C
CARTIEAI
PricingTry free
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C
CARTIEAI
PricingTry free
Back to home
Instant departmental chargebacks
● Live · wired into /api/llm-proxy

One shared model.
Five P&Ls.

You buy one dedicated Claude 4.5 or GPT-5 instance. Engineering sees one giant $50k bill. Finance asks: "Which department is using this?"

Pass a single header — X-Cartie-Tenant: marketing — on every proxy call. CARTIE auto-splits the shared bill into a per-department P&L for end-of-month chargebacks.
Or skip the header — use the Cartie SDK auto-injection →

One header. That's it.
# Just pass one header on every proxy call:
curl -X POST https://proxy.cartieai.com/v1/chat/completions \
  -H "Authorization: Bearer $CARTIE_KEY" \
  -H "X-Cartie-Tenant: marketing" \        # ← attribution
  -d '{"model":"gpt-5.2","messages":[...]}'

# That's it. CARTIE splits the shared bill into a per-department P&L.

No new SDK. No code changes beyond one header. Works with the OpenAI SDK, LangChain, LlamaIndex, and direct curl.

Live breakdown — month 2026-05

No attributed calls yet. Click Seed demo above to load a 60-day sample dataset.

No code changes
One HTTP header. Compatible with OpenAI SDK, LangChain, LlamaIndex, raw curl.
Instant chargebacks
End-of-month invoice to each department. No more "we paid $50k, no idea who used it."
Anomaly attribution
When token spend spikes, you immediately see WHICH department caused it.

Stop fighting over the shared bill.

14-day pilot · no card · we ship a proxy endpoint that already speaks the header and lights up your dashboard within minutes.

Start free pilot See all 24 engines

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