BYOK List

BYOK Writing Tools

Writing tools with BYOK support help you draft, edit, transcribe, and rewrite content using your own API keys. Whether you need long-form articles, email assistance, or voice-to-text, bringing your own key means lower per-word costs, access to the latest models, and no content stored on third-party servers.

9 tools, newest first

  • Kerlig

    $49 one-time (1 Mac) · macOS

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    Mac app that adds AI to any app for emails, replies and proofreading, using 350+ models with your own API keys.

    Works with:OpenAIAnthropicGoogle GeminiGroq+7 more

  • Novelcrafter

    From $4/month, 21-day free trial · Web

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    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

  • Obsidian Copilot

    Free plugin; paid Premium plan · macOS, Windows, Linux

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    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

  • InkProse

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    Business writing copilot for freelancers that generates proposals, SOWs, scope docs, and client emails from rough briefs. BYOK with $49 one-time pricing.

    Works with:OpenAIAnthropicGoogle Gemini

  • Scribelet

    Free; optional Pro · Web, iOS

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    AI-first knowledge management system that verifies facts, discovers note connections, and keeps your knowledge base current. BYOK with OpenAI, Anthropic, or Google Gemini.

    Works with:OpenAIAnthropicGoogle Gemini

  • Finch

    $49 one-time license · Windows, macOS

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    Desktop voice-to-text app for Windows with AI text cleanup. Buy once for $49, bring your own API keys for transcription and processing with no subscription fees.

    Works with:OpenAIAnthropicGroqDeepgram+1 more

  • Cuppa

    From $99/month (billed annually) · Web

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    Content creation platform that enables users to generate optimized articles efficiently, offering flexibility through its Bring Your Own Keys (BYOK) feature.

    Works with:OpenAIAnthropic

  • Writesmart

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    Tool that generates personalized comments to enhance conversations and build connections on LinkedIn.

    Works with:OpenAI

  • WritingMate

    Web

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    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