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Deploy the read-only role in your management account from the template CostChat gives you. Member accounts are discovered from the organization and connected the same way. A billing export in the payer account unlocks resource-level history.
Product · CostChatFor FinOps, finance & platform teams
Ask your AWS bill
a question.
Get the chart back.
CostChat reads your AWS organization through a read-only role and answers cost questions in plain English — with the numbers it used, an explorer to dig further, and dashboards you can share with the people who asked.
How it works
Connect. Ask. Share.
No pipeline to build. CostChat reads Cost Explorer through a role you deploy from a one-click template, and the billing export your payer account already produces when you want resource-level detail.
Ask
Type the question. The assistant fetches cost and usage, compares periods, asks Cost Explorer for a forecast or queries the billing export, and answers on your workspace’s cost basis — with one explorer view per answer.
Explore and share
Open the view in the explorer, save it to a dashboard, or share a snapshot link. Colleagues get the numbers without the AWS console.
Recorded in the app
One question, one chart, the explorer.
A real workspace, unedited: the question is typed, the answer arrives with its table and a proposed chart, and one click opens that chart in the explorer.
01 · Ask
Every answer shows its work.
The assistant has a handful of tools and no imagination: it fetches cost and usage, compares two periods to explain a change, asks Cost Explorer for a forecast, lists the values of a dimension or tag, and queries the billing export for resource-level questions. Every number carries the cost basis of your workspace, and each answer proposes one explorer view you can open, save or share.
- Why did it go up? Two periods compared, biggest changes first.
- What will it be? Forecasts from Cost Explorer’s own model, on your basis.
- Which resource? Answers from the billing export, beyond the fourteen days Cost Explorer keeps per resource.
- Keep it. Save answer keeps the text; Save to dashboard keeps the chart.
02 · Explore
Drag a field, get a chart.
Fields sit under eight groups — Account, Product, Location, Date, Resource, Tags, Cost Category and Measures. Drop up to three on the canvas, filter, pick stacked or grouped bars, lines, points or a heat map, choose a rolling range like the last three months, and undo what you did not mean.
- The fields decide the source. Standard dimensions answer from Cost Explorer; resource, usage amount, Kubernetes split cost and tags from the billing export. The footer names which one.
- Bookmarks keep the views you come back to; the URL carries the exact view to a colleague.
- One basis. Net amortized by default, support plans and tax as toggles, the same in chat, explorer and dashboards.
03 · Dashboards
Pin it, share it.
Every saved view lives on a dashboard, and the tiles refresh live from the same explorer. Sharing freezes a snapshot on a public link, so the person you send it to reads the numbers you saw, not whatever they became overnight.
- Overview starts with five preset views; rename, reorder or delete them like any tile.
- Chat answers become tiles too: save the chart the assistant proposed.
- Shared pages render the snapshot only — never your live data.
04 · Team
One workspace, the right accounts for each person.
Invite by e-mail and the invitation arrives in the inbox with a link that lands the person in your workspace. Roles are simple, and account access is granted per member, so a team lead sees their accounts and nothing else.
- Admins connect accounts, manage the team and pick the cost basis.
- Members ask and explore within the accounts granted to them.
- Quotas on users, connected accounts and questions per month are visible in Settings.
05 · Connect
Read-only, from a template, removable any time.
The template creates a role that can read cost data and nothing else; the permissions it needs are listed in the app before you deploy it. Remove the stack and the access is gone.
- One organization per workspace. Connect the management account and CostChat follows it; connect a member account alone and it stays alone.
- A probe tells you when the role is missing, when AWS is still preparing Cost Explorer (up to a day the first time), or when access was revoked.
- Billing export, optional. In the payer account, for history older than thirteen months and cost per resource.
Access
Read-only by construction
The role you deploy can read costs and nothing else. It lives in your account, under your control, and a deleted stack ends the access.
Model
Claude on Amazon Bedrock
Answers come from Claude running on Amazon Bedrock. Your cost data is read through the role and stays inside AWS; nothing goes to a model provider outside it.
Numbers
One basis everywhere
Net amortized by default, with support plans and tax as toggles. Chat, explorer and dashboards use the same basis, so the numbers agree with each other and with finance.
FAQ
Common questions.
Short answers below. The exact permissions of the role are shown in the app before you deploy the template.
What does CostChat need from my AWS account?+
A read-only role, created from a template in the AWS console. Connect the management (payer) account to see the whole organization; a member account can be connected on its own. Optionally, a billing export in the payer account for resource-level detail.
Where do the numbers come from?+
Cost Explorer for the standard dimensions and the forecasts; the billing export (Cost and Usage Report 2.0) for cost per resource, usage amounts, Kubernetes split and idle cost, and history older than Cost Explorer keeps. The footer of every view names its source.
Which model answers?+
Claude on Amazon Bedrock. The model is resolved at each release from the models available in the account and pinned for the life of a task, so an answer never changes model halfway through.
Can a member see every account?+
Only the accounts an admin granted. The chat tools and the explorer take the member’s grants, not the payer’s.
Do I need to write SQL?+
No. Questions are plain English and the explorer is drag and drop. When an answer needs the billing export, the assistant writes and runs the query for you.
How is it priced?+
Workspaces run on a plan with quotas on users, connected accounts and questions per month. Ask us for current pricing.
Connect an account, ask the first question.
Sign in with Google or e-mail, name your workspace, deploy the template. The first answer is minutes away.