Chatsistant is a comprehensive conversational AI framework platform with collaboration tools, powered by the latest generation of advanced large language models. Supported models include OpenAI GPT-4.1, GPT-4.1 Mini, GPT-4.1 Nano, GPT-4o, and GPT-4o Mini; G o o g l e Gemini 2.5 Pro Preview and Gemini 2.5 Flash (Thinking); Anthropic Claude 4.0 Opus and Claude 4.0 Sonnet; and DeepSeek V3 and R1, along with all previously supported models such as GPT-3.5 Turbo, GPT-o1, GPT-o3 Mini, Claude 3.5 Haiku, Claude 3.7 Sonnet, Gemini 1.5 Flash, and others, etc. The platform is built for seamless multi-platform deployment, enabling the creation of native applications with cutting-edge AI capabilities — fully integrated with official global partners Zapier and Make for automation.
Your own generative AI Large Language Model framework, designed and launched in minutes without coding, based on your resources.
Your AI can handle inquiries, provide personalized assistance, and even automate tasks, they become indispensable assets for businesses looking to scale and improve customer satisfaction. From basic conversations to advanced lead generation, seamlessly integrating webhooks, APIs, and native integration with platforms like Shopify, Messenger, WordPress, Wix, Square Space, and beyond, the possibilities are limitless.
Control and organize your AI bot responses by effectively enhancing the AI’s knowledge base. With customizable brand identity options and a user-friendly interface, elevate your organization’s intelligence and decision-making capabilities. Curate, clean, enrich, and train your bot on accuracy versus hallucinations. Experience the future of AI training with us.
Chatsistant lets you train your AI chatbot using a wide variety of data sources to deliver accurate, personalized responses—powered by advanced large language models such as OpenAI GPT-4.1, GPT-4.1 Mini, GPT-4.1 Nano, GPT-4o, GPT-4o Mini, Claude 4.0, Gemini 2.5, and DeepSeek V3. You can upload files like PDF, Word, TXT, CSV, XLS, and XLSX, train using images, and add individual website URLs or full sitemaps, which are automatically scraped and indexed to enrich the chatbot’s knowledge.
You can also input question-and-answer pairs to guide conversational behavior, and extract transcripts from YouTube videos using the YouTube source type. When supported, videos can be embedded directly into the chat for a seamless viewing and interaction experience.
Easily manage and organize your data to strengthen the AI’s understanding and relevance. You can customize your chatbot’s persona, tone, and brand identity through an intuitive interface, empowering smarter communication and decision-making across your business.
At Chatsistant, we’re committed to strong data privacy and security. Our platform supports GDPR, CCPA, and other global compliance standards, and we’re actively working toward ISO 27001 certification in partnership with industry experts. Security practices are continuously reviewed and updated to meet modern requirements.
Our framework also supports OAuth tokens, allowing developers to securely manage authentication and access across workflows. Whether you’re building internal tools or customer-facing assistants, Chatsistant helps enforce best practices and protect user data at every level.
Empower your business with a 24/7 AI chatbot as your dedicated customer service. Train it using your business guidelines for instant and efficient responses. No more waiting for your customers – inquiries are addressed instantly. Our diverse data input methods guarantee your chatbot is trained with the latest information, tailoring responses to your customers’ specific needs.
Reduce hiring expenses on customer representatives without compromising service quality. Experience a significant drop in customer tickets, reducing workload and operational costs. Chatsistant automates data updates, eliminating the need for additional training costs.
Immediately connect with visitors, increasing engagement and potential conversions. Collect visitors’ contact information. Don’t miss another lead! Gain actionable data from user interactions to improve your business strategy.
Our intuitive platform allows you to set up custom lead collection forms, ensuring you can track all interactions and follow up as needed. Seamlessly integrated into your workflow, our Lead Management System provides comprehensive insights and analytics to optimize your lead generation efforts. Stay ahead of the competition and maximize your business potential with ease.
To step in as a human agent, navigate to the “Inbox” on Chatsistant. Look for the orange dot signaling a user requesting human assistance. Click it to engage directly with the user. Here, you can utilize features like real-time conversation and personalized support. Start typing your response in the chat input box. Once you send the first message, AI Supervisor and all AI Agents will be disabled, enabling you to have a direct conversation with the user. You can converse freely until the issue is resolved. To end the live chat session and transition the user back to the AI chatbot, simply click “End Live Chat”.
Experience the first and most powerful LLM-native framework for building conversational Al solutions. Skip the tedious process and inflexible behavior of traditional chatbot platforms like Botpress and Voiceflow. Chatsistant allows you to create Al Agents that are trained specifically to handle certain tasks. Our Al supervisor monitors the conversation state in real-time and decides which Al Agent is most suited to handle the current user query.
More than just answering questions, Chatsistant’s AI Agents can use custom tools to take actions and access externally-hosted data sources in real-time via webhooks. Build AI chatbots that can book meetings, process order returns, collect customer contacts, send email alerts, or intelligently redirect to human support agents when needed. Join our community of chatbot developers and learn the best practices of writing your own custom functions to support your AI Agent operations..
Chatsistant uses Retrieval Augmented Generation (RAG) technology. Our built-in suite of AI-assisted debugging tools enable you to review, curate, clean, and enrich the training data after initial extraction is completed. Identify knowledge gaps and fine tune unsatisfactory answers so your chatbot continuously improves. Our human-in-the-loop approach to context refining allows for a significant upgrade in retrieval accuracy and reduction in hallucinations, so you can trust the AI to represent your brand and voice faithfully.
Our intuitive platform allows you to set up custom lead collection forms, ensuring you can track all interactions and follow up as needed. Seamlessly integrated into your workflow, our Lead Management System provides comprehensive insights and analytics to optimize your lead generation efforts. Stay ahead of the competition and maximize your business potential with ease.
Our AI Chatbot solution offers seamless integrations to cover all touchpoints of the customer journey, while also providing features like agent take-over and customizable rules, ensuring a smooth transition between automated and human-assisted interactions for personalized customer support.
📢 Chatsistant integrates with your favorite tools, empowering effortless automation.
🤝 Zapier (8,000+ apps including Chatsistant)
🤝 Make (2,000+ apps including Chatsistant)
🤖 Meta (native integration for Messenger, Instagram, WhatsApp – Beta)
3rd Party Integration
🔗 Boost.space: An alternative to Zapier and Make, integrated our API to connect with 2000+ platforms including Webex, Notion, Google, and Microsoft.
Enhance your AI chatbot with new features, workflows, and
automations through plug-and-play integrations.
Chatsistant is revolutionizing AI-powered conversations with a cutting-edge, customizable chatbot framework. Built on advanced LLMs and RAG technology, our platform empowers businesses to automate interactions, enhance customer engagement, and streamline workflows—all without coding. With seamless integrations, smart automation, and multi-agent capabilities, Chatsistant unlocks endless possibilities for innovation. Join us in shaping the future of AI-driven communication! 🚀
Yes! Chatsistant offers a free forever plan called Launch Free for basic AI chatbot needs. Simply register for a free account, which activates a premium (test all features) 30-day free trial. During or after the trial, go to your subscription page to upgrade to the free forever plan. Make sure you are logged in to your account and click the top right corner dropdown menu to access your subscription on the popup window. Click Purchase to access our plans page. 🙂
Since this is an upgrade (even though it’s free), you’ll need to enter payment details to enable it. Your card won’t be charged—the total remains $0/month. You can remove your payment info when checking out or anytime if you choose.
✅ ChatGPT 3.5 model + BYOK (Bring Your Own Key) via OpenAI
✅ 1 chatbot, 1 agent, 1 function call per agent
✅ Source training
✅ 25 free message credits/month (Unlimited with your own OpenAI API key)
For more, visit our pricing page.
We’ve packed enough into our Launch Free plan so you can build an AI chatbot that acts as your best sales or customer service rep, cutting costs and increasing conversions.
We are a Software-as-a-Service. This means that our app, along with data you upload to us, resides online. We use Amazon Web Services (AWS) for hosting. Our servers are located in Oregon, USA.
Yes. Our service currently uses OpenAI’s GPT-3.5 and GPT-4 large language models (LLMs) for generative AI functionality. The models are trained on publicly available data across the internet in over 95 languages, so Chatsistant also supports over 95 languages.
We support most text document formats (.pdf, .docx, .txt, .md, .tex, .csv, .xlsx, .xls). You can also provide an URL for automatic scraping of text content (this is not automatically updated on target website refresh), or input your own text directly.
GPT-o3-mini (16 K) is our current default model for every new chatbot you create. It’s the “LLM-smart” choice we’ve settled on because it delivers strong reasoning chops while keeping credit burn low—perfect for launching prototypes and scaling from there.
Here’s the rundown in our own words:
Default setting: GPT-o3-mini with a 16 000-token window
Why it’s the default:
Smart chain-of-thought reasoning
~40 % fewer message credits than GPT-4o
Packs enough context (~8 000 words) for most workflows without overkill
Free Trial: You start on GPT-o3-mini, and you can try any model in our roster (up to 128 K tokens) at no extra charge
Plan tiers: Your plan determines which models and context sizes you can lock in as you grow
Switching models:
Open your bot in the Agent Editor
Hit the Model dropdown
Pick GPT-4(o/4-mini), Claude, Gemini, DeepSeek—or stick with GPT-o3-mini
Save, and your bot fires up on the new engine instantly
For the nitty-gritty on credit rates, context limits, and plan comparisons, check out our Pricing & Models page.
At Chatsistant, our back-end is built for exceptional flexibility in large language model (LLM) selection, helping you stay at the forefront of AI performance and innovation. Many of the models we support now offer up to 1 million tokens of context, enabling both lightning-fast interactions and deep, multi-turn conversations across massive datasets. 🚀
OpenAI Models:
GPT-4.1, GPT-4.1 Mini, GPT-4.1 Nano – Our latest generation models support 1 million tokens, offering advanced reasoning, function calling, and long-context workflows.
GPT-4o & GPT-4o Mini – Multimodal, real-time capable, and ideal for conversational UX with up to 128k context.
GPT-o3 Mini & GPT-o1 – Cost-efficient options using up to 40% fewer credits than GPT-4o, best for scalable deployment and fallback logic.
Anthropic Claude Suite:
Claude 4.0 Opus – High-performance enterprise-grade model for legal, academic, and structured content.
Claude 4.0 Sonnet – Balanced speed and reasoning, excellent for summaries, documents, and automation.
Claude 3.5 Haiku – Lightweight model for quick tasks, available in both 4k and 128k versions.
Claude 3 Opus & Claude 3 Haiku – Trusted, flexible models for standard AI use cases.
Google Gemini Series:
Gemini 2.5 Pro Preview – Designed for reasoning, tool use, and long memory with full 1M token support.
Gemini 2.5 Flash (Thinking) – Lightweight and fast for summaries, bulk processing, and fast-reacting agents.
Gemini 1.5 Flash & Gemini 1.5 Pro – Still supported for mid-range workloads, offering up to 128k tokens.
DeepSeek Models:
DeepSeek V3 – Strong open-source model with fast output, RAG handling, and function calling.
DeepSeek R1 – Capable of complex enterprise workflows and structured automation.
Looking Ahead:
We continue to expand our LLM integrations with upcoming support for Meta LLaMA, Mistral, and other open-source models. This ensures you always have access to cutting-edge AI through a flexible, secure, and scalable framework. 🌟
See the next FAQ for a full list of supported LLMs or visit our pricing page for model-specific details.
Support for up to 1 million tokens
The latest LLM models (June 2025)
Cleaner structure
Clearer message for BYOK and token purchasing
At Chatsistant, our back-end is engineered for unmatched versatility in large language model integration. We support a premium lineup of LLMs—many with context capacity up to 1 million tokens—ready to handle everything from lightning-fast chat to deeply contextual workflows. Our platform includes native support for these models with the flexibility to bring your own key (BYOK) or purchase message credits and token usage directly through Chatsistant. You choose the model and usage method that fits your business.
OpenAI Models:
GPT-3.5 Turbo – The dependable, low-cost option for everyday general-purpose conversations.
GPT-4.1, GPT-4.1 Mini, GPT-4.1 Nano – High-performance models designed for advanced reasoning, function calling, and long-context automation.
GPT-4o & GPT-4o Mini – Fast, multimodal models ideal for real-time UX with up to 128k token context.
GPT-o3 Mini & GPT-o1 – Optimized for cost and scale, using fewer message credits while maintaining solid performance.
Anthropic Claude:
Claude 4.0 Opus – Designed for high-stakes enterprise reasoning and long-form content.
Claude 4.0 Sonnet – Excellent balance of speed, cost-efficiency, and output quality.
Claude 3.5 Haiku – Lightweight option available in 4k and 128k configurations for smaller, faster interactions.
Claude 3 Opus & Claude 3 Haiku – Solid and reliable models for general AI needs.
Google Gemini:
Gemini 2.5 Pro Preview – Capable of advanced context retention and tool use, supporting 1M tokens.
Gemini 2.5 Flash (Thinking) – Built for speed and scalable processing across fast-paced workflows.
Gemini 1.5 Pro & Gemini 1.5 Flash – Still supported for mid-range, cost-conscious tasks with 128k token capacity.
DeepSeek:
DeepSeek V3 – Powerful open-source model with support for function calling, semantic memory, and long-context use.
DeepSeek R1 – Designed for data-intensive, multi-agent logic and enterprise-grade workflows.
We’re actively expanding support for additional models such as Meta LLaMA and other fine-tuned open-source LLMs, ensuring your chatbot and automations always stay future-ready.
📌 For full model access and pricing options, visit our Pricing page.
Input-wise, you as the administrator, and your collaborators are the only ones to the design, customization, and data of your chatbot. Output-wise, you can share your chatbot for anyone to use.
Yes. You can customize your chatbot to have different personas via our template-guided prompt engineering.
You can embed an iframe or add a chat bubble to the bottom right of your website. To do that, create a chatbot and click “Embed on website”.
Feel free to email us at su*****@*********nt.com or reference our terms & conditions.
– Chatsistant Team
Ensuring your security and privacy is our top priority. We implement stringent measures to safeguard against data loss, unauthorized access, and misuse. Only authorized personnel, bound by confidentiality obligations, have access to your information.
Our systems undergo frequent testing and adhere to industry-leading standards, including the pursuit of ISO 27001 certification. We utilize encryption technology and comply with the Center for Internet Security’s Critical Security Controls. Additionally, we enforce specialized regulations and procedures, reinforced by comprehensive security training for our staff.
We use your data to serve you directly and to optimize our services from an engineering perspective. We will never sell your data.
At Chatsistant, we’re committed to maintaining the highest standards of information security. Currently, we’re undergoing rigorous testing to secure ISO 27001 certification in collaboration with our partners, ensuring compliance with industry-leading protocols.
Drawing from our extensive experience managing data in a SaaS environment, we’ve combined forces with our sister company FireLizard IT, Web, and AI Solutions at TheFireLizard.com. Over the past two years, FireLizard has pioneered AI technology and services since 2023. Throughout this journey, including part of the development of our AI platform alongside collaboration with leading partners in AI and security, we’ve maintained an impeccable record with zero data breaches. Our focus remains steadfast on upholding the utmost security measures to safeguard your information.
We do not train or fine-tune large language models (LLMs), and OpenAI has explicitly stated that it will not use data submitted by customers via its API endpoints to train or improve models. https://openai.com/policies/api-data-usage-policies
We use OpenAI’s GPT-3.5 and GPT-4 language models. This means that text content within your uploads may, in unmarked chunks, be submitted to OpenAI as context when generating a response. We will never send your documents in its complete original form to any other organization, including OpenAI or its partners.
To better explain the associated implications, we like to use the analogy of mixing bags of legos (chunks of documents) and sending only a mix of blocks to OpenAI at a time. In the right combination, your blocks will form your original document (like a lego castle). However, when sending to OpenAI, your blocks can come from different documents, and they are sent alongside thousands of blocks from other users. There is basically no way (and no material benefit) for OpenAI to attempt reconstructing your blocks and learn of your original documents’ content. OpenAI has also explicitly stated that it will not use data submitted by customers via its API endpoints to train or improve models (https://openai.com/policies/api-data-usage-policies).
We are a Software-as-a-Service. This means that our app, along with data you upload to us, resides online.
We use Amazon Web Services (AWS) for storage and computation. Our servers are located in Oregon, USA.
Our engineers have access to documents you upload. This is for debugging and user experience optimization purposes. All our engineers sign legal NDAs so they will not distribute your data in any way.
Your data is not end-to-end encrypted while stored within our servers. This is because encryption of your data precludes us from being able to extract any meaningful information from it, thereby disabling pretty much all our features. This is true for text analytics platforms in general, including OpenAI itself. Anyone that claims to have end-to-end encryption while offering you similar capabilities is lying.
Feel free to email us at le***@*********nt.com or reference our terms & conditions.
– Chatsistant Team
Watch two short videos back-to-back: First, learn about the key concerns and value of Chatsistant. Then, see our chatbot in action—collecting leads and managing interactions seamlessly. Click play to watch the first video and at the end click play again to watch the second video! 1 of 2 videos
