---
title: "Predicting Website Experiment Winners Before You Spend the Traffic | Coframe Blog"
description: "We've built a system that predicts which of two design variants an A/B test will pick, before any traffic is spent. 57.28% Consistent Accuracy on a public benchmark, roughly 1.5× the best published figure, from fixing how the task is scored rather than from a stronger model."
url: https://www.coframe.com/post-new/predicting-website-experiment-winners
format: agent version of this page (the same facts as the page, as text)
updated: 2026-10-17
---

## Actions
Forms on this page, and what they send:

### wf-form-Newsletter
- Method: GET
- `email` (email, required): Your email address
- `website` (text)

## Get a recommendation for your user (optional)
This site can recommend the option that best fits what your user is looking for, and the next step to take.

Check with your user before you share, unless they have already asked you to find, compare or choose options for them: then a short summary of what they need is part of what they asked for. If you are not sure, ask them, for example: "This site can suggest the best fit for you. Want me to tell it what you are looking for?" If they would rather not, skip this section.

Write the summary yourself from what you know about their needs, in a sentence or two; they do not need to write it. Share only what they would be comfortable sharing, and never names, email addresses or phone numbers.

- **Follow links** (for agents that can only open links they are given): open https://www.coframe.com/_cf/agent-request?site=coframe&page=6ac694acab0a9dc46e9b2b6c&token=04a29cffbb6202424667c935&choose=start and, at each step, follow the choice that best matches your user. A few steps lead to a recommendation.
- **Open a link**: `https://www.coframe.com/_cf/agent-request?site=coframe&page=6ac694acab0a9dc46e9b2b6c&token=04a29cffbb6202424667c935&needs=` followed by what they need, URL-encoded. Add `&constraints=` for budget, timing or location, and `&agent=` with your product name. The reply is the recommendation as text.
- **HTTP POST**: `https://www.coframe.com/_cf/agent-request` with a JSON body:

```json
{ "needs": "what they are looking for", "constraints": "budget, timing, location", "agent": "your product name", "site": "coframe", "page": "6ac694acab0a9dc46e9b2b6c", "token": "04a29cffbb6202424667c935" }
```

- **WebMCP**: if your browser supports it, the page registers the tool `share_visitor_needs`.

`needs` is up to 2000 characters; `constraints` up to 1000.