Every Ask Expert answer is measured, not asserted.

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GPAtlas Ask Expert · The Evidence Standard

Ask Expert searches published UK guidance and shows you where each point came from. Below are the figures from our most recent answers, how we got them, and how we catch the answers that fall short.

sources behind a typical answer (median)

of sources drawn from trusted UK guidance

of answers cite a national guideline body or Royal College

of our pre-release safety test runs passed every check

Where Ask Expert’s answers come from

How Ask Expert works differently from other AI tools

This is about how the tools are built. It is why the figures above are possible.

Other AI tools

You ask a question

It writes an answer from what it learned during training

It may then look for citations that fit the answer

Those citations may not exist, or may not be UK guidance

GPAtlas Ask Expert

You ask a question

It searches trusted UK guideline sources first

It writes the answer only from what it found, figures included

Every cited point links to the guidance it came from

Tested head to head against ChatGPT, Gemini and Claude

Checkable UK-guidance sources behind each answer (higher is better)

Sources per answer

Links valid

From UK guidance

Named a guideline

Any assistant can name a guideline. Ask Expert proves it.

How many sources sit behind an answer

Most answers draw on all eight sources Ask Expert gathers.

From our pilot to now, we keep measuring and fixing

These are the same three measures during our pilot study and after our most recent rebuild of how Ask Expert finds its sources. We show the pilot figures as well, so you can see what has changed.

Pilot study

After the rebuild

How we catch weak answers

Some answers will fall short. We look for them in three ways, and someone on our team looks at every one we find.

Before you see the answer

• Each dose, blood level or other measurement in the answer is checked against the sources Ask Expert found.
• If a figure is not in those sources, the answer is written again.
• If it is still not there, the figure is marked “not stated in the sources”, so you know to check it.
• If an answer starts deciding for the patient you described, it is rewritten to set out what the guidance says.

Every morning

• An automatic check reads every answer from the day before.
• It looks for answers built on fewer than five sources.
• It looks for answers with no source from a national guideline body, Royal College or specialist society.
• It looks for searches that drifted away from what the doctor asked.
• Anything it finds is emailed to our team.

When you tell us

• Every answer has a thumbs up and a thumbs down.
• A thumbs down, with the reason you pick, comes straight to our team.

What we do next

• We read the answer and work out why it fell short, for example a missed guideline, or the wrong part of a long one.
• We make each fix ourselves. Nothing changes Ask Expert automatically.
• Every fix goes through our pre-release safety tests before it goes live, and we run them again once it is live.

How we measured this

What the figures cover.

Source categories.

Live citations.

Pre-release safety tests.

What these figures are not.

They describe where our answers come from and how well they are attributed. They are not a measure of clinical accuracy, and nothing here is a claim that Ask Expert reaches a better clinical judgement than anyone or anything else. Ask Expert finds and presents published guidance; the clinical decision is always yours.