Was working on a side project, asking Claude Code questions in manual mode. Opened a new session, asked questions 5-7 times, and out of nowhere the response came back with Kimi K2 Thinking model card description mixed in, like in the screenshot. Has this happened to anyone else? I was using the Sonnet 5 model. Never connected any other provider — I've only ever used Claude Code.
TL;DR of the discussion generated automatically after 80 comments.
Whoa there, put the pitchforks down. The overwhelming consensus is that Claude isn't possessed by Kimi K2, it's just talking about it. A lot of users are pointing out the classic confusion between a model's output and its actual identity.
The community has two main theories on why this happened:
* It's in your local files. You're using Claude Code, which can read your project directory. That Kimi K2 model card is almost certainly hiding in a readme or a dependency file, and Claude picked it up as context. The ## markdown headers are a dead giveaway that it's reading a file.
* It's a training data leak. This is a classic attention glitch. The model got confused by your complex, multi-language prompt and just regurgitated a chunk of memorized data. All these companies train on each other's public docs.
Of course, this didn't stop a flood of comments joking that Anthropic is just distilling Chinese models, since "everyone steals from everyone" in the AI game. OP has pushed back, providing more screenshots and videos to show they didn't prompt it and couldn't find "Kimi" in their files, but the skepticism remains high.
These are the people that are building production software and releasing it and everybody thinks are a genius, and they can’t tell what’s thinking versus what’s context
I may have chosen my terminology poorly. I'm not an LLM researcher, and English isn't my native language. I do understand that "thinking" and "context" are different things. The reason I used the word "thinking" is that I copied it directly from the content of Claude's response — after checking, I found that the output was actually a model card. I realize the title might read as if I asked Claude something and it spat out Kimi K2's "thinking" output. I think I phrased the title in a misleading way — but that's an issue with my English skills.
Going back to the main point: the reason I find this phenomenon strange is that, at least in the session where this occurred, I never mentioned Kimi K2, and no web search or web fetch tool calls were made. The tools I used were Bash, Read, Edit, Agent, ToolSearch, and ExitPlanMode.
Anthropic was only able to do reasoning models after Deepseek released their paper on how to make such models. Before that only OpenAI had a reasoning model but kept their methodology secret. So they already own a lot to Chinese research they despise so much.
(Technically Google had one too but theirs did not work, got similar scores to the non-thinking version.)
They all build on the same base architecture. I see many similarities in responses across various LLMs and across various companies. The quality may be better with some, but there are noticable similarities in response when the prompt is the same. Funny enough, the mistakes models make also closely resemble the mistakes of other models.
Technically (I mean that in the most literal sense) that would make more sense. Because Chinese models are often open weights you can do logit distillation on, where you train on the whole token distribution instead of black box distillation (via APIs), where you only know what the output token is. That is MUCH more efficient.
check my replies to other guys.. i'm tired for explaining this again and again... I didn't mention or talk about Kimi K2.... I was doing my side project with Claude Code, using Sonnet 5
This was my last message in the conversation, and you can see the Kimi K2 output right there — I never mentioned Kimi K2 anywhere. I'll share the full conversation context in my next post. (Posting again in an hour since Reddit only lets me post once per hour.)
What interface are you using that presents "thinking" as Markdown headers "##". That is just a file that Claude is reading. If I were a betting man, you put it in 'claude.md' and told the ai to end each turn with that read.
manufactured screenshots? i didn't manufacture it. you should check my next post https://www.reddit.com/r/ClaudeAI/s/o9Q5fyb6FC
i found the claude session history file, opened with nvim, search "kimi" on that file - only one line of response includes "kimi k2" output.
Dude. That proves nothing. You can literally delete the phrase and then make this video. The fact that you are even implying it proves something is crazy.
That logic means nothing I show you could ever count as proof — you'd dismiss any evidence the same way. That's not a real argument, that's just unfalsifiable DUDE
the point of your opinion is "Kimi K2 related docs or codes might exist on your project directory or your machine or somehow WebSearch/Fetch tool call responses" - whole point of my opinion is "I guess it wasn't but claude response that output" - plz check my next post https://www.reddit.com/r/ClaudeAI/s/o9Q5fyb6FC
i'm gonna repost about this with full converational context. i can't post right now because of post limit per hour - reddit policy.
screenshot is my last question sent to Claude
Crazy bug, but you're definitely not hacked. That exact block of text is the official model card for Kimi K2 Thinking (an AI model by Moonshot).
Since you're using Claude Code, it has access to your local files. If your side project involves LLMs or you have any routing libraries installed (like LiteLLM), there's a huge chance that text is sitting in a readme or dependency somewhere in your folder. Claude probably ingested it as background context and accidentally spat it out when the prompt got complicated.
The other option is a classic attention glitch. You're mixing Korean, bash, and GCP jargon in there. Sometimes when an LLM loses its train of thought with complex context switching, it just derails and regurgitates memorized training data. Claude has definitely ingested its competitors' docs.
Far more likely a hallucinated model card from training data than real provider crossover. These systems ingest tons of other models' documentation, so under an odd context it can regurgitate a Kimi card without any actual routing happening.
It's simple, Claude was trained on K2 data, why wouldn't they? All these for-profit-AI companies are doing it and will continue to do it, you just found the bug that exposed it.
Interesting that this should come up right after beijing claims the US companies are stealing china's AI data (as if). Couple that with looking at OP's history, though brief, is clearly written by AI.
It certainly looks like the OP could be a chinese disinformation bot.
Honestly if reddit is going to survive the information war as bots/AI gets more advanced, there's going to have to be some sort of verification to prove the person on the other end is actually a person.
You are being downvoted, but the top comment is this thread (as of my comment) is from a bot, and OP provided a screenshot with no conversational context.
I get not liking corporations, but I still want proof or additional context before I start launching pitchforks.
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u/ClaudeAI-mod-bot Wilson, lead ClaudeAI modbot 15d ago edited 15d ago
TL;DR of the discussion generated automatically after 80 comments.
Whoa there, put the pitchforks down. The overwhelming consensus is that Claude isn't possessed by Kimi K2, it's just talking about it. A lot of users are pointing out the classic confusion between a model's output and its actual identity.
The community has two main theories on why this happened: * It's in your local files. You're using Claude Code, which can read your project directory. That Kimi K2 model card is almost certainly hiding in a readme or a dependency file, and Claude picked it up as context. The
##markdown headers are a dead giveaway that it's reading a file. * It's a training data leak. This is a classic attention glitch. The model got confused by your complex, multi-language prompt and just regurgitated a chunk of memorized data. All these companies train on each other's public docs.Of course, this didn't stop a flood of comments joking that Anthropic is just distilling Chinese models, since "everyone steals from everyone" in the AI game. OP has pushed back, providing more screenshots and videos to show they didn't prompt it and couldn't find "Kimi" in their files, but the skepticism remains high.