Open Source Chatbot
The best 50 Open Source Chatbot AI tools - Free & Paid
Explore 50 AI for Open Source Chatbot
OpenAssistantGPT is an open‑source SaaS that lets you build no‑code AI chatbots for websites. It auto‑crawls a URL, supports GPT‑4/3.5, handles file attachments, SAML/SSO, API calls, and web search, with GitHub source and Vercel SDK.
Freemium
- $18/mo
ChatGPT is an AI chatbot based on large language models family created by OpenAI for general purpose chat that allows users to ask any question or prompt to AI, making it a useful tool for many writing processes.
Freemium
- $20/mo
YesChat.ai unifies chat, music, video, and image generation in a browser platform, offering DeepSeek‑R1, GPT‑4o, and Claude 3.5 Sonnet for conversation, royalty‑free music from text, text‑to‑video, and image creation. It supports languages and customizable bots for research and marketing.
Subscription
DeepSeek-V3 is an advanced AI model offering leading performance in open source LLM, enhanced speed, and global language support. It sets new benchmarks for inference speed among open-source models.
Uncensored AI delivers a chat platform featuring Claude Opus, Gemini, Grok, and MiniMax M2‑Her. It supports text, audio, image, and code interactions, including image‑to‑video via Image Studio. API beta and usage stats benefit developers, writers, educators, and researchers.
Freemium
Claude is an advanced AI assistant designed for a variety of tasks, including code generation, writing, productivity enhancement, and business automation. It is highly adaptable, intelligent, and customizable to meet diverse user needs.
Freemium
- $18/mo
Prechance's NSFW AI Character Chat lets you engage in conversations with AI characters online, free, unlimited, and without sign-up. Your data is locally saved.
Free
Chatclient lets businesses build ChatGPT‑based chatbots trained on uploaded content. It supports 95+ languages, auto‑retraining, custom personas, and white‑label deployment, and integrates with Slack, WhatsApp, Zapier, APIs, and web/mobile apps.
Freemium
Overchat is a versatile AI app that integrates multiple AI models like ChatGPT, Claude, and Gemini for dynamic text generation, summarization, coding assistance, and image creation. It supports multilingual translation, homework help, and ensures secure, encrypted interactions across all features.
Freemium
- $7/mo
ChatBotKit is an AI agent platform enabling developers to create, test, and deploy autonomous agents for apps, websites, and messaging services. It supports multiple AI providers, offers memory, custom tools, and enterprise compliance features.
Freemium
- $25/mo
Qwen Chat AI assistant that provides access to Qwen LLM models and can be used by content creators, developers, and researchers, offering web and image searches, artifact management, and more to enhance productivity.
Crushon.ai is an AI-powered NSFW chatbot for AI anime created characters, providing customisable unfiltered chat experience with unfiltered AI characters.
Freemium
- $5.99/mo
Introducing DocsBot AI, a powerful AI tool that helps you create custom chatbots for documentation. Train and deploy AI-powered chatbots in minutes, saving time and improving support experience. Custom copywriting capabilities, embeddable widgets, and integrations with popular platforms like WordPre
Freemium
JanitorAI is a Character AI alternative without filters for chatting with various AI characters including NSFW AI friends. It has numerous chatbots with diverse themes, personalities and genres to explore.
Free
eLBot is a WhatsApp and Telegram chatbot that uses OpenAI‑trained neural nets to answer business, technical, and general queries in real time. It captures leads, automates conversations, and creates content, operating 24/7 with secure privacy.
Free
Chat & Ask AI combines web search, image generation, link analysis, document chat, and YouTube summarization in one interface. It offers up‑to‑date answers, multilingual support, file uploads, and a prompt library, powered by GPT‑5.2, Gemini, Claude, and Stable Diffusion XL.
Free
Quickchat AI is a tool that enables businesses to build chatbots for various purposes using GPT-3 and without coding knowledge. It integrates with messaging apps and live chat software.
Freemium
- $99
BotPenguin lets users build code‑free chatbots for websites, WhatsApp, Facebook, Instagram, Telegram, and Microsoft Teams. A drag‑and‑drop editor, unified inbox, analytics, multilingual support, custom AI personas, automation, and 80+ integrations streamline marketing, sales, and support.
Paid
Le Chat is an AI assistant that simplifies tasks from everyday questions to complex projects. It combines powerful AI with access to various data sources for comprehensive answers, offering features like search, code analysis, and custom workflow building.
Freemium
Chatbase builds and deploys AI customer support agents trained on business data, integrates with CRMs, Zendesk, Slack and WhatsApp, enables automated workflows, human escalation, analytics, multilingual support, and security controls (SOC 2, encryption).
Freemium
- $32/mo
Botnoi AI Chatbot lets users build no‑code chat and voicebots for LINE, Messenger, WhatsApp, web chat, and calls. It auto‑configures agents, pulls knowledge from documents and web content, connects to business systems, and provides real‑time analytics to improve service.
Subscription
SpicyChat.ai is an AI uncensored chat platform designed for immersive, roleplay and engaging conversations with themes of AI characters in spicy conversations.
Freemium
Z.ai chat is an AI-driven conversational tool that utilizes advanced natural language processing to facilitate interactive dialogue and deep search for applications in tech blogs, coding, and research, with API support for developers and content organization features.
AI-powered chat tool that allows users to interact with a virtual girlfriend or boyfriend. Choose from over 5000 characters.
Subscription
The AI tool offers advanced features such as voice recognition, image albums, and chat rooms to create AI chat characters for companionship, gaming, roleplay, and knowledge sharing, with developer support and Discord integration.
Freemium
OpenClaw is a personal AI assistant that automates email, calendar, task and chat workflows—clearing inboxes, composing and sending messages, scheduling events, checking reservations, integrating chats and cloud services, with persistent memory, background jobs and developer-friendly self-hosting an
Free
CloseBot automates creation and deployment of conversational AI agents across web, SMS, Facebook, Instagram, WhatsApp, and more. It handles appointment booking, lead qualification, and multilingual support with LLMs, enabling 24/7 real‑time engagement, faster responses, and higher conversions.
Freemium
Chatbot AI provides access to various AI models for text conversations and image generation. It features an advanced search function, supports idea brainstorming, and allows for both casual and in-depth discussions with fast response times and chat history.
Freemium
- $14.99/mo
Instabot lets businesses build, deploy, and manage AI chatbots on websites, Messenger, SMS, and other channels. With a visual builder and templates, users capture leads, schedule appointments, route to humans, and track performance via analytics.
Subscription
- $49/mo
Chatbox - AI Copilot Desktop is a versatile cross-platform (Windows, Mac, Linux) tool featuring multiple LLN models. It combines an ergonomic design, diverse AI model assistance, and local data storage to boost productivity by converting conversations into valuable insights.
Freemium
- $3.99/mo
Poe.com is a web tool for chatting with multiple AI models from one interface. It offers free quota to chat with ChatGPT and GPT4, and the quota renews daily.
Freemium
Monica integrates GPT‑5.2, Claude 4.5, Gemini 3 Pro, Sora 2, and Nano Banana into a single extension for Chrome, Edge, Windows, macOS, Android, and iOS. It supports chat, web search, translation, summarization, image/video creation, code assistance, OCR, PDF conversion, and resume review.
Free
YourChat.ai is a free AI messenger fueled by ChatGPT, providing unregistered instant access to information and guidance. Ask about diverse topics and receive prompt responses for versatile queries and engagements.
Free
CrawlChat converts product and technical documentation into an AI chatbot and searchable knowledge base for websites, Discord, and Slack, importing from Docusaurus, Notion, Confluence, GitHub, files, and YouTube, with source citations, ticket escalation, analytics, and customization.
Free trial
- $45/mo
Algochat.io provides real-time AI chatbots for streamers that listen to microphone triggers and audience messages to generate context-aware voice and text replies, emote reactions, and keyword/donation-triggered responses, with multi-bot personalities, platform integrations, and privacy controls.
Free
Chat100.ai offers a single web interface that integrates GPT‑5.2, GPT‑5.1, GPT‑4o, Grok‑4.1, Grok‑4, Grok‑3, Gemini 3 Pro, and Gemini 3 Flash, enabling instant model switching, side‑by‑side comparison, and streamlined workflows for writing, coding, design, and research.
Free trial