LetAnAgentAll scenariosCompare energy deals: which AI agent to use
Researched, hands-on test pending
Our top pick: Perplexity (as a research helper). This write-up is based on research from public sources; we haven't tested it hands-on yet and will update this page when we do. Prices were checked on 31 October 2026 and can change.
Top pick: Perplexity
- Official site: www.perplexity.ai
- What it does: Explains your tariff, the price cap and fixed versus variable deals in plain English, with sources you can check.
- Rough UK price: Free; Pro £20/month in the iPhone app
- Free tier: Yes.
- UK caveats: No AI assistant we found switches your supplier for you. For actual quotes, use an Ofgem-accredited comparison site. For context: Ofgem's cap for 1 Oct to 31 Dec 2026 is £1,723 a year for a typical dual-fuel Direct Debit household.
- Don't use it if you are: Anyone hoping for a one-click switch.
Alternative: ChatGPT
- Official site: chatgpt.com
- What it does: Paste in your bill and ask what your unit rate and standing charge mean, and whether a fix beats the cap.
- Rough UK price: Free; Go £7/month; Plus £20/month
- Free tier: Yes.
- UK caveats: Take out account numbers before you paste a bill. It may not know this quarter's cap unless it searches.
- Don't use it if you are: People who need regulated advice.
Sources
- https://www.ofgem.gov.uk/press-release/energy-price-cap-will-rise-4-october-2026
- https://www.ofgem.gov.uk/news/changes-energy-price-cap-between-1-october-and-31-december-2026
- https://www.perplexity.ai/en-GB/hub/pricing
No paid placements. Spotted something out of date? Email hello@letanagent.com.