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
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.
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
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
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
Duck.ai offers anonymous access to popular AI models. It ensures privacy by keeping conversations untracked and outside AI training data, with seamless model switching.
Free
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
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
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
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.
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
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.
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
SpicyChat.ai is an AI uncensored chat platform designed for immersive, roleplay and engaging conversations with themes of AI characters in spicy conversations.
Freemium
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
HammerAI is a private and free AI chat platform for creating and interacting with AI characters in role-play scenarios. The AI model runs locally in the browser for free, ensuring user privacy and security.
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
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
Kimi.ai provides free access to the K3 is a multi-modal AI model. It excels in reasoning tasks, supports large context windows, and integrates text and vision data, making it suitable for developers seeking robust AI solutions with enterprise security.
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
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
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
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
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
ownAI lets users build, host, and deploy custom AI assistants without coding. Create assistants for personal tasks, marketing, or support, with data hosted on your domain. Import knowledge bases, run models locally, and access open‑source code on GitHub.
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
AI-powered chat tool that allows users to interact with a virtual girlfriend or boyfriend. Choose from over 5000 characters.
Subscription
Emma lets teams build custom GPT‑4 chatbots that pull data from documents, spreadsheets, databases, or APIs. Each assistant can be deployed to Slack, Zapier, email, or via API, with fine‑tuned permissions per bot.
Freemium
Chatworm offers web, Android, and Windows interfaces to chat with multiple LLMs (OpenAI, Anthropic, DeepSeek, Gemini, Qwen, Mistral, Grok). It supports Whisper speech, TTS voices, DALL‑E 3 image creation, ChatGPT Vision analysis, model switching, and dark mode. Open‑source on GitHub.
Freemium
Agent One is a no‑code platform that lets businesses build white‑labeled AI assistants on custom domains. It supports OpenAI, Claude, and Gemini, offers one‑click deployment, real‑time data fetching, API integration, and multilingual analytics.
Subscription
- $8/mo
Chat Thing lets organizations build custom ChatGPT bots trained on internal content from Notion, websites, YouTube, and more. Deploy across web, Slack, Discord, WhatsApp, Telegram, and email with automated syncing, multilingual support, response guards, and analytics.
Freemium
- $14/mo
UChat AI Agent creates no‑code chatbots for Web, WhatsApp, Messenger, Instagram, Telegram, and SMS via a drag‑and‑drop builder. It supports GPT, Claude, Gemini, and real‑time function calls, plus a unified CRM, analytics, and integrations with Shopify, HubSpot, Zapier, Stripe, and Calendly.
Freemium
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
Chatwith is a no‑code platform that embeds AI chatbots on websites, intranets, and messaging apps. It trains on internal content, connects to 5,000+ apps for real‑time data, supports 95+ languages, offers custom branding, analytics, and API integration.
Subscription
- $19/mo
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
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
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
Webbotify trains a chatbot directly from your site’s content, delivering instant multilingual responses in 95 languages. One‑line code deployment, email capture for lead generation, analytics, brand‑customizable UI, and automatic updates from new documents keep support current and secure.
Subscription
- $19/mo