Custom Gpt Builder
The best 50 Custom Gpt Builder AI tools - Free & Paid
Explore 50 AI for Custom Gpt Builder
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
100+ Custom GPTs Toolkit offers pre‑written templates and step‑by‑step guides for creating specialized ChatGPT assistants. It includes an instruction generator, copy‑paste models for marketing, business, content and operations, and Zapier integration to automate workflows quickly.
Freemium
- $15/mo
OpenGPT lets users build ChatGPT‑based applications instantly using a library of ready‑made AI tools for productivity, copywriting, coding, entertainment, and education. The platform offers prompt‑to‑code conversion, regex creation, and tools that refine prompts and transform requests into actionabl
Free
SitesGPT automatically generates responsive, mobile‑optimized websites from simple prompts. It handles layout, content, and image placement while allowing custom branding. Users can edit in real‑time on a secure, scalable cloud platform, enabling fast, code‑free site launches.
Free
editGPT is a Chrome extension that turns ChatGPT into a writing assistant. It provides real‑time grammar, style, and rewriting support in 80+ languages, preserves formatting, tracks changes, and manages revisions.
Free
- $10/mo
The CodeGPT IntelliJ IDE Plugin is an AI-driven coding tool that offers text completion, chat functionality, custom prompts and code actions, reviewing past conversations, restoring previous sessions, and privacy settings.
PageGPT generates custom landing pages from prompts, producing responsive designs, copy, and images with interactive effects. It auto‑places conversion elements and offers a white‑label API for integration, enabling iterative refinement without drag‑and‑drop editing.
Freemium
- $5/mo
CodeGPT plugs into VS Code and JetBrains IDEs, offering AI‑driven coding, refactoring, and debugging. It scans entire codebases, produces implementation plans, suggests incremental edits, and supports multiple models while keeping data local with BYOK and threat‑detection safeguards.
Freemium
- $8/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
GPTforwork.com is a powerful AI add-on for Google Sheets and Excel that automates workflows using natural language. It enables formula generation, data cleaning, content creation, and web-data extraction to speed up reporting, analysis, and research.
Free trial
The ChatGPT Prompt Generator from webutility.io is an online tool that streamlines prompt creation for engaging and insightful conversations with ChatGPT, allowing users to define their desired action, focus, subject, and context.
Free
BacklinkGPT is an AI-powered tool that simplifies link building through one-click prospecting, contact info discovery, personalized outreach messages, and efficient campaign management for improved Google page ranking.
Freemium
- $49.99/mo
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
GPT Workspace enhances productivity within Google Workspace by automating tasks such as email composition, content generation, and presentation creation. It offers smart features for data analysis in Sheets and writing assistance in Docs while ensuring user data privacy.
Freemium
- $9/mo
GlobalGPT is a comprehensive AI service hub providing over 100 specialized agents for tasks like content creation, social media management, academic assistance, and software development, including advanced features like text-to-video conversion and personalized planning tools.
Free
PhotoGPT is an AI image generation tool that creates personalized, realistic images for various themes and occasions. It offers customization options for headshots and special event visuals, enhanced with AI prompts and high-definition upscaling.
Free trial
gpt-reader.com is a community-driven AI development platform that enables open-source teams to manage projects through proposal voting, AI-assisted code reviews, and integrated CI/CD workflows.
Freemium
BypassGPT rewrites AI‑generated text into natural, human‑like language, bypassing detection systems. One‑click humanizer preserves meaning, adds conversational tone, supports multiple languages, and works online on all devices for quick, confidential editing.
Paid
GPT‑trainer creates voice and text AI agents for phone, email, SMS, web chat, and social media. No‑code builder, optional API, multi‑LLM support, document training, automated workflows, real‑time escalation, CRM sync, unified inbox, EU‑hosted, SOC II/ISO 27001/GDPR compliant.
Paid
- $8.49/mo
GPT Translator offers real-time translation for text, documents, and websites in 95+ languages. It supports various file formats, preserves formatting, includes automatic language detection, and features batch processing for efficient multilingual content management.
Freemium
SlidesGPT converts blog posts, PDFs, or custom prompts into polished slide decks in seconds. It auto‑formats slides, generates visuals, and exports to PowerPoint, Google Slides, or PDF. Developers can integrate bulk creation through an API.
Freemium
DevKit combines 30 mini-devtools, an AI assistant (DevGPT), and integrates with 100+ public APIs & P5.js. It accelerates code testing, API queries, generation, art creation, and simplifies app/website management for enhanced developer productivity.
Freemium
- $10
Longshot AI's FactGPT feature generates user-sourced and factually accurate content for current events, opinions, product reviews, comparisons and more, with personalization options and access to citations.
Freemium
- $19/mo
GPT‑Prompter is a Chrome extension that brings GPT‑3/4 and ChatGPT API directly into any webpage. It highlights selected text for instant explanations, supports pre‑made and custom prompts, and streamlines drafting for researchers, writers, and developers.
Free
gptbox is a Windows application that integrates ChatGPT into the taskbar, offering AI-powered assistance for composing emails, drafting documents, and generating code snippets, streamlining productivity for developers, writers, and busy professionals.
Free
PortfolioGPT builds customized investment portfolios using GPT‑4.1‑mini based on user inputs such as amount, risk tolerance, horizon, age, goals, and asset preferences. It offers instant recommendations for stocks, ETFs, real estate, and crypto, with backtesting and market data.
Freemium
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
ChartGPT is an AI tool that facilitates easy creation and customization of multiple chart types for enhanced data visualization. It provides versatility in displaying data through various charts, ensuring clear and captivating presentations for diverse projects.
Freemium
MyGPT lets users build custom ChatGPT‑style bots inside Telegram, choosing from GPT‑4o, GPT‑3.5‑turbo, or Claude 3‑5‑sonnet. It adds DALL·E 3 image generation, Whisper transcription, GPT‑4 Vision image understanding, and text‑to‑speech, with quick setup and open‑source scripts.
Paid
- $19.99
AdGPT automatically generates static, video, and UGC‑style ads from Shopify, WooCommerce, or XML feeds. It produces platform‑specific copy, voiceovers, avatars, and overlays, resizes creatives, and uploads ads to Meta, Google, and TikTok accounts in one click.
Subscription
- $29/mo
Discover a wide range of AI tools provided by Mojju custom GPTs. A variety of custom GPTs helping with different business and productivity workflows.
My GPT Wizard is an AI writing and content generation partner that utilizes AI-driven creativity to meet all your content creation needs.
Free trial
FormBuilderGPT translates natural‑language prompts into ready‑to‑publish forms in English, Spanish, or Portuguese. It auto‑generates structured templates for events, rentals, service requests, legal authorizations, and surveys, supporting images, documents, date/time fields to streamline data collec
Freemium
BrowseGPT automates web browsing with a Chrome extension that uses GPT‑3 to interpret commands like CLICK, ENTER_TEXT, and NAVIGATE, logging actions and reasons for easy correction. It saves time for shoppers, researchers, and repetitive tasks.
Free
PhotoGPT.io is a free, browser-based AI photo editor that enables fast online enhancements like generative fill, relighting, and restoration. It supports batch editing and multiple export formats, ideal for social media creators and small businesses needing quick, professional photo fixes.
Free
GPTExcel automates spreadsheet tasks in Excel, Google Sheets, LibreOffice, and Airtable. It generates formulas, scripts, SQL, regex, builds pivot tables, charts, and reports, offers conversational data queries, and OCR table conversion across 50+ languages.
Freemium
VisualGPT is an AI image generator and editor, offering features like background removal, photo retouching, and interior design visualization. It supports models such as Nano Banana and Flux, facilitating bulk processing and social media content creation.
Free trial
ZeroGPT is a comprehensive AI tool suite offering advanced features for content detection, text refinement, and translation, including AI detection, plagiarism checking, humanization, and summarization.
Freemium
- $7.99/mo
SecureGPT is a free platform for security testing OpenAI ChatGPT plugins.
Free
GPT for Slides is a Google Slides add‑on that builds complete decks from a topic, URL, PDF, or text in under a minute, adding AI‑generated images, data visuals, quizzes, and multilingual translation, saving design time.
Freemium
- $8/mo
GPTImager is an AI image generator that creates high-fidelity visuals from text prompts with industry-leading multilingual text accuracy (99%+) and true-to-life color reproduction. It supports 4K upscaling, style fusion, version comparison, and plain-text layered editing, while producing watermark-f
Freemium
- $19.90/mo
SecGPT uses AI to analyze cybersecurity reports and provide insights.
Usage based
BotGPT is a data‑driven chatbot that embeds in minutes, pulling content from PDFs or website crawls to create a virtual assistant. It integrates with messaging platforms, offers 24/7 support, and preserves privacy by storing no personal data.
Freemium
- $2.99/mo