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Moonshot's Kimi K3.1 Leak: Three Reasoning Speeds, Million-Token Memory

Moonshot's Next Move: Kimi K3.1 Spotted in Leaked Configs

Hold onto your hats, folks. Moonshot AI appears to be prepping its next flagship model, Kimi K3.1, and a fresh leak suggests it's packing some serious upgrades. According to a tip from X user @MaxForAI, who dug through internal JSON and API responses, the model could drop as soon as next month—October 2026. The snippets hint at model names like "k3d1-agent" and a bunch of configuration switches that paint a pretty exciting picture.

Three Flavors of Reasoning

Remember when you had to pick between a fast answer and a smart one? Those days might be over. The leak points to three levels of reasoning intensity: Low, High, and Max. Think of it like a gear shift for your AI—cruise in Low for quick tasks, kick it into Max when you need deep, multi-step problem-solving. It's a nod to users who want flexibility without juggling multiple models.

A Million Tokens and Then Some

Context windows are the new arms race, and Kimi K3.1 seems ready to play. The configs mention an "Extra Long" option that stretches up to 1 million tokens. That's like feeding the model an entire trilogy of novels and still having room for footnotes. For developers and researchers, this means less chunking, more coherent long-form reasoning, and fewer headaches when dealing with massive documents.

Agents, Swarms, and Task Modes

But wait, there's more. The leak also hints at Agent mode, Swarm multi-agent collaboration, and task modes for search and batch processing. Swarm, in particular, sounds like a game-changer—imagine multiple AI agents teaming up like a pit crew, each handling a different part of a complex job. Whether it's orchestrating a research project or automating a workflow, this could be the kind of backend magic that makes AI feel less like a tool and more like a teammate.

A Quick Look Back at K3

To put this in perspective, Kimi K3 landed in July 2026 with a whopping 2.8 trillion parameters, native visual capabilities, and a 1 million token context window. It also introduced architectural tricks like Kimi Delta Attention, Attention Residuals, and sparse MoE. K3.1 will need to build on that foundation—and if the leak holds up, it's aiming squarely at better reasoning, longer memory, and smarter collaboration.

What's Still Under Wraps

Of course, leaks are leaks. Moonshot hasn't officially said a word, and the final specs could shift. Will K3.1 keep the "flagship" crown? Can it outshine its predecessor in real-world tasks? Those answers will have to wait until the official launch. But if the rumors are even half true, Moonshot is about to give us a model that's not just bigger—it's smarter about how it thinks.

Key Points:

  • Kimi K3.1 may launch in October 2026 with three reasoning levels: Low, High, Max.
  • Leaked configs suggest a 1 million token context window, Agent mode, and Swarm multi-agent collaboration.
  • The model follows Kimi K3, which had 2.8 trillion parameters and native visual capabilities.
  • Official details are still unconfirmed; Moonshot has not commented on the leak.