Stop paying Opus prices
for "what's 2+2"
Lumen API is one OpenAI-compatible endpoint that reads each request, predicts how hard it is, and routes it to the cheapest model that can answer it correctly — Groq, Cerebras, Together, Fireworks, OpenAI, Anthropic and more. Easy prompts go to $0.001 models. Hard prompts go to frontier. You change one base URL.
See pricing — free to start Join the API waitlistPer-request difficulty engine
Every request is scored before it's routed: length, reasoning depth, tool-use, code complexity, long-context. Easy lookups never touch a frontier model. We've been routing tens of millions of our own calls this way for months.
Cheapest-acceptable, not cheapest
The point isn't "always use the cheap model" — it's the cheapest model that still gets it right. Lumen has a quality floor per task class and cascades up automatically when a tier can't meet it.
8 vetted providers, zero China/Russia
Groq, Cerebras, Together.ai, Fireworks, OpenAI, Anthropic, Replicate, Perplexity. Provider down? Lumen fails over mid-flight. Geopolitically-filtered cascade — no DeepSeek, Qwen, Ernie, Yandex, GigaChat in the path. Ever.
Every call audited + costed
Each response tells you which model answered, the latency, and the dollars saved versus calling frontier directly. Hash-chained audit log. Per-key budget caps. Export to your warehouse.
Built by: the Elite AI Empire team that runs Lumen, our consumer answer engine at ask.eliteaiempire.com. Lumen API is the exact routing brain behind it — the same difficulty-classifier and cascade that lets us serve frontier-quality answers at a fraction of single-vendor cost. We dogfood it across 40+ production apps.
Who it's for
SaaS founders spending $500+/mo on OpenAI/Anthropic; AI app builders tired of hand-wiring fallbacks; teams who want one bill, one SDK, and automatic cost control without quality regressions.
Why not just OpenRouter?
OpenRouter is a marketplace — you still pick the model. Lumen decides for you, per request, with a quality floor. See the full comparison →
The pitch in one line
"80% of your prompts could run on a $0.001 model and you'd never notice. Lumen finds them automatically and pockets the difference for you."
API early-access waitlist
Lumen API public launch summer 2026. Early-access list = founding-developer pricing locked (20% off forever) + higher free-tier limits + priority key issuance.