Lumen ยท Buyer resources
What is deep research ai tool?
An AI answer engine with an agent mode that plans multi-step work and runs connectors, with a model picker spanning free open models and paid GPT, Claude, Gemini and Grok tiers. The live site positions it as a cheaper alternative to Perplexity and Comet, with plans from Free to a $179 Power tier.
A deep-research tool decomposes a question, gathers sources and combines findings into a cited response. Review whether citations support the associated claims and whether important counterexamples were considered. Lumen combines an answer engine with an agent mode for multi-step work.
What to verify before buying
- Citations that support each answer
- Model access and usage limits
- Permissions for connector actions
- Cost per usable answer on the same tasks
Published product pricing
Free: $0 per month; Lite: $9 per month; Pro: $19 per month; Team per seat: $29 per month; Max: $89 per month; Power: $179 per month; Max annual: $890 per year; Power annual: $1,790 per year