Questions, bugs, or ideas? We're here to help.
LemonSugar Ai is a smart LLM router. Instead of subscribing to ChatGPT, Claude, and Gemini separately, you send prompts to LemonSugar Ai and we automatically route each one to the cheapest model that can handle it — across OpenAI, Anthropic, Google, and open-source alternatives. Our users save 40–70% on average compared to using frontier models for everything.
LemonSugar Ai analyzes your prompt to estimate complexity, then picks the most cost-effective model from our pool that can reliably answer it. Simple questions go to fast, cheap models. Complex reasoning tasks go to stronger (but still optimized) models. You can override this per task type in your Settings.
Yes. We don't train on your conversations. Messages are routed through OpenRouter (our infrastructure provider) which also does not train on API traffic. You can also enable 'Privacy mode' in Settings to exclude OpenAI entirely, or use open-source only if you prefer.
Credits are prepaid tokens that let you use LemonSugar Ai without managing separate API keys for every provider. One credit balance works across all models. We buy in bulk and pass the savings to you. If you prefer, you can add your own API keys in Settings and LemonSugar Ai will route directly to providers, skipping our credit system entirely.
If you're on the Free plan, you'll need to wait for your monthly refill or upgrade. If you're on a paid plan, you can buy credit packs anytime from the Pricing page. You can also set a monthly budget cap in Settings so LemonSugar Ai pauses paid routing once you hit your limit.
Absolutely. Go to Settings → API keys and add keys for OpenAI, Anthropic, Google, or OpenRouter. LemonSugar Ai will route directly to those providers using your keys, bypassing our credit system and saving you the OpenRouter markup fee. This is ideal for power users spending $100+/month.
LemonSugar Ai supports 40+ models across OpenAI (GPT-4o, GPT-5), Anthropic (Claude Haiku, Sonnet, Opus), Google (Gemini Flash, Pro), and leading open-source models (Llama, Qwen, DeepSeek, Mistral). See the full list on our Models page.
Go to Settings → Plan & credits and tap 'Cancel plan.' Your premium access continues until the end of your current billing period. You can resubscribe anytime.