Custom AI Agent Builder
The best 50 Custom AI Agent Builder tools - Free & Paid
Explore 50 AI for Custom AI Agent Builder
AI Agent is a web app that allows users to create customized AI agents to perform specific tasks and achieve goals.
Freemium
PC Builder AI helps users customize and build PCs by generating tailored configurations based on budget and preferences. The tool offers options for gaming and workstations and allows for component comparison to maximize investment value.
Subscription
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
Character AI is an advanced AI chatbot web application that offers human-like text responses, allows for user-developed characters with NSFW filters, and enables conversations with fictional, historical, and celebrity figures.
Freemium
Agenthost lets users build AI agents for customer support, sales, marketing, and education without coding. One‑click integrations connect to 2,000+ apps, while custom actions, file uploads, voice, and fine‑tuning extend agent capabilities. Deep analytics and team collaboration improve performance.
Free trial
CustomGPT.ai is a no‑code platform that builds AI agents from existing documents, sites, and knowledge bases. It supports 1,400+ file types, 100+ integrations, and 92 languages, offering secure, citation‑enabled, context‑aware responses for customer support and internal knowledge search.
Subscription
AgentX is a multi-agent AI platform for building, training, and deploying conversational agents using a no-code visual builder or developer tools, supporting multiple LLMs, RAG knowledge connectors, omnichannel deployment, integrations, analytics, voice, and on-premise options.
Free
ChatBotBuilderAI lets users design and deploy custom chatbots and GPTs across websites, social media, email, and voice. It integrates with thousands of apps, supports personalization, multi‑channel delivery, and provides analytics for engagement and conversion insights.
Subscription
- $49/mo
SupportAgent.ai is an AI tool that creates automated draft replies for support agents by learning from previous replies and adapting to the writing style.
Free trial
- $29/mo
AI App Builder turns plain‑language app ideas into functional web prototypes. Drop screenshots, iterate design and code in real time, then deploy instantly. Built‑in templates cover portfolios, e‑commerce, and events, with export, hosting, and version‑control integration.
Freemium
Kode No‑Code AI Agents lets organizations deploy custom agents that integrate into existing tools. A visual builder creates isolated workflows without code; agents browse, research, update records, and a meta‑agent layer orchestrates tasks across departments with full audit visibility.
Freemium
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
Quickchat AI lets teams create and deploy chatbots for support, sales, lead qualification, and internal assistance. It combines Retrieval‑Augmented Generation with reranking to keep answers current, offers modular knowledge building, workflow design, analytics, GDPR‑compliant data control, and API i
Freemium
Apply, Co. builds custom AI agents paired with human experts to automate industry workflows—patient triage, fraud detection, contract review, product recommendation—offering 24/7 scalability, zero‑error design, and seamless integration with cloud, database, and API services.
Paid
Creators' AI is a weekly Substack newsletter delivering curated AI industry updates, tool releases, and practical case studies for developers, creators, and entrepreneurs. It offers guides, adoption scorecards, searchable archives, community discussions, and exclusive cheat sheets.
Freemium
Ever Efficient AI offers customized AI automation services including JavaScript and Python development, chatbots, data integration, browser extensions, software builds, and more.
Subscription
AI Survey Generator drafts surveys within seconds, offering diverse question types, adaptive and skip logic, and score calculators. Distribute via email, web, app, WhatsApp, SMS, or link, and integrate with major platforms. Mobile‑optimized, multilingual, it compiles data into actionable reports.
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
Resumebuild.AI is an AI-powered tool that assists in crafting exceptional resumes. It enhances content, focuses on relevant keywords, and provides instant feedback for better optimization, ultimately boosting your chances of securing desired job opportunities.
Free trial
- $29
Donovan provides a no‑code Agent Factory that builds and connects AI agents for mission‑critical government and defense workflows. It evaluates model performance, runs on classified, air‑gapped Kubernetes environments, and offers traceable reasoning with defense‑aligned guardrails.
Freemium
Solo AI helps small business owners, freelancers, and nonprofits build responsive websites without coding. Users input prompts and AI generates layouts, imagery, copy, and SEO keywords. Features include free hosting, analytics integration, booking tools, payment links, collaboration, and mobile‑frie
Freemium
The platform provides a suite of tools to create and manage an AI assistant with natural language processing, machine learning, and conversational AI features that can automate tasks like scheduling meetings and answering customer queries.
Freemium
- $40/mo
Agency Swarm is an AI-powered framework that enables users to create and manage collaborative agents with specialized roles. It offers customizable agent functions, efficient communication flows, and state management, making it ideal for automating workflows and AI-driven decision-making.
Free
Crawl AI is a web-based platform that allows users to create custom AI assistants with minimal coding. It features web scraping, data source integration, and adjustable settings for tailoring responses, enhancing utility in tasks like customer support and content generation.
Freemium
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
Agentz automates real‑time customer engagement across voice, SMS, web, and social channels. Its drag‑and‑drop flow builder and self‑learning responses handle missed calls, webforms, and inquiries without coding, and it integrates with existing databases and systems.
Paid
- $29
Relay.app creates AI agents that automate tasks across apps like Google Workspace, Airtable, Slack, and Asana. Users name an agent, assign skills, design workflows via a visual editor, and refine performance through feedback loops.
Free
- $9/mo
Scout is an AI‑agent platform that builds, launches, and optimizes sales agents for meeting prep, RFP drafting, and sales engineering. It integrates with Salesforce, Outreach, Slack, Notion, Google Suite, and pulls from documentation and custom databases for rapid, no‑code deployment.
Free
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
TrainMyAI builds private AI chatbots using retrieval‑augmented generation. It offers web, WhatsApp, and JSON‑RPC interfaces, multiple knowledge bases, content‑optimizing rewrites, linked citations, admin permissions, audit logs, and full UI and parameter customization, deployable on‑prem or cloud.
Paid
Autohive enables teams to create AI agents for automating repetitive tasks without coding. Users can efficiently manage workflows, collaborate in real-time, and streamline operations across various platforms, enhancing productivity and allowing focus on high-impact activities.
Free trial
BotsCrew delivers end‑to‑end conversational AI agents built on GPT‑4o, Llama 3, or RAG. Users choose pre‑built or custom agents, proceed through discovery, rapid prototyping, and deployment, with real‑time UI, unlimited integrations, and compliance support to automate queries and reduce support cost
Freemium
Maxclaw is a cloud-hosted AI agent built on minimax m2.5, offering one‑click deployment, persistent long‑term memory (200k+ tokens), persona customization, messaging integrations (Telegram/Discord/Slack), and tooling for browsing, code execution, file analysis and automation.
Freemium
Omnichannel AI agents trained on FAQs, transcripts, CRM notes and SOPs automate voice, email, chat and SMS support, sales and scheduling for SMBs, preserving brand tone, integrating with CRM/websites and improving response times and lead capture.
- $299/mo
Coursebox is an AI course creator tool that generates draft course structure and content in seconds, offers a drag-and-drop builder, and features such as quizzes and videos to make e-learning interactive and engaging.
Freemium
vly.ai is a full‑stack web builder that embeds AI engines (Claude, Codex, Gemini) into its IDE, offering real‑time REST queries, one‑click publishing, custom domains, visual backend dashboards, and thousands of prebuilt integrations with CI/version control for rapid, production‑ready prototypes.
Subscription
- $3/mo
Frederick AI offers integrated coding, browser, and background agents that generate web apps from natural language, automate website interactions, schedule repetitive tasks, and share context in a workspace—helping startup teams prototype quickly and run continuous workflows.
Freemium
- $16/mo
YourGPT builds and deploys AI agents across chat, email, and voice. It supports GPT‑4, Claude, Gemini, DeepSeek, trains on PDFs, CSVs, Markdown, and integrates with Intercom, Slack, Shopify, Twilio, Zapier. SOC 2, GDPR, SSO, it automates FAQs, appointments, orders, invoices, leads.
Subscription
HybridAI enables users to create intelligent chatbots and virtual agents with emotional awareness for various business objectives. It features API integration, automated workflows, and real-time human takeover, enhancing customer engagement across multiple sectors while ensuring data sovereignty.
Free trial
Command AI delivers AI‑powered in‑app assistance, offering product tours, nudges, surveys, and checklists. Its Copilot agent provides real‑time walkthroughs and co‑browsing, while API integration ensures context‑aware responses. The platform supports mobile/web, integrates with 24+ tools, and priori
Freemium
Voice AI platform that builds conversational agents in five clicks, automating support, sales, and billing calls. It integrates natively with CRMs and databases for real‑time actions, supports multi‑OS softphones, and records transcriptions for audits.
Free