Semantic routing
for production AI.
Route AI queries with 20× faster latency, 95.4% accuracy, and 33× less memory. Rust core. Python-first API. Enterprise governance built in.
pip install stratarouterfrom stratarouter import Router, Route # Initialize with any embedding modelrouter = Router(encoder="all-MiniLM-L6-v2") # Define intelligent routesrouter.add(Route( id="billing", description="Billing and payment questions", keywords=["invoice", "billing", "refund"])) router.build_index() # O(n log n) HNSW # Route queries — blazing fastresult = router.route("I need my April invoice") print(result.route_id) # → "billing"print(result.confidence) # → 0.94print(result.latency_ms) # → 1.8ms ⚡
Independently verified benchmarks
The numbers that define the category
AWS c5.4xlarge · 1M queries · 100-route index · all-MiniLM-L6-v2 · January 2026
Purpose-built for
production AI systems
From raw routing throughput to enterprise governance — StrataRouter covers the complete infrastructure stack for intelligent AI applications.
Blazing Fast Routing
8.7ms P99 with 18,000 req/s throughput. SIMD-accelerated cosine similarity via Rust HNSW index. Zero-overhead Python bindings via PyO3.
Hybrid Scoring Engine
Combines dense semantic embeddings (HNSW), sparse BM25 keyword scoring, and rule-based patterns. Isotonic regression calibrates confidence for reliable decisions.
Rust Core, Python API
The routing engine is Rust — maximum performance, memory safety, zero GC pauses. A clean Pythonic API means zero friction for ML teams. Cargo crate also ships.
Deep Framework Support
First-class integrations for LangChain, LangGraph, CrewAI, AutoGen, OpenAI Assistants, and Google Vertex AI. Drop-in in 5 lines of code.
Semantic Caching
85%+ cache hit rate cuts LLM cost by 70–80%. Mandatory gate checks prevent incorrect cache reuse. Deterministic blake3 hash keys for reproducible results.
TCFP Workflow Engine
Runtime executes Typed Compositional Flow Protocol workflows with full isolation. Batch deduplication, state snapshots, and checkpoint recovery built in.
Enterprise Governance
Multi-agent consensus with quorum voting. SHA-256 hash chains create immutable audit trails. SOC 2, HIPAA, ISO 27001 compliant out of the box.
Multi-Tenancy & RBAC
Complete tenant isolation with per-tenant quotas, cost caps, and model allowlists. Role-based and attribute-based access control. Idempotency prevents duplicate calls.
Full Observability
Prometheus metrics, OpenTelemetry 2.0 distributed tracing, structured logging. Health endpoints, cost tracking, and latency monitoring out of the box.
Multi-Model Routing
Route to GPT-5, Claude 4.5, Gemini 3.1, or local models based on complexity, cost, latency, and capability. Reduce inference spend by up to 60%.
Production Deployment
Production Docker images, Helm charts for Kubernetes, docker-compose for local. Freemium resource limits (4 vCPU / 24 GB / 10 concurrent) enforced automatically.
95.8% Test Coverage
Google-standard code quality, 55 tests, 95.8% coverage. Full CI/CD, automated benchmarks, and property-based testing ensure correctness in production.
Three layers. One platform.
Start with the free Core, add production execution with Runtime, scale to enterprise governance — each layer independently deployable.
StrataRouter Core
Python Library · MIT License
StrataRouter Runtime
Execution Engine · Rust/Axum
StrataRouter Enterprise
Governance Platform · Rust
Infrastructure
LLM Providers
Query arrives
Your application sends a natural-language query to the router.
Hybrid scoring
Core scores via dense embeddings + BM25 + rules in under 2ms.
Routed & executed
Runtime executes the matched handler with caching and observability.
The performance gap is undeniable
Independently verified benchmarks across leading semantic routing libraries. StrataRouter wins on every dimension that matters in production.
| Metric | StrataRouter | semantic-router | LlamaIndex | Improvement |
|---|---|---|---|---|
| P99 Latency | 8.7ms | 178ms | 245ms | 20–28× |
| Throughput | 18,000/s | 450/s | 380/s | 40–47× |
| Memory | 64 MB | 2,100 MB | 3,200 MB | 33–50× |
| Accuracy | 95.4% | 84.7% | 82.3% | +10–13 pts |
| Cold Start | < 50ms | 1,200ms | 2,000ms | 24–40× |
The routing layer for every AI app
From chatbots to enterprise orchestration, StrataRouter adapts to your exact workflow.
from stratarouter import Router, Route router = Router(encoder="all-MiniLM-L6-v2") # Specialized agent routesrouter.add(Route("billing", description="Payment and invoices", examples=["refund", "invoice", "charge"])) router.add(Route("technical", description="Product bugs and errors", examples=["crash", "error", "not working"])) router.add(Route("sales", description="Pricing and upgrades", examples=["pricing", "plan", "upgrade"])) router.build_index() # Intelligent routing in real-timeresult = router.route("My payment failed last night")# → Route: billing | Confidence: 0.94 | 1.8ms ⚡
Works with your entire AI stack
Native integrations for every major framework, LLM provider, and infrastructure tool. Drop in StrataRouter without rewriting your pipeline.
pip install stratarouterPython 3.8+ · MIT License · Rust 1.70+ · Docker available
From builders who use it
in production
Engineering leaders and AI architects choose StrataRouter for their most demanding workloads.
StrataRouter cut our routing latency from 180ms to under 9ms. Our AI orchestration layer went from a bottleneck to invisible infrastructure. Best routing decision we made all year.
The semantic caching alone saved us $15K/month in OpenAI costs. With 85%+ cache hit rates, the ROI was positive in the first week. This is what production AI infrastructure should look like.
We handle 50K+ routing decisions per day flawlessly. The LangGraph integration was 5 lines of code. Accuracy improvement from 84% to 95%+ reduced escalations by 40%.
After evaluating semantic-router, LlamaIndex, and building our own — StrataRouter won on every metric. The Rust core is genuinely game-changing for production latency requirements.
The Enterprise governance layer gave us SOC 2 readiness for our AI workflows in a week. Multi-tenancy, audit trails, and RBAC — everything we needed, production-tested from day one.
We replaced a complex custom router with StrataRouter and reduced routing-related incidents to zero. The BM25 + dense hybrid handles edge cases our old system consistently missed.
Route smarter.
Ship faster.
Join leading AI teams using StrataRouter to power intelligent, production-grade routing. Up and running in 5 minutes.
pip install stratarouter