NewSlack, WhatsApp and email channels
Alternative

The CustomGPT alternative that also resolves tickets

CustomGPT users look elsewhere when the bot needs to do more than answer: check an order, book a slot, escalate an angry customer to a person.

Threadbox keeps the grounded answers and adds the support workflow around them.

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

Last updated

What changes

Four things you get that CustomGPT does not offer

Actions and webhooks

Call your systems and render live data as widgets.

Shared inbox and escalation

Rule-based hand-off with takeover and notes.

Every channel

Web, Slack, WhatsApp and email in one inbox.

UK/EU hosting

GBP billing and a DPA on request.

Migration

How to migrate from CustomGPT

Most teams finish in an afternoon. Actions take longest; email us their definitions and we will set them up with you.

  1. 1

    Paste the same URLs and upload the same documents

  2. 2

    Add Q&A pairs for edge cases

  3. 3

    Create an action for your top live-data question

  4. 4

    Embed the widget or connect Slack

  5. 5

    Set escalation rules and invite your team

Import from CustomGPT Get migration help
Before you switch, check
  • Your content is public or exportable
  • You know which live-data questions matter most
  • Someone can list your API endpoints for actions
  • Your compliance team wants UK/EU hosting

Want the full feature grid? Threadbox vs CustomGPT

Side by side

Feature comparison between Threadbox and CustomGPT
CapabilityThreadboxCustomGPT
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 checks
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 + API
Rich widgets: cards, buttons, forms, status cardsBasic
Lead capture with triggers and CSV export
Team
Shared inbox with human takeoverNot advertised
Escalation rules: sentiment, keywords, fallbacksNot advertised
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

Why teams leave CustomGPT

The most common reasons we hear from teams switching from CustomGPT:

  • Limited live-data actions and no deterministic webhook layer
  • Channel coverage centred on web and API
  • USD billing, with UK hosting not advertised

Who should stay on CustomGPT

Organisations that need an accurate internal or public knowledge assistant over large document sets.

If that describes you, Threadbox may not be a better fit and we would rather say so than win a migration you regret.

Try it on your own website

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

What stays the same

Your knowledge sources, your embed location and your team. Threadbox crawls the same URLs, ingests the same documents and takes the same script-tag slot in your site. Conversation history for new visitors starts fresh; transcripts can be imported on request.

FAQ

Frequently asked questions

Test in the Playground with your hardest questions first. Guardrails and fallback messages keep the agent on-topic.

Keep exploring

Move from CustomGPT this afternoon

Free plan, no card. We will help migrate your actions.

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