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Threadbox vs SiteGPT

SiteGPT does what its name says: it turns your website into a chatbot. Setup is quick, the widget is clean and it answers questions from your pages well.

Threadbox covers the same ground and then keeps going into actions, channels, escalation and analytics. This comparison is for teams who started with a website bot and now need a support agent.

  • UK/EU hosted
  • UK GDPR ready
  • Encrypted at rest and in transit
  • Companies House 00838986

Last updated

Verdict

TL;DR

SiteGPT is a simple way to put a Q&A bot on a website. Choose Threadbox when you need live-data lookups, channels beyond the web widget and a shared inbox.

Which should you choose?

Choose Threadbox if…

  • You need deterministic lookups and rich status widgets
  • You want Slack, WhatsApp and email alongside the web widget
  • UK/EU hosting and GBP billing matter

Choose SiteGPT if…

  • You run a content site or small business and want a simple website Q&A bot
  • Minimal setup matters more than integrations
  • The web widget is your only channel

At a glance

Feature comparison between Threadbox and SiteGPT
CapabilityThreadboxSiteGPT
Agent
Train on website, files and Q&A
Choice of OpenAI, Anthropic and Google modelsPartial
Custom actions that call your APIsLimited
Deterministic regex webhooks (no LLM in the loop)Not advertised
Guardrails: blocked topics, injection and leak checksBasic
Playground with compare mode and saved scenariosNot advertised
Channels & widgets
Website widget with streaming replies
Slack, WhatsApp and emailEmail from Starter, WhatsApp from Growth, Slack on BusinessWeb + some
Rich widgets: cards, buttons, forms, status cardsBasic
Lead capture with triggers and CSV export
Team
Shared inbox with human takeoverBasic
Escalation rules: sentiment, keywords, fallbacksBasic
Roles: owner, admin, agent, viewerPartial
Ask-your-data assistant (Backstage)Not advertised
Support desk
Threads with references, custom fields and statusesNot advertised
Response targets with business hoursNot advertised
Rules and skills-based routingNot advertised
Customer portal with guides and communityNot advertised
Phone, SMS and social channelsNot advertised
Business
UK/EU hosting by defaultNot stated
Pricing in GBP with VAT invoicesNot advertised
Per-resolution feesNoneNone
Free seats for viewers and contributorsNot advertised
Human support from the team who built itEmail

SiteGPT is a trademark of its respective owner. Comparison based on public documentation as of 19 October 2026. “Not advertised” means we could not find it in SiteGPT’s public material. Spotted something out of date? Tell us.

Pricing in GBP

Threadbox

GBP, excluding VAT, billed monthly

  • Free50 conversations a month£0/month
  • Starter500 conversations a month£29/month
  • Growth2,000 conversations a month£99/month
  • Business10,000 conversations a month£349/month

No per-resolution fees. Extra conversations in blocks of 100, up to a spend cap you set. Full pricing

SiteGPT

Published in USD, with an approximate GBP conversion

  • Starter$39/month billed yearly; up to 4k messages≈ £44/month$59/month
  • Growth$79/month billed yearly; 10k messages≈ £97/month$129/month
  • Scale$259/month billed yearly; 40k messages≈ £322/month$429/month

Source: SiteGPT pricing page, checked on . GBP converted at the 16 October 2026 rate.

How to switch

  1. 1Paste the same website URL
  2. 2Upload the same documents
  3. 3Add an action for your most common live-data question
  4. 4Swap the script tag
  5. 5Connect a second channel

Read the full SiteGPT alternative guide or browse all alternatives.

Knowledge: similar starting point

Both crawl your site, accept file uploads and answer from that content. Both let you customise the widget and capture leads. On knowledge alone they are close.

Doing things, not just saying things

Threadbox custom actions call your APIs mid-conversation and regex webhooks return exact data for order and reference numbers. Results render as status cards, buttons and forms. SiteGPT is focused on answering from content.

Try it on your own website

Paste your URL. We crawl it and hand you a working agent in minutes. Free plan, no card.

Channels and team

Threadbox brings Slack, WhatsApp and email into a shared inbox with rule-based escalation and human takeover. SiteGPT is primarily a web widget with basic hand-off.

Hosting and billing

Threadbox is UK/EU hosted and bills in GBP with VAT invoices. SiteGPT bills in USD.

FAQ

Frequently asked questions

No. The first step is identical: paste your URL. Actions and channels are optional extras you add when you need them.

Keep exploring

From website bot to support agent

Same starting point, far more headroom.

Build my agent free Book a demo
  • UK/EU hosted
  • UK GDPR ready
  • Encrypted at rest and in transit
  • Companies House 00838986