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kimi-k2-thinking

Kimi K2 Thinking

Chain-of-thought — think while using tools, complex reasoning & tool calls

ParametersNot publicly disclosedContext WindowNot publicly disclosedKnowledge CutoffNot publicly disclosed

Overview

Kimi K2 Thinking is a chain-of-thought model that reasons while invoking tools, supporting complex inference and tool calls with reduced need for human intervention during multi-step runs.

It fits research assistants, automated analysis pipelines, and agent flows where thinking and tool use must alternate continuously until the task completes.

Kimi K2 Thinking shows that intertwined reasoning and tool use can be delivered at practical cost, supporting the view that relatively low-cost models can still achieve high performance on complex autonomous workflows.

Use Cases

Logical ReasoningData AnalysisCode Programming