Quelm
Work with us

A studio for software
that's built well.

We use AI to work fast, and we're careful about the rest.

Work with usOur products

We build software that
didn't exist yesterday.

Custom AI software

We build AI tools for companies that need something specific. No templates, no off-the-shelf — just the tool your team actually needs.

Our own products

We ship our own software under the Quelm name. TokenCapAI is the first — spend enforcement for teams running AI agents. Building products of our own keeps us honest about what's hard.

Problems we thought were worth solving.
Built with AI.

TokenCapAI

AI cost control. Per customer. Actually enforced.

Beta

TokenCapAI puts a real-time spending limit on every customer, team, or agent, and blocks calls the moment a budget is hit, so overspend stops before it lands on the invoice. Hard caps hold the limit even under concurrent load, for anyone billing customers for AI or running regulated workloads. The same per-customer data lets Finance invoice on exactly what was used. Works across OpenAI, Anthropic, Gemini and 200+ models with sub-50ms enforcement.

Per-customer capsSub-50ms hard blockBill customers for AI220+ modelsFree tierFrom £25/mo

Quietburn

Burnout detected. Privately.

Open source

An offline AI journaling companion that watches your entries over time and warns you about burnout before you notice it yourself. Runs entirely on your device — no data ever leaves your machine.

Fully offlineGemma 4 via OllamaVoice journalingMultilingual

Work with us —
or be first to know.

Whether you need custom AI software or want early access to what we're building, we'd like to hear from you.

Custom projects

Build with Quelm

Tell us what you're building. We'll be honest about whether we can help.

Early access

Product waitlist

Get early access to TokenCapAI and Quietburn. We keep the list small and go deep with early users.

Available products

TokenCapAI

AI spend control

Beta

Quietburn

Offline burnout detection

Open source