BuildingTechAlternatives/OpenThorn

OpenThorn

AI website builder — bring your own API key, pay your provider directly.

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OpenThorn is a BYOK (bring-your-own-key) AI app builder. Describe what you want in plain language; the AI agent writes the code, previews it live in-browser, and deploys a working website to Netlify. The platform is free — you only pay your AI provider's raw per-token rates, with no subscription and no markup.

Why OpenThorn?

Most AI builders charge $25–50/month for credits that resell API access at a markup. OpenThorn flips that model: you connect your own key from any of 17 providers and pay them directly. The platform itself is free.

| | OpenThorn | Others | |---|---|---| | Platform cost | Free | $25–50+/month | | AI billing | Pay your provider directly | Pay the platform in credits | | Model choice | Any of 17 providers | Platform-selected | | Code export | Always, no paywall | Often paywalled | | API key ownership | Yours | Platform-managed |

Features

• 17 AI providers — OpenAI, Anthropic, Google Gemini, DeepSeek, Mistral, Groq, Together AI, xAI, Cohere, Perplexity, OpenRouter, Ollama, Fireworks AI, Cerebras, Azure OpenAI, Amazon Bedrock, NVIDIA NIM
• In-browser preview — generated code bundled with esbuild-wasm and rendered live; no server round-trip, no build wait
• One-click Netlify deploy — from preview to public URL without leaving the app
• Full code export — download the generated source at any point; no proprietary format, no paywall
• Multi-provider fallback — if one provider hits a rate limit, the agent switches automatically and continues mid-run
• Real-time collaboration — multiplayer presence via Supabase Realtime
• Encrypted key storage — provider API keys are encrypted at rest with AES-256-GCM; raw keys never r