LLMs are built for conversation, not application logic. Leio replaces slow 1,500ms LLM calls with sub-millisecond, typed, mathematically guaranteed decisions over formal ontologies. Input-only metering at $0.042/1M tokens — output decisions are 100% free.
Select an enterprise ontology, pick an observation or type your own, and watch Leio evaluate formal lattices in sub-millisecond real time.
Evaluating decision...
Select an enterprise mission below. Watch the autonomous agent ingest raw unstructured feeds, evaluate formal Leio ontology lattices in < 1ms, trigger specialized deterministic tools, and emit production-grade artifacts.
Loading scenario input...
// Standardized artifact will stream here upon agent execution...
92% of production software operations need an instant, deterministic decision — not a slow, probabilistic chat paragraph.
A ⊓ B = ⊥) mathematically guarantees mutually exclusive root-cause routing in under 1ms.
Most AI fatigue stems from trying to force stochastic conversational chatbots into deterministic software infrastructure. Here is exactly where Leio begins and ends.
P(A) ≤ P(B) everywhere.uvx leio-decision) pre-filtering context before calling costly LLMs.A ⊓ B = ⊥) for regulatory compliance.Standard LLMs burn compute pretending to be conversationalists. Leio is a dedicated mathematical decision engine.
A standalone 189 KB WebAssembly binary running compiled Rust code directly in client memory or Cloudflare Workers. Zero network latency, zero per-decision cloud costs, and complete offline capability for edge devices.
Category-theoretic exclusion kernels guarantee that mutually exclusive branches are algebraically zeroed (A ⊓ B = ⊥). Subsumption monotonicity guarantees that child classes never exceed parent probabilities.
You only pay for input tokens at $0.042 per 1M. Returned decision classifications, probabilities, lineage breadcrumbs, and axiom verification objects are 100% free with zero output token tax.
BM25 IDF candidate routing extracts localized sub-lattices on the fly, allowing Leio to scale gracefully to massive enterprise product catalogs, medical terminologies, and supply chain graphs.
Drop directly into Claude Desktop, Cursor, LangChain, or custom autonomous loops with one command:
uvx leio-decision. Gives any agent a deterministic, high-speed System 1 reflex.
| Capability | Generative LLMs (OpenAI, Anthropic) | SLMs (Llama 3 8B, Mistral) | Leio System 1 Engine |
|---|---|---|---|
| Primary Design Target | Open-ended text & conversation | Local conversational generation | Deterministic application decisions |
| Inference Latency | 1,200 ms – 2,500 ms | 400 ms – 800 ms | < 1 ms (< 1 μs in WASM) |
| Pricing (Input) | $5.00 – $15.00 / 1M | Self-hosted GPU hardware | $0.042 / 1M input tokens |
| Pricing (Output) | $15.00 – $30.00 / 1M | VRAM & compute bound | 100% Free & Unmetered |
| Hallucination Risk | High (Must parse with regex/Pydantic) | High (Schema deviations) | Zero (Strictly bounded by ontology) |
| Mathematical Guarantees | None (Heuristic sampling) | None | Subsumption monotonicity & disjointness |
| Client-Side Execution | No (API only) | Heavy (Requires 8GB+ VRAM) | Yes (189 KB standalone WASM binary) |
| Air-Gapped Deployment | Impossible (Cloud only) | Complex cluster setup | Yes (Zero dependencies, pure binary) |
Engineered for regulated industries with zero-trust network perimeters and stringent data sovereignty requirements.
Payloads are evaluated entirely in volatile memory and instantly discarded. Zero input text or state telemetry is ever written to disk, stored in databases, or used for model training.
Deploy Leio within dedicated AWS VPCs, Google Cloud VPCs, or Microsoft Azure VNets. Connect seamlessly via AWS PrivateLink with zero data traversing the public internet.
Zero external phone-home telemetry or cloud dependencies. Deploy as a standalone 189 KB WebAssembly binary, a statically linked Linux executable, or air-gapped Kubernetes Helm charts.
Unlike probabilistic black-box LLMs, every decision emits formal mathematical proof artifacts (subsumption monotonicity and disjointness bounds) for internal risk and regulatory compliance audits.
See how much your infrastructure saves by switching high-frequency classification, routing, and triage calls from LLMs to Leio.
Here is what technical leaders observe when they shift high-frequency decisions from slow cloud LLMs to Leio.
“We replaced 80+ tool prompt descriptions in our LangChain agents with Leio's MCP server. Agent step latency plummeted from 2,400ms down to 180ms, and our monthly OpenAI token bill dropped by over $18,000.”
“In warehouse fulfillment at 4 m/s, you have an 8ms budget to divert parcels. Cloud LLM APIs are physically impossible. Running Leio's 189 KB WebAssembly binary on edge PLCs solved automated cold-chain routing with zero conveyor stoppages.”
“In hospital EHR triage, HIPAA and mathematical consistency are non-negotiable. With Leio's proven subsumption monotonicity, our medical audit board verified that an angiosarcoma verdict can never contradict parent cancer classifications.”
Start for free in your browser, scale with our hosted edge runtime, or deploy dedicated air-gapped VPCs.
pip install leio-decision)Clear, direct answers for senior engineers, enterprise architects, and engineering leadership.
uvx leio-decision or npx leio-decision to expose Leio as a standard Model Context Protocol (MCP) tool. For microservices and backend systems, use our native Python SDK (pip install leio-decision) or call the high-throughput hosted edge HTTP endpoint at POST /api/systemone.