Dandelaion

HMRC · production

Ask HMRC online

"Digital (virtual) assistant chat (chatbot) and human HMRC adviser webchat."

Publicly known

  • Owner: HMRC
  • Vendor: Microsoft (formerly known as Nuance)

Undisclosed

  • Model architecture
  • Model performance benchmarks
  • Training data provenance

Who is actually being paid

Microsoft (formerly known as Nuance)

Role

Microsoft are our third party Software as as Service (SaaS) supplier. They provide back end functionality for our DA and webchat including data insights and metrics, Natural Language Understanding modelling, reporting and set up and maintenance of Agent Groups and Business Rules

Procurement procedure

Competitive procedure with negotiation

Data access terms

Restricted to non authenticated user data. Any Personal Identifiable Information is redacted.

No Companies House number in the record.

Source: ATRS record · last updated Thu Jun 26 2025