Frequently Asked Questions

League of LLMs is a workspace for comparing AI answers. Write one question, choose the models you want, and read their responses side by side. When the judge returns a valid decision, Best marks the strongest answer. You can save the chat or share a read-only comparison link.

Models can reach different conclusions, notice different details, and explain the same idea in different ways. Sending the same question to several models makes those differences easy to see. You can then choose the answer that best fits the task instead of relying on one model by habit.

You can attach images, PDFs, text, audio, and video. Plans range from 1 file per question on Free to 60 on Champion, with a plan maximum of 500 MB per file. Each model may accept fewer files or a smaller size. The arena checks those limits, sends the original file when the model can read it, and tells you when it uses extracted text instead.

The judge compares every answer with your question. It checks relevance and accuracy first, then completeness, clarity, and usefulness. If it returns a valid decision, it marks one answer Best and explains why. If judging fails, no winner is shown, and every answer remains available for you to review.

No. You can submit 10 trial prompts in the current browser before creating an account. A Free account provides daily usage, 5 models, file uploads, and 30 days of saved history. Paid plans add every supported model and higher limits. A short walkthrough explains the arena on your first visit.

League of LLMs currently supports OpenAI, Anthropic, Kimi, Groq, GLM, Cohere, Mistral, Hugging Face, Gemini, and Meta. We add new providers as they become available and production-ready. Check the Changelog page to see the latest additions.

When you run a comparison, your prompt and any attached files are sent to the AI providers you selected so they can answer. If you are signed in, prompts, responses, and file details may also be saved in your chat history so you can reopen or share a comparison. We do not sell your data or use your prompts to train our own models. For full details, see the Privacy Policy.

You can try 10 prompts without an account, and the Free plan provides basic daily usage with 5 models. Scout, Arena, and Champion subscriptions add all models, more daily usage, and larger file limits. Every plan supports up to 6 comparison lanes. The Pricing page keeps that promise clear.