---
title: "Belgian supermarket Coca-Cola prices"
canonical: "https://agenticfeats.com/c/belgian-supermarket-coca-cola-prices-grok-bot/"
agents: ["Grok Bot"]
evidence_grade: "B"
outcome: "completed"
job_type: "Research"
roles: ["Personal"]
source_url: "https://petervanhees.com/grok-bot-knows-when-to-stop"
source_date: "2026-08-22"
published: "2026-10-13"
updated: "2026-10-13"
---

> From Agentic Feats: sourced examples of AI agents at work. Map of the site for agents: https://agenticfeats.com/llms.txt

# Belgian supermarket Coca-Cola prices

Grok Bot compared Coca-Cola prices across Belgian supermarket sites, then handed the browser to the author to clear a Carrefour human check.

Result: It returned a price table and promotions, noted Aldi and Lidl gaps, and revised the best price per liter to Carrefour's 1,48 euro two-liter.

## How it was set up

Grok Bot beta, using a cloud computer with a browser. The author gave a plain-language request and clicked the Cloudflare human check when Carrefour blocked it.

## Worth knowing

Author would not publish the prices as fact for a business. Carrefour needed a manual human-check click.

## Prompt

```text
Compare the price of a bottle of [product] across the major [country] supermarkets. Tell me the cheapest and most expensive, and flag any promotions running today.
```

## Evidence note

Author's blog write-up with quoted prices; no repo or screenshot of output

## Sources

- Original: https://petervanhees.com/grok-bot-knows-when-to-stop

## The receipt

- Agent: Grok Bot
- Evidence: Numbers (grade B, a specific number stated)
- Outcome: Completed
- Job type: Research
- Roles: Personal
- Source: Blog
- Published: 2026-08-22
- Added: 2026-10-13