AI tools that work with your own API key (BYOK)

Bring your own OpenAI, Claude, Gemini or OpenRouter key: you pay the provider directly at API prices, with no markup, and your prompts skip the middleman.

113 tools checked by hand, updated November 2026. What is BYOK?

OpenAI 104Anthropic 82Google Gemini 75Ollama 42OpenRouter 41DeepSeek 32All providers

All BYOK tools

113 tools, newest first
  • Applye

    Free desktop core · macOS · Open source

    Visit

    Open-source, local-first desktop app for job searching that scores roles and drafts tailored CVs with your own Anthropic or DeepSeek key.

    Works with:AnthropicDeepSeek

  • BayesChat

    Free (50 messages/month) + $14.99 one-time Pro · iOS

    Visit

    Private iOS AI chat client that uses your own API key with any OpenAI- or Anthropic-compatible provider, plus MCP tools, memory and presets.

    Works with:OpenAIAnthropicOllama

  • Conduit

    Free · Windows, macOS, Linux · Open source

    Visit

    Open-source desktop AI app for agents, research, writing and slides that runs on your own keys from 23 providers or local models.

    Works with:AnthropicOpenAIGoogle GeminixAI+12 more

  • Kallamo

    Free · Windows, macOS, Linux · Open source

    Visit

    Local-first, open-source studio for roleplay and long-form fiction that runs on your own OpenAI, Anthropic, Gemini or OpenRouter key or local models.

    Works with:OpenAIAnthropicGoogle GeminiGoogle Vertex AI+4 more

  • Loopcut

    Free with your own key; paid plans for hosted models · macOS, Windows · Open source

    Visit

    Open-source AI agent inside Blender that runs on your own Anthropic or OpenAI-compatible key, a ChatGPT plan or a local model.

    Works with:AnthropicOpenAIOllamaLM Studio

  • Nib

    CLI · Open source

    Visit

    Open-source terminal coding agent built for cheap models, working with your own DeepSeek, OpenAI, OpenRouter or Groq key or local Ollama.

    Works with:DeepSeekOpenAIOpenRouterGroq+1 more

  • QuickDictate

    Free for personal use; work use $19.99 one-time or $1.99/month per PC · Windows

    Visit

    Hotkey speech-to-text for Windows that types into any app using your own ElevenLabs, Deepgram, OpenAI or Google Cloud key, or offline models.

    Works with:ElevenLabsDeepgramOpenAI

  • SoloMD

    Free · macOS, Windows, Linux · Open source

    Visit

    Free, open-source Markdown editor for desktop and mobile with built-in AI tools that run on your own key from 14 providers.

    Works with:OpenAIAnthropicGoogle GeminixAI+7 more

  • Verenu

    Free · Windows, macOS · Open source

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    Free, open-source AI dictation for Windows and macOS that transcribes and cleans up your speech with your own provider key or a local model.

    Works with:GroqOpenAI

  • Wavefunction

    Free · macOS · Open source

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    Minimal open-source coding agent for Mac that runs parallel subagents on your own API keys, a ChatGPT sign-in or local models.

    Works with:AnthropicOpenAIGoogle GeminiOpenRouter+2 more

  • Phở Chat

    Free with BYOK, Pro $10/month, Founder lifetime $59 (limited seats) · Web

    Visit

    AI research workspace for clinicians and researchers that cites real PubMed and DOI sources and labels unsourced claims, with BYOK support for zero markup.

    Works with:OpenAIAnthropicGoogle GeminiDeepSeek+1 more

  • AirmailAI

    Web, Chrome extension · Open source

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    Open-source BYOK chat app for desktop Chromium browsers that sends your OpenAI, Anthropic, Gemini or OpenRouter key straight to the provider.

    Works with:OpenAIAnthropicGoogle GeminiOpenRouter

  • Bees

    Free to start · macOS, Windows, Linux · Open source

    Visit

    Open-source multi-agent platform that runs agent teams on your own computers with local Ollama models or your own Claude and OpenAI keys.

    Works with:OllamaAnthropicOpenAI

  • Kodus

    Free Community plan; Teams $10/developer/month · Web, Self-hosted · Open source

    Visit

    Open-source AI code review (a CodeRabbit alternative) that runs on your own OpenAI, Anthropic, Gemini or OpenAI-compatible model key with zero markup.

    Works with:OpenAIAnthropicGoogle Gemini

  • OpenDesign

    Free desktop app with BYOK; paid plans for hosted models · macOS, Windows · Open source

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    Open-source AI design agent workspace (a Claude Design alternative) that works with your own API key or your local coding agent, no account needed.

    Works with:AnthropicOpenAIAzure OpenAIGoogle Gemini+2 more

  • OpenDocBot

    Free for up to 30 users; commercial license above that

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    Client-side AI agent for Word, Excel and PowerPoint that runs on your own OpenAI, Anthropic, Gemini, DeepSeek or OpenRouter key, or a local Ollama model.

    Works with:OpenAIAnthropicGoogle GeminiDeepSeek+2 more

  • OxideTerm

    Free · macOS, Windows, Linux · Open source

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    Open-source SSH and remote-server workspace with a BYOK AI assistant that uses your OpenAI, Anthropic, Gemini, DeepSeek or Ollama key.

    Works with:OpenAIAnthropicGoogle GeminiDeepSeek+1 more

  • Shotluma

    Free · Web · Open source

    Visit

    Free, open-source App Store screenshot editor whose AI generation runs in the browser on your own Gemini, Qwen, OpenAI, Anthropic or xAI key.

    Works with:Google GeminiQwenOpenAIAnthropic+1 more

  • SideNote Pro

    30-day free trial, then $49 one-time · Windows

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    Docked AI assistant for Windows 10 and 11 that works with your own OpenAI, Anthropic, Gemini, DeepSeek or OpenRouter key, or local Ollama and LM Studio models.

    Works with:OpenAIOpenRouterAnthropicGoogle Gemini+3 more

  • Whytap

    Free · macOS · Open source

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    Free, open-source Mac notch app with voice input, an AI agent and notes that runs on your own OpenAI, Anthropic, OpenRouter, Deepgram or ElevenLabs keys.

    Works with:OpenAIAnthropicOpenRouterDeepgram+1 more

  • 5ire

    Free, open source · macOS, Windows, Linux · Open source

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    Free, open-source desktop AI assistant and MCP client that works with your own keys for OpenAI, Claude, Gemini, DeepSeek and more.

    Works with:OpenAIAzure OpenAIAnthropicGoogle Gemini+5 more

  • Aider

    Free, open source · CLI · Open source

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    AI pair programming in your terminal. Works with your own Anthropic, OpenAI, DeepSeek and other model keys.

    Works with:AnthropicOpenAIDeepSeek

  • AnythingLLM

    Free · macOS, Windows, Linux · Open source

    Visit

    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

  • big-AGI

    Free; Pro $9/month · Web · Open source

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    Multi-model AI workspace that runs, compares and merges answers from many providers using your own API keys.

    Works with:OpenAIAnthropicGoogle GeminixAI+14 more

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What is BYOK?

Bring your own key: the app uses an API key from your own AI provider account instead of its own.

Read the guide
  • No markup

    You pay OpenAI, Anthropic or Google their API price per token. Many BYOK apps are free or a one-time purchase.

  • Your data, your account

    Requests run under your own provider account and its data terms; many apps keep the key on your device.

  • Any model

    Switch between GPT, Claude, Gemini, DeepSeek or local models with Ollama without a new subscription.