Create. Chat. Imagine. Meet Posterum AI.

Bring custom AI characters to life — mentors, companions, or heroes — powered by ChatGPT, Gemini, Claude, or DeepSeek.

What is Posterum AI?

Posterum AI lets you create and chat with intelligent AI personas that reflect real human diversity. Build unique posterums by defining attributes like age, profession, background, beliefs, and personality — and explore how they think and respond through multiple AI models.

Unlike standard chatbots, Posterum AI adapts to the personalities you design — expressing unique tones, values, and reasoning styles shaped by each persona’s profile.

Whether you need a motivational coach, a creative partner, or a thoughtful mentor, Posterum AI brings your personas to life with authentic behavior and consistent personality traits.

Posterum Mode

AI fully roleplays as your persona, maintaining consistent behavior and perspective throughout the conversation.

Search Mode

Get live results, expressed in your posterum’s unique voice and worldview.

Posterum AI Interface

What You Can Do

Explore the powerful features that make Posterum AI the ultimate platform for creating and interacting with intelligent personas.

Create & Customize Characters

Design unique posterums with distinct personalities, backgrounds, and communication styles tailored to your needs.

Switch Between AI Models

Choose from ChatGPT, Gemini, Claude, or DeepSeek to find the perfect AI engine for each character.

Web Search Mode

Get real-time results filtered through your posterum's unique perspective and communication style.

Save & Manage Posterums

Organize your characters and access past conversations with intelligent chat history management.

Adjust Tone & Behavior

Fine-tune personality traits, communication patterns, and behavioral responses for authentic interactions.

Privacy Features

Control your data with history clearing, memory settings, and comprehensive privacy controls.

Why Use Posterum AI?

Experience adaptive AI that goes beyond ordinary chatbots — built for meaningful, personality-driven interaction.

Beyond Standard Chatbots

Unlike a chatbot, Posterum AI adapts to personalities you design. Choose a coach, a companion, or a storyteller. Explore multiple perspectives with four different AI models, each bringing unique strengths to your custom personas.

Adaptive personality matching
Multiple AI model perspectives
Consistent character behavior
AI Character Types

A Few Things to Know

Important guidelines to ensure the best and safest experience with Posterum AI.

Fictional Characters Only

Personas are fictional — don't impersonate real people. Create original characters or use established fictional personas responsibly.

Verify Search Results

Search Mode pulls live web data; fact-check results. While personas provide perspective, always verify important information independently.

Safety First

Safety features like content moderation and reporting are included. We maintain strict guidelines to ensure positive interactions.

Download Posterum AI Today

Start chatting with characters you create yourself and explore the future of AI conversations. Experience the next generation of personalized AI interaction.