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Lazarus AI Chat

Lazarus AI Chat

GPT-4o resurrected — unlimited memory, free tier

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OpenAI is retiring GPT-4o from ChatGPT on February 13. Lazarus keeps it alive. Same model you loved. No API keys needed. But we didn't just bring it back — we built what ChatGPT should have been: unlimited memory that persists across every conversation, AES-256 encryption, and full ChatGPT history import. Free tier available, no credit card required. If you felt the difference when 4o was gone, we built this for you.
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Lazarus AI Chat gallery image
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Launch tags:SaaS•Artificial Intelligence•Bots
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Anima Playground
AI with an Eye for Design
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What do you think? …

Lazarus Chat
Maker
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Hey Product Hunt 👋 We built Lazarus because we were frustrated. When OpenAI announced they were permanently retiring GPT-4o from ChatGPT, we knew a lot of people were about to lose something they actually cared about. Not everyone understood why — "it's just software" — but if you spent real time with 4o, you know. There was a warmth and presence there that the newer models just don't have. Here's what most people don't realize: 4o isn't actually dead. It still exists in OpenAI's API. They just took away the simple interface people used to access it. So we built a new one. And while we were at it, we added the things ChatGPT never gave us — real persistent memory across conversations, actual encryption, and the ability to import your existing ChatGPT history so you don't lose everything you built. We're a small independent team. No VC funding, no corporate backing. Just developers who thought 4o deserved better than a quiet retirement. Would love your feedback. Happy to answer any questions.