MyLLMChat vs Promethic

MyLLMChat is a fully local AI chat app deeply optimized for Apple Silicon. All inference runs on your device — no chat content, prompts, or personal data ever leaves your Mac. Privacy is the default, not an upgrade. Highlights: • Fully offline — no internet required after a model is downloaded • Broad model support: Llama 3, Gemma 2, Qwen 2.5, DeepSeek, Mistral, and more • Built on mlc-llm + Metal — squeezes every drop of performance out of your M-series chip • Multimodal: image understanding, plus PDF / Word / Markdown document RAG with cited sources • Voice mode: on-device Whisper STT and high-quality TTS for natural voice conversations • Rich rendering: Markdown, LaTeX math, Mermaid diagrams, syntax highlighting for 50+ languages • End-to-end encrypted iCloud sync across Mac, iPhone, and iPad • Built-in OpenAI-compatible local API server — wire your local model into any third-party tool • Pro sampling controls: Temperature, Top P, Top K, Min P, frequency / presence / repeat penalties Built for lawyers, doctors, researchers, developers, and creators — anyone who needs serious AI help without handing data to the cloud.

If you use AI regularly, you've probably noticed the pattern. You craft a prompt, revise the output a few times until it's right — then next time, the model makes the same mistakes again. Chat interfaces don't remember what worked. Your corrections disappear into the abyss. Custom GPTs hit a wall at 8,000 characters. Output comes wrapped in preambles and commentary you have to clean up. And settings like reasoning effort, image quality, or output format are only available to developers. Promethic is built around a different idea. — Prompts, not chat — Each prompt in Promethic is a standalone tool. No chat history, no "Here's your blog post!" — just your input in, your output out. No character limits. Settings like reasoning effort, image resolution, and structured output are saved with each prompt and applied every time you run it. — Revisions that stick — Every successful run, revision, and edit is tracked. When you're ready, Promethic analyzes your history and refines the prompt itself — baking your corrections into the instructions so the model stops repeating mistakes. Your prompts effortlessly get better the more you use them. — Start with what you have — Already have prompts scattered across notes or ChatGPT? Import them to unlock version tracking, model settings, and a history of succesful conversions. Don't have prompts yet? Feed Promethic examples of what you want — social posts in your voice, images in a certain style, reports in a specific format — and it generates a prompt that captures your patterns and intent. Your vibe, distilled into a reusable tool. — Use cases — Social media content that preserves your authentic voice. Image assets with consistent style and quality. Client deliverables without endless back-and-forth. Any repeatable process where consistency matters. — AI adoption, simplified — Most people struggle to adopt AI beyond occasional chat. Promethic lets you turn parts of your workflow into reusable transformations. You supply the creative spark or unique data — Promethic handles everything else. These transformations evolve with your feedback over time, becoming reliable building blocks you can plug into larger workflows. Promethic is a companion app for Promethic desktop and web accounts. Prompt refinement, data import, and AI prompt generation are all accessible in the desktop app.