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Kimi K3.1 Leaks: Three Reasoning Levels, Million-Token Context, and Swarm Mode

Moonshot's Kimi K3.1: What the Leaks Reveal

Rumors are swirling that Moonshot AI is gearing up to release Kimi K3.1 next month, and if the leaked configuration files are anything to go by, it's shaping up to be a serious step up from its predecessor. The intel comes from a source on X (formerly Twitter) who goes by @MaxForAI, who dug through internal JSON/API responses and spotted model names like "k3d1-agent" along with hints of Agent mode, application scenarios, and a slew of configuration switches.

So, what's actually in store? Let's break it down.

Three Levels of Reasoning—Pick Your Brainpower

One of the standout features is the ability to choose your reasoning intensity. The leak points to three distinct levels: Low, High, and Max. Think of it like shifting gears in a car—you can cruise efficiently or push the engine to its limits depending on the task. Whether you're drafting a quick email or tackling a complex logic puzzle, K3.1 seems designed to adapt.

A Million Tokens? Yes, Please.

Context windows have been a hot topic, and K3.1 appears to be pushing the envelope with an "Extra Long" option that supports up to 1 million tokens. That's a massive leap for anyone who's ever tried to feed a model an entire book and gotten a blank stare in return. With this, long-form research, sprawling codebases, or multi-document analysis become far more feasible without constantly hitting a ceiling.

Agent Mode and Swarm: The Collaboration Angle

Beyond raw context, the leaks suggest K3.1 will come with Agent mode and something called Swarm multi-agent collaboration. If that sounds like a hive mind of AI assistants working in tandem, you're on the right track. Swarm could allow multiple agents to divvy up tasks, share findings, and coordinate on complex workflows—think of it as a project team where everyone actually pulls their weight.

There's also mention of task modes like search and batch processing, which would make K3.1 more of a Swiss Army knife than a one-trick pony.

A Quick Look Back at K3

To put this into perspective, the current flagship Kimi K3 launched just a couple of months ago, in July 2026. It boasted a whopping 2.8 trillion parameters, native visual capabilities, and a 1 million token context window. Under the hood, it employed architectural tricks like Kimi Delta Attention, Attention Residuals, and sparse MoE. K3.1 will need to build on that solid foundation—and from the sound of it, Moonshot is aiming to do exactly that.

What's Still Under Wraps

Of course, leaks are just leaks. We don't yet know the exact performance metrics, how K3.1 will compare to competitors, or whether it'll retain the "flagship" crown. Moonshot hasn't made anything official, so take this with a grain of salt. But if the rumors hold true, K3.1 could be a compelling upgrade for developers and power users alike.

Key Points

  • Kimi K3.1 is rumored to launch next month (October 2026) with three reasoning levels: Low, High, Max.
  • Leaked API responses hint at an "Extra Long" context option supporting 1 million tokens.
  • New features may include Agent mode, Swarm multi-agent collaboration, and task modes like search and batch processing.
  • The current Kimi K3 (July 2026) has 2.8T parameters, native vision, and a 1M token context window.
  • Official details are still scarce; treat these leaks as unconfirmed until Moonshot makes an announcement.