AI tools that work with your own OpenAI (ChatGPT) API key
An OpenAI API key gives apps access to GPT models, image generation, speech-to-text (Whisper) and text-to-speech, billed per token to your own OpenAI account. API usage is billed separately from a ChatGPT Plus or Pro subscription, so a BYOK app lets you pay only for what you use instead of another monthly plan.
85 tools, newest first
VisitAnythingLLM
Free · macOS, Windows, Linux · Open source
Private AI app for chatting with your documents. Runs local models or connects to OpenAI, Anthropic, Gemini and others with your key.
Works with:OpenAIAzure OpenAIAnthropicGoogle Gemini+9 more
VisitNanobrowser
Free, open source · Chrome extension · Open source
Open-source Chrome extension AI agent that browses for you. Keys stay in your browser and go only to their provider.
Works with:AnthropicOpenAIGoogle GeminiOpenRouter+4 more
VisitOpen WebUI
Free to self-host; enterprise plans · Self-hosted, Web · Open source
Self-hosted, open-source AI chat platform for Ollama and any OpenAI-compatible API, including Anthropic and Azure.
Works with:OllamaOpenAIAnthropicAzure OpenAI
VisitSillyTavern
Free, open source · Self-hosted · Open source
Open-source LLM frontend for power users, popular for role-play and creative writing. Connects to many APIs with your own keys.
Works with:OpenAIAnthropicGoogle GeminiOpenRouter+3 more
VisitJetBrains AI Assistant
Works with your own key; JetBrains AI plans optional · JetBrains
AI chat, code generation and completion inside JetBrains IDEs. Connect your own Anthropic, OpenAI or Gemini key, or local models.
Works with:AnthropicOpenAIGoogle GeminiGoogle Vertex AI+2 more
VisitNovelcrafter
From $4/month, 21-day free trial · Web
Novel-writing platform with a story codex and optional AI help through your own OpenAI, Anthropic, OpenRouter or local models.
Works with:OpenAIAnthropicGoogle GeminiMistral+3 more
VisitObsidian Copilot
Free plugin; paid Premium plan · macOS, Windows, Linux
AI agent plugin for Obsidian that searches, organizes and writes notes with your own API keys or local models.
Works with:OpenAIAnthropicGoogle GeminiOllama+1 more
Privacy-first journaling app for Mac, iPhone, and iPad that uses your own AI provider API key, or a fully local model, to surface patterns in your entries.
Works with:OpenAIAnthropicGoogle GeminiOllama
VisitIdea Forge Pro
Free, no account required · Web
A free browser-based tool that puts a startup idea through seven validation gates and tells you which one it fails, before you write a line of code.
Works with:OpenAIOpenRouterDeepSeekGroq
A calmer BYOK chat client for iPhone and iPad. Bring your own API keys, keep control of your models, and avoid another bloated AI workspace.
Works with:OpenAIAnthropicGoogle GeminiDeepSeek+1 more
GEO citation checker that audits whether Claude, ChatGPT, Perplexity, and Gemini recommend your brand using your own API keys.
Works with:AnthropicOpenAIPerplexityGoogle Gemini+1 more
VisitIntrascope
From $59/month · Web, Android
Secure AI workspace for teams that centralizes access to major AI models, shared context, usage tracking, and company-level BYOK controls.
Works with:OpenAIAnthropicGoogle GeminiDeepSeek+3 more
VisitUnboundChat
Free download; optional Pro subscription · macOS, Windows, Linux
Privacy-first AI chat app for Windows and Android with local storage, encrypted sync, and BYOK access to OpenRouter, OpenAI, and Google models.
Works with:OpenRouterOpenAIGoogle Gemini
VisitMultimodelChat
$2/month or $39 one-time · Web
Multi-model AI chat platform that lets users bring encrypted API keys for GPT, Claude, Gemini, Grok, OpenRouter, and custom endpoints.
Works with:OpenAIAnthropicGoogle GeminixAI+3 more
VisitLightjams LED Mapper
Windows
Professional LED mapping software with OpenAI integration that lets you bring your own API key at no extra cost.
Works with:OpenAI
VisitSnapNutrition AI
Free with your own key; Auto Mode $2.99/month · iOS
Free AI calorie tracker for iPhone, iPad, and Apple Watch. Bring your own Anthropic or OpenAI API key for food recognition — no subscription, no ads.
Works with:OpenAIAnthropic
VisitAiAssistWorks
Free Lite plan; paid from $3/month · Web
AI add-on for Google Sheets, Docs, and Slides that lets you use 100+ AI models with your own API keys. Fill thousands of rows, generate slides, and automate tasks without AI formulas.
Works with:OpenAIAnthropicGoogle GeminiOpenRouter+1 more
VisitOpenRouter
Pay as you go; BYOK usage has a small fee
Unified API and marketplace for top AI models (OpenAI, Anthropic, Google, Mistral, Cohere, Meta), with routing, transparent pricing, and flexible billing/BYOK options.
Works with:OpenAIAnthropicGoogle GeminiMistral+2 more
VisitBridgeApp AI
Web, iOS, Android
A unified platform offering real-time communication, task management, and AI-enhanced collaboration with BYOK security.
Works with:OpenAI
Enhance your research with AI tools for exploration, brainstorming, and in-depth analysis in seconds.
Works with:OpenAIGoogle GeminiAnthropic
VisitChatbox AI
Web, macOS, Windows
AI client app for enhancing productivity and creativity with document, image, and code interactions. Supports major platforms.
Works with:OpenAIAnthropicDeepSeekGoogle Gemini
Enhance customer interactions with customizable conversational AI voice and chat solutions.
Works with:OpenAIAzure OpenAIElevenLabs
Visit16x Prompt
Free (10 prompts/day); paid license · macOS, Windows, Linux
AI-driven tool for prompt creation and code generation leveraging models like Claude & DeepSeek, optimized for developers.
Works with:OpenAIAnthropicDeepSeek
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BossChat AI
From $89/month or $2,799 lifetime · Web
Enhance your user experience with BossChat AI, offering responsive chatbots using ChatGPT API integration.
Works with:OpenAI
VisitChatBotKit
Web, CLI
Create and deploy conversational AI bots and agents across various platforms, offering flexibility through its Bring Your Own Key (BYOK) feature.
Works with:OpenAIMistral
VisitChatsistant
Free plan; paid from $10/month · Web
No-code AI chatbot builder utilizing Retrieval-Augmented Generation (RAG) technology, enabling businesses to create and deploy conversational AI solutions efficiently.
Works with:OpenAI
VisitPrompt Selected
Free · Chrome extension
Free browser extension that allows users to run custom ChatGPT prompts on any selected text, enhancing tasks like grammar correction, translation, summarization, and explanation.
Works with:OpenAI
Customizable AI coding assistant that enhances developer productivity with context-aware code completion, in-IDE chat, and a secure, fine-tuned toolbox for self-hosted or cloud environments.
Works with:OpenAIHugging Face
Strategic Response Management (SRM) and RFP software platform that empowers organizations to efficiently manage bids, proposals, and company knowledge.
Works with:OpenAIAzure OpenAI
Chat interface that enhances interactions with large language models (LLMs) by providing a user-friendly frontend, supporting multiple AI models, and offering features like chat management and prompt libraries.
Works with:OpenAIAnthropicGoogle GeminiMistral+1 more
Tool that generates personalized comments to enhance conversations and build connections on LinkedIn.
Works with:OpenAI
Writing assistant that enhances productivity by integrating multiple AI models, offering features like AI image generation and GPT-4 Vision capabilities.
Works with:OpenAIMistralAnthropicGoogle Gemini+1 more
VisitZeroTrusted.ai
Web, Self-hosted
Firewall solutions to protect sensitive data during interactions with large language models (LLMs), ensuring privacy and security.
Works with:OpenAIMetaGroq
