Zero is an AI agent that connects to 100+ tools and does the work. Reports, triage, outreach, research. In Slack or on the web. It can take a standing job, work across your tools, and report back when it is done. Zero is hosted, with safer permissions, ready for non-developers. It runs autonomous recurring tasks, daily error scans, tech debt reports, morning briefs, without being prompted. Zero carries past decisions, project context, and your preferences across sessions. It resolves your identity across GitHub, Slack, and Linear automatically. Every task runs in its own microVM. Credentials never leave the sandbox. Fully auditable. And open source.
AI Chatbot · 42 tools
Best AI Chatbot Tools (2026)
Compare AI chatbots for everyday help, customer support, website bots, character chat, and free plans — from general assistants to ChatGPT alternatives.
All AI Chatbot tools
Humalike provides behavioral infrastructure for humanlike AI agents, offering APIs, models, and benchmarks. It includes seven behavioral components—turn-taking, norms, persona, theory of mind, social observability, social memory, and social signals—that are model, use-case, and stack agnostic. These components are designed for both 1:1 and group interactions, enabling agents to feel human in various scenarios such as gaming, coworking, therapy, companionship, education, humanoids, and communities. Humalike emphasizes trust with SOC 2 Type II and ISO 27001 compliance in progress, and offers a free tier with $20 in credits for new accounts.
Z.ai is an advanced AI chatbot and agent platform powered by GLM-5.2, offering free chat with no login required. It handles long-horizon tasks including full-stack code generation, AI-powered slide creation (Magic Design), and deep research. An API is available for developers to integrate GLM models into their own applications.
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What is an AI chatbot?
An AI chatbot is a program you talk to in plain language, powered by a large language model (LLM). It replies in context, remembers earlier turns, and can search the web, read documents you upload, or call other tools. They range from general assistants like ChatGPT and Claude to narrow bots embedded on a website to answer customer questions.
Core features to look for
- Natural multi-turn conversation with context across a session
- A capable model underneath (GPT, Claude, Gemini, or open-source)
- Memory of past messages, sometimes across chats
- Answers grounded on your own docs, site, or knowledge base
- Tool use: web search, code, image generation, API calls
- Deploys as a web app, mobile, embeddable widget, or API
Who uses AI chatbots, and how
01
General assistant chat
Draft text, ask questions, brainstorm, and learn with an everyday writing partner.
02
Customer support & website bots
Answer buyers instantly with a bot trained on your docs, and capture leads.
03
Character & companion chat
Talk to roleplay characters and companions for fun, practice, and creative writing.
04
Developer & coding help
Explain code, generate snippets, and debug inside your editor or terminal.
How does an AI chatbot work?
Most chatbots run on a large language model trained on huge amounts of text. Given your message and the earlier conversation, it predicts a helpful reply token by token. Bots that answer from your content add retrieval — pulling relevant passages from your documents first — and extras like web search or code execution are added as tools the model can call.