
Connect AI Model A/B Testing Cost Engine to your AI
Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Know the true cost and viability of every model change.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Your AI does the work. We keep it safe and sound.
No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.
Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

Each Connector runs inside its own sealed environment.
Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.
One switch stops every agent. Instantly.
One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.
Spending limits that pause instead of surprise.
Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.
Three controls, built into the layer your AI connects through.
Curated set · 4 capabilities
We ship only the actions that matter.
01-04
4 capabilities in this set.
Part of 4 available through AI Model A/B Testing Cost Engine.
- 01
Calculate experiment roi
Evaluates the economic viability of an AI model change
- 02
Calculate experiment cost
Calculates the specific financial cost for a single experiment based on its unique parameters
- 03
Estimate time to significance
Predicts how long an experiment must run before the results are statistically valid
- 04
Aggregate concurrent costs
Sums the total infrastructure burden of all running A/B tests
Real work
What teams actually run
Budgeting for New Features
Before launching a new model, run a calculation to estimate the total compute cost over the next quarter.
Optimizing Test Duration
If a test is running too long, use the time-to-significance capability to see if it's hitting its statistical goal early.
Comparing Model Versions
Compare two model versions by calculating the ROI for each, allowing you to pick the most profitable option.
Scaling Infrastructure
When planning for growth, aggregate costs helps you know how much compute power you'll need when traffic increases.
One connector, every AI
AI Model A/B Testing Cost Engine works with the most popular AI clients.
These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put AI Model A/B Testing Cost Engine to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.
Observed, not estimated
873ms average. Fast in production.
AI Model A/B Testing Cost Engine is checked daily against the live service.
- Fastest day
- 750ms
- Slowest day
- 1169ms
- 14-day trend
- Slowing+25%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 4 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of AI Model A/B Testing Cost Engine, so you can see the experience inside your AI.
It does not authenticate your account with AI Model A/B Testing Cost Engine. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
AI Model A/B Testing Cost Engine Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_SPvHr2phXmDbWE30TZ3LOeINjMXsN6q4JEmBlTc9/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — AI Model A/B Testing Cost Engine capabilities are ready to use.
{
"mcpServers": {
"ai-model-ab-testing-cost-engine-mcp": {
"url": "https://edge.vinkius.com/vk_preview_SPvHr2phXmDbWE30TZ3LOeINjMXsN6q4JEmBlTc9/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
Guided setup for Claude? Set up AI Model A/B Testing Cost Engine in Claude and other AIs
Who it's for
Built for the work AI Model A/B Testing Cost Engine owners hand off.
This MCP is essential for anyone managing AI infrastructure or product development. If you're responsible for the budget or the performance metrics of your models, this capability gives you the hard numbers you need. It translates complex machine learning experiments into clear financial and statistical reports.
- 01
Product Manager
Use it to justify feature rollouts by proving the expected ROI of a model update.
- 02
Data Scientist
Use it to determine the minimum necessary run time for a test to ensure the results are statistically sound.
- 03
FinOps Engineer
Use it to track and forecast the combined infrastructure cost of multiple parallel experiments.
FAQ
Questions AI Model A/B Testing Cost Engine owners ask.
- 01
Is this MCP for general cost tracking, or just A/B testing?
It focuses specifically on the financial and temporal aspects of AI model experimentation. It calculates costs, ROI, and the time needed to achieve statistical validity for A/B tests.
- 02
What kind of data does it need to calculate costs?
It requires specific parameters like infrastructure costs per hour, traffic split percentages, and the number of running experiments. The more detail you provide, the more accurate the cost estimate will be.
- 03
Can I use this to compare multiple models?
Yes. You can calculate the ROI for multiple models and aggregate the costs of running them concurrently, helping you choose the most profitable path.
- 04
Does it just tell me the cost, or does it help me decide if the test is worth it?
It does both. By calculating the ROI and the time to significance, it gives you the full financial picture, letting you decide if the expected value outweighs the compute cost.
- 05
What is 'statistical significance' in this context?
It's the point where the results of your A/B test are reliable and not due to random chance. This MCP predicts how long you must run the test to reach that reliable point.
- 06
How does this capability account for multiple experiments?
You can use aggregate_concurrent_costs to sum the total infrastructure burden of all active tests, ensuring you account for the cumulative load on your compute and data stack.
- 07
Can I estimate the duration of my experiment?
Yes, the estimate_time_to_significance capability predicts the number of days required to reach a statistical threshold based on your daily traffic and required statistical power.
- 08
How is the ROI calculated?
The calculate_experiment_roi capability evaluates the ratio of the expected monetary lift to the total cost of the experiment, providing the ROI percentage and break-even days.
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Connect AI Model A/B Testing Cost Engine to Claude, Cursor, ChatGPT & more
