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
- 50 conversations / month
- 1 seat
- Website widget and shared inbox
- Models that count up to 2×
- Contact form when you reach the limit
Starter
- 500 conversations / month
- 2 seats
- Everything in Free, plus Email
- Models that count up to 2×
- Remove “Powered by”
- Extra conversations £6 per 100
Growth
- 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
- 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
- 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
| Feature | Free | Starter | Growth | Business |
|---|---|---|---|---|
| Monthly price (ex VAT) | Free | £29 | £99 | £349 |
| Annual price (ex VAT) | Free | £290 | £990 | £3,490 |
| Conversations / month | 50 | 500 | 2,000 | 10,000 |
| Seats | 1 | 2 | 5 | Unlimited |
| Website widget | ||||
| WhatsApp, SMS & social | ||||
| Slack & Teams | ||||
| Voice | ||||
| AI models | Up 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 minutes | 10p / min | |||
| At the limit | Contact form | Up to your spend cap | Up to your spend cap | Up 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.
| Model | Counts as | Free | Starter | Growth | Business |
|---|---|---|---|---|---|
| GPT-5.6 Luna | 1 | ||||
| Gemini 3.5 Flash-Lite | 1 | ||||
| Claude Haiku 4.5 | 2 | ||||
| Gemini 3.8 Flash | 5 | ||||
| GPT-5.6 Terra | 15 | ||||
| Claude Sonnet 5 | 15 | ||||
| GPT-5.6 Sol | 30 | ||||
| Claude Opus 5 | 30 | ||||
| GPT-6 Astra | 60 | ||||
| Claude Fable 5.1 | 60 |
Older models stay available on Business for agents that already use them.
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 GrowthTeams 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.”
“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.”
- 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.
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.