Private conversations that never leave your device. No subscription, no data collection, works offline.
OUR PICK
Our pick: Gemma 3 1B + LM Studio
For most people, Google's Gemma 3 1B running in LM Studio gives you 80% of ChatGPT's capability for everyday questions, writing help, and brainstorming — completely free and private. If you have a beefier machine (16GB+ RAM), step up to Phi-4 Mini for noticeably better reasoning.
WHY REPLACE CHATGPT
🔒
Your conversations stay yours
ChatGPT sends every message to OpenAI's servers. Local models run entirely on your hardware. Nothing leaves your device, ever.
💸
No $20/month subscription
ChatGPT Plus costs $240/year. Local AI is free after a one-time model download. The models are open source.
✈️
Works without internet
On a plane, in the countryside, or behind a firewall — local chat works anywhere. No connection needed after setup.
HONEST TRADEOFFS
✅Complete privacy — no data leaves your device
✅Free forever — no subscription
✅Works offline anywhere
✅No rate limits or usage caps
⚠️Smaller models are less capable than GPT-4o for complex reasoning
⚠️No web browsing or real-time information
⚠️Initial setup takes 5-10 minutes
⚠️Needs a reasonably modern device (2020+)
WHICH MODEL TO USE
Gemma 3 1B786 MBOUR PICK
QUALITY
SPEED
MIN DEVICE
Any modern laptop/phone
BEST FOR
Everyday chat, writing, Q&A
Llama 3.2 1B791 MB
QUALITY
SPEED
MIN DEVICE
Any modern laptop/phone
BEST FOR
General purpose, coding help
Phi-4 Mini8.7 GB
QUALITY
SPEED
MIN DEVICE
16GB+ RAM laptop
BEST FOR
Complex reasoning, analysis
Mistral 7B4.3 GB
QUALITY
SPEED
MIN DEVICE
16GB+ RAM laptop
BEST FOR
Long-form writing, detailed answers
Qwen 2.5 0.5B477 MB
QUALITY
SPEED
MIN DEVICE
Anything — even old phones
BEST FOR
Quick answers on weak hardware
BEST APPS TO RUN IT
LM StudioOUR PICK
macOS, Windows, Linux
Beautiful desktop app. Download models in one click, chat immediately. Best for beginners.
Ollama
macOS, Windows, Linux
Command-line tool. Lightweight, fast, great for power users. Runs in the background.
Jan
macOS, Windows, Linux
Open-source ChatGPT-like interface. Good middle ground between simplicity and control.
CAN YOUR DEVICE HANDLE IT?
Excellent
MacBook Air M3/M4Runs all recommended models. Gemma 3 at 40+ tok/s.
Good
MacBook Air M2 (8GB)Handles 1B models well. Phi-4 Mini may be tight.
Good
MacBook Air M1 (8GB)Stick to sub-1B models for smooth experience.
Good
iPhone 16 Pro1B models run well. Use a mobile-optimized app.
Excellent
Gaming PC (RTX 4070)Runs everything including Mistral 7B at high speed.
Limited
iPhone 15 / Galaxy S24Qwen 0.5B and SmolLM2 work. Larger models too slow.