82% Verified Savings

82% verified savings. Free until it saves.

Drop-in AI cost optimisation. Swap one URL and CARDIAC-PURR routes every request to the cheapest model that passes your quality threshold — in real time, automatically, with a full audit trail. No model training, fine-tuning, or training data required — it works on day one.

Get Free Access → Enterprise Platform

python · one line changed

# Before — direct to provider
client = openai.OpenAI(api_key="sk-...")

# After — through CARDIAC-PURR (drop-in)
client = openai.OpenAI(
    api_key="cardiac-vk-...",  ← your key
    base_url="https://api.cardiac-purr.com/v1",
)
# Everything else stays the same.

82% Real-time Cost Savings
vs Always-Large

$0 Fee if Savings = Zero
Pure savings-share

1 line Integration Cost
OpenAI SDK drop-in

14 days Shadow Period
$0 · Zero Risk

How It Works

Three steps to intelligent routing.

Start with zero risk. See your projected savings. Then flip the switch.

Shadow Period

14 Days Free Observation

CARDIAC-PURR observes every request and logs what it would route to — without touching your traffic. You receive a Shadow Report: model-by-model breakdown with projected savings anchored to your provider invoices. Zero cost. Zero risk.

Active Routing

One Line. Live on Day 15.

Change your base_url to our endpoint. Routing activates. Every request classified in real time — complexity, latency sensitivity, output type — routed to the cheapest model that passes your quality threshold.

Savings-Share

Pay Only What We Save You

Monthly Model Delta Invoice: every substitution listed line by line, verifiable against your provider bills. Fee = MIN(savings × tiered share, cap). You keep at least 75–82% of savings. Free Tier: zero fee for ≤15K requests/month.

Pricing

Free until we save you money.

No platform fee. No per-request charge. Zero fee if verified savings are zero.

For Developers

Free Tier

$0_{/month · forever}

Structural zero — not a trial. Free forever for developers and early-stage teams under the threshold.

Up to 15K requests / month
Full routing intelligence
Shadow period included
Model Delta Invoice
No credit card required

Most Common

For Growing Teams

Savings-Share

25%_{of verified savings}

You pay a declining share of what we save you. Nothing if savings are zero. Rate drops as your savings grow.

Unlimited requests
25% → 18% declining share
$100K monthly hard cap
You keep ≥75% of savings
Full MDI audit trail

For Hyperscale

Enterprise

18%_{at $600K+ savings}

Negotiated terms, dedicated support, SOC 2 Type I, SLA guarantees, and custom integration.

Volume-based rate negotiation
$150K / $200K monthly cap tiers
SOC 2 Type I roadmap
Dedicated onboarding
See enterprise platform →

Tier Schedule

Pricing tier comparison
Monthly Verified Savings	CARDIAC-PURR Share	You Keep	Monthly Cap
FREE ≤15K req/month	0%	100%	—
$0 – $75K	25%	75%	$100K
$75K – $250K	22%	78%	$100K
$250K – $600K	20%	80%	$150K
$600K+	18%	82%	$200K

No per-request fee. No platform fee. Zero fee if verified savings = $0. Tiers applied automatically based on verified monthly savings from your Model Delta Invoice.

Get Access

Fill the form and confirm your email. API key delivered to your inbox in minutes. No credit card required.

Full Name *

Please enter your full name.

Company / Organisation

Email *

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Primary Use Case *

Please select your primary use case.

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You must agree to the Terms of Service to continue.

No model training required No credit card required Email verified Key delivered by email GDPR compliant

Check Your Inbox

We've sent a confirmation link to . Click it to verify your email — your API key arrives immediately after.

Didn't get it? Resend the confirmation →

Once verified — swap these two values

base_url="https://api.cardiac-purr.com/v1"
api_key="cardiac-vk-..."  ← in your confirmation email

What happens after you register

Confirm your email

Click the verification link we send you. This step keeps free-tier access tied to a real organisation.

API key emailed instantly

Your cardiac-vk-xxx key lands in your inbox within seconds of confirmation.

14-day shadow period begins

We observe your traffic silently — no routing, no charges. You'll receive a Shadow Report with projected savings.

Routing activates on Day 15

Intelligent routing goes live. First Model Delta Invoice issued at end of first full calendar month.

Validated Performance

82%

Real-time Savings

vs always-large model routing

87%

Batch Savings

On bulk classification workloads

SM 74% / MED 16% / LG 8%

Routing Distribution

Intelligent model selection

99.9%

Uptime SLA

Enterprise-grade availability

Routing accuracy validated on a 100-item gold price sentiment classification benchmark (dataset v60, 15 June 2026) across three provider integrations: Anthropic, OpenAI, and Google. Results: 100% classification accuracy across all three providers (n=100 per provider; 95% confidence interval lower bound: 96.3%). Zero errors recorded. Cost savings versus single-model baseline: 78.8% (Anthropic), 84.9% (OpenAI), 83.5% (Google). Routing distribution: approximately 75% small-tier, 17% medium-tier, 8% large-tier. Azure OpenAI integration excluded from published results pending resolution of provider connectivity issues. Full benchmark methodology and per-item results available in technical documentation upon request.

EU AI Act — Conformity Assessment Completed: 25 June 2026

The CARDIAC-PURR Intelligence Platform — LLM Router has undergone formal risk classification under Regulation (EU) 2024/1689 (EU AI Act). A written Article 6 classification determination has been completed on 25 June 2026 and incorporated into the Article 18 technical documentation.

Article 14 — Human Oversight

Human oversight under Article 14 of Regulation (EU) 2024/1689 requires that natural persons can monitor, interpret, and override automated routing decisions. The CARDIAC-PURR LLM Router provides authorised operators with a real-time operator dashboard and OpenTelemetry-compatible telemetry pipeline through which routing decisions, model selections, provider substitutions, and governance checks can be monitored per request. Operators can review full provenance metadata for every response, identify routing anomalies, and intervene or halt execution through the platform API. A structured audit trail of all routing decisions and operator interventions is maintained automatically.

Automated fallback chains are a separate reliability feature and do not satisfy Article 14 human oversight obligations.

Article 50 transparency obligations apply from 2 August 2026. High-risk AI obligations for standalone Annex III systems apply from 2 December 2027, as amended by the Digital Omnibus on AI (provisional political agreement, 7 May 2026). Enterprises deploying in regulated sectors should contact us regarding compliance documentation.