPending Human Review

Kimi K2.8 Preview is Moonshot AI’s public coding-agent preview, rolled out to Kimi Code users on September 11. It improves coding and agent execution and reduces overthinking relative to K2.7 Code, with low, high, and max reasoning effort and a million-token context. Official model configuration confirms text, image, and video input. The existing kimi-for-coding alias now selects this distinct model rather than K2.7 Code. No public weights, parameter count, or detailed architecture are established; the membership API and supported coding clients provide access.

2026-09-11
Detailed architecture not publicly disclosed
Proprietary

Specifications

Architecture
Detailed architecture not publicly disclosed
License
Proprietary
Context Window
1,048,576 tokens
Type
multimodal
Modalities
textimagevideo

Benchmark Scores

Advanced Specifications

Model Family
Kimi
API Access
Available
Chat Interface
Not Available

Capabilities & Limitations

Capabilities
agentic codingreasoning effort controlsmultimodal inputlong-context development
Known Limitations
Kimi Code membership quotas and permissions govern access.The standard coding alias changed model identity; HighSpeed remains K2.7 Code.
Notable Use Cases
coding assistantssoftware engineering agentsrepository maintenance
Tool Use Support
Yes

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