One API key, every model, control in the request path. For every team and every autonomous agent.
An agent multiplies LLM calls a thousandfold: routed intelligently, secured in the request path, and spent on purpose. Below, the five failures that make autonomy hard to authorize, ranked by what actually hurts, each with the coverage that made it famous, and exactly what closes it.
Pay as you go from $5 · the platform fee on top · no subscription
Why is budget the whole point?
AI cost is unbounded by default.
Software used to be license-based and predictable. AI is metered by the token. One runaway agent loop can outspend an entire department before finance ever sees a dashboard.
Surprise AI bill
Cancelled projects
Runaway loops
Yahoo Finance · Finance · May 2026
Client Accidentally Burns $500 Million on Claude AI in One Month
An unnamed corporate client accidentally ran up a massive Claude AI bill in a single month after rolling out agentic AI without usage limits.
Spend is governed before the call, not reconciled after.
Pre-flight budgets enforce hard spending caps per org, team, and key. Credits reserve upfront and settle on actual usage. Calls over budget return a hard 402 with zero overruns.
Budget enforcement
blocking nowReserve credits before the call · settle the exact cost after. The over-cap request never runs.
Why one API key?
The model you bet on rarely stays the best.
Betting your product on a single provider SDK creates massive migration debt when better models ship. Every committed key is another credential leak risk.
Leaked credentials
YoY leak increase
Keys exposed
IT Pro · Security · 2025
GitHub is awash with leaked AI company secrets
Security sweeps reveal developers are regularly committing high-privilege provider API credentials directly into public GitHub repositories.
All your models behind one key. Switching is a string.
One unified nRouter key gates the entire catalog with zero BYOK. Swapping models from OpenAI to Anthropic or Gemini is a single-line configuration change.
Before · 5 keys, 5 bills
nRouter
sk-nrouter-·····7f3a
Single invoice
After · every model
Why is safety inline?
One paste leaks customer data.
Banning AI fails as teams route around blocks using personal accounts. Stopping data exfiltration requires inline inspection on every request.
DLP violations
YoY jump in leaks
Prompts with PII
American Banker · Banking · May 2026
Community bank discloses shadow-AI cybersecurity incident
A community bank parent disclosed a cybersecurity breach after an employee uploaded unredacted customer names, DOBs, and SSNs.
Guardrails run inline on every request.
Content moderation, PII redaction, and prompt injection defense execute directly in the request path with sub-50ms overhead and zero shadow bypass routes.
Guardrails
in path · every callEnforced centrally at the gateway path. Overrides configure key > team > org.
Why one endpoint?
One model is a single point of failure.
Wiring apps directly to one model makes its downtime yours. Resilient teams fail over to alternate models and providers in milliseconds.
ChatGPT downtime
Cost increase
Unexpected charges
9to5Mac · Tech · Dec 2025
ChatGPT is down for users after a routing misconfiguration
A single routing misconfiguration took down ChatGPT for 15 hours, highlighting the vulnerability of depending on a single LLM deployment.
Failover and routing at one in-path seam.
Smart routing balances traffic based on latency, cost, and health. Fallback chains switch to backup models instantly on error with zero app changes.
Smart routing
active failovernRouter Gateway
Evaluating target...
claude-opus
gpt-5
Configured Smart Router chains evaluate targets inline and advance past unhealthy providers without an application redeploy.
Why a platform fee?
Nobody knows why the bill was $4,800.
Spread across separate provider consoles without attribution, tracing who spent what or identifying infinite agent loops is impossible.
Provider consoles
Surprise AI bill
To reconcile
Medium · Engineering · 2026
Our AI bill was $4,800 last month. Nobody knew why.
Engineering teams struggle with unexplained monthly API bills due to lack of per-key or per-team cost attribution across consoles.
One honest console. Real provider cost, attributed.
Exact provider cost returned in response headers and attributed to every key, team, and organization with atomic credit settlement.
Cost & usage
displayed == ledgerSpend · MTD
$0.2732
provider-reported
Avg / request
$0.000045
72 requests
Projected
$0.3628
month-end
Spend by model
One key. One bill. One bar of control over every model your team touches.
Whoever's asking “why,” the answer holds up.
The team adopting it
“Will this actually simplify our stack?”
One key replaces every provider account, contract, and invoice. Finance gets one bill with hard budgets; engineering gets every model behind two lines of code. Nothing to self-host, nothing to stitch.
- One key for every model
- Hard budgets per key, team & org
- Guardrails + PII redaction inline
- Configured failover & smart routing
- One invoice, real provider cost
- Team roles, keys & request logs
The investor
“Where is the durable moat?”
A platform fee on managed governance (multi-tenancy, billing, RBAC, budgets, guardrails) that compounds as model count grows. We win precisely because switching models is free for the customer and sticky for the platform.
- Flat 4% platform fee, not a token markup
- Stickier as model count grows
- Governance is the lock-in, not the model
The builder just looking
“How fast can I ship?”
Sign up, grab a key, point the OpenAI SDK at our base URL. You are calling every model in under a minute — no provider keys, no infrastructure. Pay as you go from $5.
- OpenAI-compatible — keep your SDK
- Load $5 in credits to start
- Live in under a minute
AI is becoming autonomous; control must become automatic.
The next decade of software will be operated by fleets of autonomous agents, each calling models thousands of times an hour and spending real money by design. When autonomous systems do real work for every company on earth, their calls flow through nRouter.
One key. Every model.
Start in under a minute.
Bring the OpenAI SDK you already use, point it at our base URL, and route across providers with budgets and guardrails on, from the very first request.
Pay as you go from $5 · the platform fee on top · no subscription