# Kimi-K3.1-Pro is now open-weights

Digest AI · Generative AI & Models · published 2026-11-04T15:44:08Z

Canonical: https://digestai.news/story/kimi-k3-1-pro-is-now-open-weights

## Summary

Kimi has made its Kimi-K3.1-Pro model available with open weights, marking the first release in the Kimi-K3.1 series. The model is a 3-trillion-parameter, natively multimodal agentic system with a 1-million-token context window. It claims improvements in coding, 3D creation, financial research, and factual accuracy, along with enhanced agentic capabilities. Kimi-K3.1-Pro uses Gated DeepSeek Sparse Attention (Gated DSA) layers for more efficient long-context modeling, replacing the full-attention Gated MLA layers from its predecessor, Kimi-K3.

The model is now accessible via the Kimi platform API, with OpenAI/Anthropic-compatible endpoints. Benchmark results show strong performance across coding, science, and multimodal tasks, though comparisons rely on internal evaluations and third-party harnesses. Kimi-K3.1-Pro is recommended for use with specific inference engines and supports structured outputs, tool calls, and context caching. The model is released under the Kimi-K3.1-Pro License, and downloads have reached **797** in the past month.

## Key points

- Uses Gated DeepSeek Sparse Attention (Gated DSA) for efficient long-context processing, replacing full-attention layers from Kimi-K3
- Available via Kimi’s API with OpenAI/Anthropic compatibility; benchmark results show strong performance but rely on internal evaluations

## Why it matters

Kimi-K3.1-Pro’s open-weight release and multimodal agentic capabilities could accelerate research and practical applications in coding, design, and financial analysis.

## Sources

1. [Kimi-K3.1-Pro is now open-weights](https://huggingface.co/moonshotai/Kimi-K3.1-Pro) (huggingface.co, 2026-11-04, primary source)

## Cite

Digest AI, "Kimi-K3.1-Pro is now open-weights", 4 November 2026, https://digestai.news/story/kimi-k3-1-pro-is-now-open-weights

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