Ask anything. Get a cited answer.

Live web search synthesized by AI — follow-up conversations, deep research, efficient by design.

Free · fast Pro · deeper 🔬 Deep research

Free-tier LLM routing + self-hosted search. Near-zero cost per query — no token burn.

Ask follow-ups in the same thread — Lumen remembers context and resolves "it"/"that".

Pro: a multi-step agentic flow decomposes your question, runs multiple searches, then synthesizes.