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Kimi K3.1 Pro Release: Long Tasks, Access and Plans for Open Weights

Kimi introduced the K3.1 Pro and Highspeed versions on October 24, announced the million token context and programming, three-dimensional creation and other directions, and announced that the model weight plan will be open before November 4. This article distinguishes between product availability, interface access and local deployment, and discusses how the OPC team uses its own long task samples to check the effect and investment.

Chinese edition published 26 Oct 2026 · 阅读中文原文 ↗

Source timingSource date: 2026-10-24; data verification: October 26, 2026.

According to Kimi's official research blog, K3.1 Pro supports millions of token contexts, provides standard and Highspeed versions, and can be used through Kimi products and APIs. The official also stated that the complete weight will be released before November 4th. Therefore, as of this check, it cannot be written that a complete local deployment package is already available based on the description of the "open weight model".

Select the usage method first, then compare the models

Kimi Code official documentation lists model selection and thinking mode requirements. The model ID in the code tool, the API-oriented model ID and the product page display name should be checked according to their respective documents. Similar names cannot be regarded as identical access methods. When starting a new project, you should also confirm whether the purchased plan covers product usage rights or independent API usage.

For a small team, it is easier to judge the selection by determining the purpose first: modifying existing projects, organizing large data packages, and producing interactive demonstrations have different requirements for tool permissions, output forms, and manual review. The capabilities already provided by the product interface do not mean that the same operation can be completed directly through an API call.

Long context requires a checkable task structure

The following are ChinaOPC’s verification recommendations. Choose a familiar historical task and prepare clear input, scope of allowed modifications, and acceptance methods. Let the model first explain the missing data and then perform a checkable work, such as repairing a module and running the corresponding check, instead of submitting the entire set of customer data at once and just waiting for the final answer.

Context capacity describes the range of information that can be accommodated, and does not guarantee that every detail is correctly understood. You can put version conflicts, extraneous material, and conditions that need clarification into the sample to see how the model handles it. The evaluation results should also include omissions, error corrections, and manual correction time.

Highspeed and weighted plans both return to actual costs

Highspeed is officially described as a faster version; the actual time-consuming and expenses under different workloads still need to be recorded in their own operating conditions. When comparing, the model version, thinking settings, number of retries, output length, and manual review investment should be retained at the same time. The cost of the entire service cannot be calculated using only one response time.

If you plan to self-deploy, you should wait until weightings, licensing and operational requirements are actually announced before reconfirming. The public release plan does not mean that device adaptation has been verified; model updates should not directly cover the version currently working for customers, and can be compared on the same sample before deciding to switch.

This article does not reproduce the results of the official list, nor does it cite its ranking as a guarantee of operating results. Regarding handing over the generated results to customers for use, you can refer to Interactive Demonstration Data and Fallback Check to separately evaluate the model capabilities and the work required for complete delivery.

Sources and editorial notes

AI-assisted editing and writing, checked against listed public sources. The ChinaOPC analysis and simulated scenarios in the text were written independently, and no interviews, customer test orders, financial audits or actual model testing were conducted; official information is subject to the original source text. English translation of the Chinese edition, prepared with machine assistance and editorial checks. Source verification dates refer to the original Chinese research.

Source titles and publisher names are retained in their original language. Refer to the linked originals for official documents and current requirements.

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