Your AI, Your Rules,
Your Device

Local storage. All models. All settings. No keys. Fixed cost.
Maximum control, zero headache. GhostLM.

+100K
Tokens Processed
0TB
Personal Data Stored in Cloud
+15
AI Models Mastered
Unfair Advantage

Play every AI model like a hand of cards

Claude Sonnet 4 for coding, GPT-5 for writing, Gemini 2.5 Pro for research. Switch mid-conversation when one model hits its limits. It's like having the entire AI industry working for you.

GPT-5, Claude Sonnet 4, Gemini 2.5 Pro
Switch models mid-conversation
Always up-to-date with new releases
Multiple AI Models
Total Control

Customize and tailor system prompts as you wish

Tell the AI it's a harsh critic, a creative genius, or Dave from accounting. Adjust temperature, frequency, presence penalty. Build personalities that actually work for you, not against you.

Custom AI personalities
Fine-tune all parameters
Save and reuse configurations
System Prompt Customization
Privacy First

Local storage and exportability

Your conversations stay on YOUR device. Export as JSON, CSV, or plain text anytime. We don't log, we don't track, we don't even want to see your data. It's yours.

100% local storage
Export in any format
Zero data collection
Local Storage

Simple, honest pricing

Start free, upgrade when you need more firepower

$0

Free

Access to basic models
Local storage
Custom system prompts
Export conversations
20 messages per day
Most Popular
$20

Premium

All advanced models (GPT-5, Claude Sonnet 4, Gemini 2.5 Pro, etc.)
Unlimited conversations
Priority access to new models
Extended usage limits

What's the point?

You might not like to have your chat history on someone else's computer. Or maybe, you're just a power user.

01

What kind of a life is it when you can't run experiments on LLMs?

Good news is that, now you can. Tamper with the system prompt. Tell them their name is Dave. Turn temperature up to max. Whatever.

LLMs will no longer call you "the top dude of all time". Unless you believe in that, "architecturally".
02

Is it not just *kinda* creepy to have 4 years of chats on someone else's computer?

Now the chat history stays on your device. And you can even export it as JSON. Do you not know what JSON is? Just ask GhostLM!

Everything stays on your device. Unless you like iCloud too we can add that in the future (opt-in only).
03

You wouldn't like to get locked in when the other guys make a galaxy-tearing breakthrough

You should try the other stuff, really. Some models might refuse your requests. But you can always switch to another model that's more cooperative.

This is not officially endorsed by our AI Alignment Team.

Frequently Asked Questions

Everything you need to know about GhostLM

How much does GhostLM cost?

GhostLM is free to use! However, you can unlock higher usage limits and advanced models with a $20/month subscription.

Do I need my own API keys?

No! We handle all the API integrations for you. Your messages go through us to the LLM providers so you don't need to manage keys, billing, or rate limits.

Which AI models are supported?

We support GPT-5, Claude Sonnet 4, Gemini 2.5 Pro, and more. If you want to use a model that's not yet available, email us at info@ghostlm.app

Is my data really private?

Your privacy is important to us. We never log your chats. While your messages are sent to LLM providers for processing, they don't receive any information that could identify you.

Can I export my conversations?

Yes! You can export your entire conversation history as JSON, CSV, or plain text. Your data is yours, always.

What platforms are supported?

GhostLM is available for macOS, iOS, and iPad. We're considering Windows/Linux versions but no timeline yet.

Can I create custom AI personalities?

Absolutely! You have full control over system prompts and can adjust all parameters like temperature, frequency penalty, and presence penalty. Create as many custom personalities as you want.

How is this different from using API keys directly?

API keys are great if you want to manage billing across multiple providers and build your own interface. Most people don't. We handle all that complexity so you can focus on actually using AI.

Take Control of Your AI Conversations

Local storage, unlimited customization, every model. A better way to chat with AI.

Free to use. $20/month for higher usage limits.