Unified Billing for Claude and GPT: One Invoice, One Dashboard, One API Key

If your team uses more than one AI model provider, you already know the pain:

• Separate accounts for OpenAI, Anthropic, Google, DeepSeek
• Separate billing dashboards
• Separate usage reports
• Separate API keys to manage and rotate
• No single view of total AI spend

For a solo developer, this is annoying. For a team of 10+, it is a real operational problem.

The cost of fragmented billing

It is not just about convenience. Fragmented billing creates real issues:

Budget visibility — When spend is split across 4 providers, nobody knows the real total until month-end reconciliation.

Cost allocation — Which project used how much? Which team member? You cannot answer this if usage is scattered.

Procurement complexity — Each provider means a separate vendor relationship, separate payment method, separate compliance review.

Overspending — Without a unified view, teams routinely overspend because they cannot see the full picture.

How an API gateway solves this

An AI API gateway like Crazyrouter consolidates everything:

from openai import OpenAI

# One client, one key, all models
client = OpenAI(
    api_key="your-crazyrouter-key",
    base_url="https://crazyrouter.com/v1"
)

# Claude
client.chat.completions.create(model="claude-sonnet-4.6", messages=[...])

# GPT
client.chat.completions.create(model="gpt-5.2", messages=[...])

# DeepSeek
client.chat.completions.create(model="deepseek-chat", messages=[...])

Same code structure. Same API key. Same billing dashboard.

What unified billing actually looks like

Per-model breakdown

Model	Requests	Spend
claude-sonnet-4.6	1,200	$18.50
gpt-5-mini	8,500	$4.20
gpt-5-nano	15,000	$1.80
deepseek-chat	3,200	$2.10
Total	27,900	$26.60

Per-member breakdown

Create separate API keys for each team member. Usage is automatically isolated:

Member	Spend	Primary model
Alice	$12.30	Claude Sonnet
Bob	$8.20	GPT-5 Mini
Carol	$6.10	DeepSeek

Usage export

Export detailed CSV records with:

• Timestamp
• Model used
• Input/output tokens
• Cost per request

Perfect for expense reports, project accounting, and budget reviews.

Cost savings on top of consolidation

Beyond the operational savings, gateway pricing is typically 40-55% below direct provider pricing:

Model	Direct pricing	Gateway pricing	Savings
Claude Sonnet 4.6	$3/$15 per 1M	~$1.65/$8.25	45%
GPT-5	$1.25/$10 per 1M	~$0.69/$5.50	45%
GPT-5 Nano	$0.05/$0.40	~$0.03/$0.22	45%

Pay-as-you-go. No monthly fee. No minimum spend.

Getting started

1. Sign up at crazyrouter.com
2. Create API keys for your team
3. Change base_url to https://crazyrouter.com/v1
4. Monitor usage from one dashboard

For enterprise procurement inquiries: [e-mail]