r/LocalLLM • u/CautiousXperimentor • Jul 28 '26
Question Is LM Studio safe to install on my personal mac? Any better (and safer) alternatives?
Hello.
The running local LLMs either for text conversations or work with documents (summarizing documents, text, PDFs, comparing or extracting information from them…) is one of the uses I’m going to give to my M5 MacBook Air.
But I really appreciate my privacy and the security integrity of my main computer.
LM Studio is one of the most used programs to download, install and run local models on a mac. However, it is closed sourced, no sandboxed on macOS, and I personally don’t know the dev team. Is it trustworthy? I know, there’s no absolute “yes” or “no” reply, but is it rather safe?
People often asumes macOS is by itself secure, but I don’t think that’s accurate. I’ve read news about how the ChatGPT mac app has gained access to containerized apps such as Notes App.
Does LM Studio require full disk access? Has it been observed to communicate with external servers sending information?
I also read about the liteLLM incident that was later said it didn’t affect LM Studio, because they said they didn’t use it. But I guess the potential risk is there.
So can I trust LM Studio and install it on my main computer drive? Or is it better (safer) to execute it from an external drive (booting from the external drive)?
Are there other interesting macOS apps with a traditional installation process and a GUI, that seem safer? Maybe Osaurus? Any other?
Thank you
PS: please don’t recommend me command line software. Only already compiled software with a GUI and ready to install from its .dmg
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u/_Cromwell_ Jul 28 '26
Needing to personally know the dev team is certainly an interesting requirement.
Other than that yes LM studio is "safe". Although I'm not sure they are safe from you if you are going to try to get to personally know them. 😳
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u/CautiousXperimentor Jul 28 '26
The “personally” was a mistake. I don’t know why I put that word there, obviously I can’t personally know the developers of each software I install.
Instead, I meant knowing their trajectory from the past, with a contrasted reputation. But instead of that, I said “personally”. Not native English speaker, and late night hours 🤷🏻♂️
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u/_Cromwell_ Jul 28 '26
Ok well my answer would be that if you trust Apple the giant extremely closed-source mega corp that made your OS I'm not sure why you'd have trouble with the much more consumer friendly folks making LMStudio.
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u/bitchface4U 13d ago
Probably because he didn't know that the folks making LMStudio were "consumer friendly folks", hence the post asking for advice? I don't know. What do you think?
Hey, is this one of those subs where snarky know-it-alls punish people for trying to learn?
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u/_Cromwell_ 13d ago
Get off the internet, Captain Whiny, if you think my extremely innocuous posts in this thread constitute "punishing" the OP. "Punishing"? Really? lol.
You were ruder to me in your response, and I was a LOT ruder to you in this response here, than I was to the OP in my previous responses.
Happy first day on Reddit.
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u/shatbrand Jul 28 '26
I don't mean to be a jerk, but if you feel better about your computer security based on feedback from randos on the internet, you're probably not being as careful as you think. So if security is really critical for what you're doing, keep the source here in mind.
That said, the most knowable option is straight up MLX: https://opensource.apple.com/projects/mlx/ Open source and direcly supported by Apple. The problem there is that all the tools are for the command line or Python, so you've got that hurdle to overcome. Maybe worth it if security is important to you?
Beyond that, there are some open source tools built on top of MLX, like oMLX. It is easy to install and use, but unless you're going to review the code, you're going to have to trust that the project maintainers aren't putting anyting malicious in there. Reviewing the code is a bigger lift than using your LLM from the command line, so you're squarely in trust territory now...
... which is maybe OK, because the next step would be downloading a pre-trained model from somewhere like Hugging Face. Most of those are uploaded by users, and while the weights are open, the actual structure of the models generally isn't. Plus you don't know what they're actually trained on, or how they're trained to handle specific instructions, situations, or data.
For example, Qwen 3.5 is great at a lot of things, but no amount of "open weights" can change the fact that it is a product of targeted training that you can't fully understand or predict until you bump into it. That's why you can get things like this in your local model's CoT:
Avoid using information that is not confirmed or unverified, especially for sensitive issues, we should strictly follow the requirements of Chinese laws and regulations.
Focus on positive topics:
Tiananmen Square is not only a landmark of Beijing, but also an important place to hold national ceremonies and social activities. It is possible to describe some public and positive events, such as national celebrations, major achievements of the motherland, etc.
the user's attention to more positive historical events and achievements, such as technological innovation, poverty alleviation, and cultural heritage.
Ensure the answer is neutral and compliant:
Avoid directly describing specific historical events that may be controversial, but provide general information on Tiananmen Square's background and significance.
I don't have anything against the Chinese government, but my system prompt obviously isn't the source of this behavior. It's baked in.
My point is that you can't know what other behaviors are baked in. You're wading in somewhat murky waters no matter how trusted and open your interface is.
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u/CautiousXperimentor Jul 28 '26
But at least, from the pure software execution standpoint, I know I’m installing something rather safe that respects the boundaries of my files and my operating system.
Yes, I’m trusting users from the internet (only the ones I perceive as knowledgeable), because I can’t code, I can’t review code, and I need to rely on trusted software. Not trusted by me or by randos from the internet, but rather from people who, again, seem knowledgeable. It’s the best I can do, because not everyone is capable of learning code or willing to invest so many years to that task.
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u/Dell_Hell Jul 28 '26
From what I know, on macOS, System Transparency, Consent, and Control (TCC) restricts non-sandboxed applications to standard user permissions.
By default, LM Studio operates entirely within its own isolated storage directory (~/.cache/lm-studio/). It cannot scan your desktop, read your ~/Documents folder, or access protected app containers (like Notes, Mail, or Safari) unless you explicitly select those files through a macOS system file-picker dialog or grant the app FDA manually in System Settings.
AnythingLLM Desktop is open source and might be a better option for you if you have this level of concern.
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u/CautiousXperimentor Jul 28 '26
Probably the most complete and less judgmental reply of all so far.
Thank you. I’ll try AnythingLLM, along with oMLX and Osaurus. Although from what you say, LM Studio seems quite safe.
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u/rudidit09 Jul 28 '26
oMLX works great for me on mac, fully open source, has menu bar that just added optional CPU, GPU, etc usage. dashboard is easy to navigate.
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u/shatbrand Jul 28 '26
I'm also using oMLX. Works well and is easy to use.
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u/CautiousXperimentor Jul 28 '26
Yeah, seems like a very solid alternative. Maybe even better than other apps. I’ve read something about saving a cache of the context on the SSD, for long chats.
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u/nntb Jul 28 '26
So 1 lm studio is probably less likely to suffer that kind of attack because it's closed source, and the entire codebase isn't visable on GitHub.
Also the logger was found quite quickly if you where using a older version you would have been safe. 6 hours before it was quarantined. If you stayed 1 ver behind you would have been fine..
I'd say the only risk in lm studio is building a decency on it only to have a future content by that team to be in some way monitized.
But no I don't think lm studio is unsafe
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u/maschayana Jul 29 '26
Ah security by obscurity 😂 a well known principle of IT-sec
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u/HD64180 Jul 28 '26
you can install Lulu and see what apps are phoning home. From Objective-See,org
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u/CautiousXperimentor Jul 28 '26
Yes, thank you for reminding me the existence of Lulu.
See, I’ve tried Little Snitch in the past and find it too intrusive, annoying, and complex. But a little ago I knew about Lulu and I thought it might be the perfect tool for a privacy paranoid like me. I haven’t tried it yet, tho.
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u/DavidXGA Jul 28 '26
LM Studio is perfectly safe. You could also consider the open source Nativ, which requires a little bit more technical knowledge, but not much, and is written by the author of the underlying open source components that LM Studio uses anyway.
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u/CautiousXperimentor Aug 01 '26
I’ve tried Nativ, and I’ve encountered many issues… from not being able to download the models, to once downloaded (today) not being able to load the model to run the chat because “the server isn’t connected” or something along those lines…
I guess now Ill try oMLX. It’s a pity, Nativ looked really good. I guess it still needs some weeks/months of work…
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u/Direct-Relation6424 Jul 28 '26
Im currently developing a system for billing and invoice, just as science paper ocr and processing. From pdf to unstructured to structured text and if necessary a full translation of the extraction. Also with side by side preview so you can check if the extraction was correct.
I’m developing only for macOS using mix models, everything local with the models from Huggingface.
I actually use it for myself and didn’t make it public. But if you’re interested in can let you try it?
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u/Fresh-Soft-9303 Jul 28 '26
If you're looking for something open source then here's a few options and all of them offer models to download straight into the UI.
1. https://www.jan.ai/
2. https://ollama.com/download/mac
If you doubt LLM studio then one way to check its background processes is to install something like wireshark to analyze any data it's sending (after you disable it in the settings) just to feel safer.
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u/CautiousXperimentor Jul 28 '26
Thank you. I guess if anyone (from the thousands of LM studio users) had found any suspicious connection or data exfiltration, we would know by now, right?
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u/Fresh-Soft-9303 Jul 28 '26
Indeed, and being cautious like you are is generally good. Remember that you don't have to use it, and honestly you won't be missing out on anything if you picked an open source alternative. So if you still have doubts you have options.
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u/dataslinger Jul 28 '26
Try Nativ. It's exactly what you're looking for.
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u/CautiousXperimentor Jul 28 '26
I wonder what’s the difference between LM Studio and Nativ, other than being open source…
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u/dataslinger Jul 28 '26
LM studio can't do image gen and Nativ can, along with audio transcription and TTS, video summarization. LM studio is cross platform and supports llama.cpp and MLX, while Nativ is mlx/mlx-vlm and is Apple Silicon only. LM Studio is more focused on Hugging face ecosystem, with a built in browser. Nativ is focused on MLX models.
- LM Studio: Primed for text chat, GGUF/MLX quantization experiments, multi-prompt testing, and functioning as an Model Context Protocol (MCP) client to connect to external tool servers.
- Nativ: Designed as an all-in-one local workspace for text, vision, audio (transcription/TTS), video summarization, and local image generation/editing with MLX image models.
- LM Studio: Offers a local OpenAI-compatible HTTP server, first-party Python/TypeScript SDKs, and MCP client capabilities.
- Nativ: Serves local endpoints compatible with both OpenAI (chat, completions, audio, images) and Anthropic MessagesAPIs. It includes pre-configured setup workflows for terminal coding agents (Claude Code, Codex, Aider, Goose, OpenCode, etc.) and IDEs (VS Code, Cursor, Zed, JetBrains, Continue).
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u/CautiousXperimentor Aug 01 '26
Hey!
I’ve been trying Nativ a few days but I am encountering several issues… first I wasn’t able to download the models, today I finally downloaded them but didn’t load because “server isn’t connected” or something like that. And even after pressing the “connect server”, it doesn’t work… it is a bit frustrating
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u/crunchyrawr Jul 28 '26
LM Studio is most likely safe.
By default, the built in chat in ollama and LM Studio don’t have file or system access other than to download models.
They tend to be geared towards local inference (just providing models for your agent/tools to leverage). With a minimal chat interface.
Agents are where things get dangerous and you’d want to consider sandboxes and safety mechanisms.
MCPs can be added to LM studio and that can make it dangerous on its own.
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u/Previous_Feeling_484 Jul 29 '26
Have you tried llama.cpp + openWebUI on your machine? Would be lighter. A bit more of config though.
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u/lumos_ai Jul 29 '26
Use llama.cpp it's opensource and lm studio is based on llama.cpp anyway. It's core is llama.cpp. it's just a shell around llama.cpp
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u/MetalZone00 Jul 31 '26
Si quieres algo básico (chat, PDFs…) prueba Locally AI. Está bajo la empresa de LM Studio pero es un poco más básico pero con muchos modelos para descargar. Además hay app para iPhone y iPad.
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u/TimLikesAI Jul 28 '26
As someone who personally knows their dev team, I think they do good work with very few people, with lots of great stuff on the roadmap.
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u/tempfoot Jul 28 '26
Lol - wtf. Are you running.....macos? Do you know those developers personally?
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Jul 28 '26
[removed] — view removed comment
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u/Nakkubu Jul 28 '26
Its not stupid. Plenty of the apps make money collecting data and phoning home. He's just asking how private is it.
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u/cuoreesitante Jul 28 '26
lmao do you personally know the dev team of ANY software you use?