# Kimi K3.1 Pro Is Open-Weight, But What Does It Really Cost to Run?

Source: [DEV Community: ai](https://dev.to/iwanaradoewic/kimi-k31-pro-is-open-weight-but-what-does-it-really-cost-to-run-1cjo) · 2026-11-11 · AI
Page: https://themorning.dev/story/kimi-k3-1-pro-is-open-weight-but-what-does-it-really-cost-to-run-421f98da4aaf7c8e
Kind: release · Impact: medium

## In brief

- Moonshot AI has released the open weights for Kimi K3.1 Pro.
- The model is a Mixture-of-Experts design with 2.8 trillion total parameters.
- It offers a context window of over one million tokens.

## Why it matters

The weights are openly available, but the source questions what it realistically costs developers to run a model of this size.

## Versions

- Kimi K3.1 Pro

## Timeline

- 2026-11-11: DEV Community article examines the running costs of the open-weight model

## Coverage

- [Kimi K3.1 Pro Is Open-Weight, But What Does It Really Cost to Run?](https://dev.to/iwanaradoewic/kimi-k31-pro-is-open-weight-but-what-does-it-really-cost-to-run-1cjo) — DEV Community: ai, 2026-11-11

Tags: open-weights, llm, mixture-of-experts, kimi, inference-cost

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev