Pricing

Simple plans, priced by conversations

Every plan includes a monthly conversation allowance for your AI agent. Start free, upgrade when it is earning its keep. Prices in GBP excluding VAT; UK VAT is added at checkout and shown on your invoice.

Free

£0/ month
Free forever, no card
  • 50 conversations / month
  • 1 seat
  • Website widget and shared inbox
  • Models that count up to 2×
  • Contact form when you reach the limit

Starter

£29/ month
+ VAT, billed monthly, cancel anytime
  • 500 conversations / month
  • 2 seats
  • Everything in Free, plus Email
  • Models that count up to 2×
  • Remove “Powered by”
  • Extra conversations £6 per 100
Most popular

Growth

£99/ month
+ VAT, billed monthly, cancel anytime
  • 2,000 conversations / month
  • 5 seats
  • Everything in Starter, plus WhatsApp, SMS & social
  • Models that count up to 15×
  • API actions
  • Remove “Powered by”
  • Extra conversations £4 per 100

Business

£349/ month
+ VAT, billed monthly, cancel anytime
  • 10,000 conversations / month
  • Unlimited seats
  • Everything in Growth, plus Slack & Teams, Voice
  • Every AI model
  • API actions
  • Advanced handoff
  • Remove “Powered by”
  • Extra conversations £3 per 100
Included in every plan
  • Shared inbox with human takeover
  • Train on your website and documents
  • Help Hub, contacts & CSAT
  • Free viewer & contributor seats
  • UK/EU hosting, GDPR ready

What counts as a conversation? A conversation is a thread where the AI agent replies at least once. It counts once per 24 hours, however many messages are exchanged. Threads handled only by your team never count.

Compare all features
FeatureFreeStarterGrowthBusiness
Monthly price (ex VAT)Free£29£99£349
Annual price (ex VAT)Free£290£990£3,490
Conversations / month505002,00010,000
Seats125Unlimited
Website widget
Email
WhatsApp, SMS & social
Slack & Teams
Voice
AI modelsUp to 2×Up to 2×Up to 15×All
API actions
Advanced handoff
Remove “Powered by”
Extra conversations£6 per 100£4 per 100£3 per 100
Voice minutes10p / min
At the limitContact formUp to your spend capUp to your spend capUp to your spend cap

Need invoicing, SSO or a large team? Talk to us.

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

Extra conversations and spend caps

Need more? Extra conversations are billed in blocks of 100 (£6 / £4 / £3). Set a monthly spend cap, and we alert you at 80% and 100%.

What counts as a conversation? A conversation is a thread where the AI agent replies at least once. It counts once per 24 hours, however many messages are exchanged. Threads handled only by your team never count.

Voice on Business is billed at 10p per minute, on top of your plan.

Starter
£6 per 100 extra
Growth
£4 per 100 extra
Business
£3 per 100 extra

How models use your allowance

Each plan includes a monthly conversation allowance. Conversations on our standard models count as 1. More powerful models use more of your allowance: for example, a conversation on Claude Sonnet 5 counts as 15.

ModelCounts asFreeStarterGrowthBusiness
GPT-5.6 Luna1
Gemini 3.5 Flash-Lite1
Claude Haiku 4.52
Gemini 3.8 Flash5
GPT-5.6 Terra15
Claude Sonnet 515
GPT-5.6 Sol30
Claude Opus 530
GPT-6 Astra60
Claude Fable 5.160

Older models stay available on Business for agents that already use them.

Savings calculator

What does 70% fewer tickets look like on your volume?

Uses six minutes per ticket and a 70% resolution rate, the same range teams already see on repetitive work.

Resolved without a person
560
Hours given back
56
Monthly saving
£3,360

Growth covers 2,000 conversations a month for £99 / month.

Start on Growth
Customer stories

Teams already saving hours a week

“Customers get help any time without it hitting our costs, and our marketing team dialled in the tone for our brand from the dashboard. The webhooks are golden: customers get live tracking without taking up support resources.”
Hayley ParryMarketing Manager, PalletOnline
Read the story
“In a complex haulage network, quick and accurate information retrieval is invaluable. We fed it our network documents and staff now query the assistant directly for rules and operational guidelines.”
David Brown JnrManaging Director, Browns Distribution
Read the story
live tracking answers without a ticket
24/7
live tracking answers without a ticket
PalletOnline
to find any network rule, down from hours
Minutes
to find any network rule, down from hours
Browns Distribution

Browns Distribution is Threadbox's parent company.

FAQ

Pricing questions, answered

A conversation is a thread where the AI agent replies at least once. It is counted once per 24-hour window, however many messages go back and forth. If a thread uses a more powerful model, it counts at that model's weighting. Threads handled only by your team, spam, and the Playground never count.