Costory
Parisian FinOps agent that allocates cloud, AI and data bills and explains every change inside Slack and your AI assistant
Quick Overview
| Company | Costory SAS |
|---|---|
| Category | Cloud Cost Management (FinOps) Software |
| Headquarters | Paris (Station F), France |
| Founded | Not stated |
| EU Presence | Yes - France (EU) |
| Data Location | EU (stated on the vendor's about page) |
| Open Source | No |
| GDPR Compliant | Yes |
| Self-Hosting | No |
| Main Features | Cost allocation, budgets and alerts in Slack, FinOps MCP, Ask Costory assistant, cloud and AI and data spend, daily data, unlimited users and data sources |
| Pricing | Starter €250/month, Team €600/month, Business €1,200/month, Custom from €2,500/month; 30-day free trial |
| Best For | Platform and engineering teams that want cost answers in chat instead of another dashboard |
| Replaces | CloudHealth, Cloudability, Vantage, CloudZero |
Detailed Review
Costory starts from a complaint that most buyers will recognise: every provider ships a cost dashboard, yet nobody can say which team owns a line or which deploy moved it. The product maps each bill onto your own structure of teams, products and features, then keeps that mapping current.
The interface is deliberately thin. An alert lands in a Slack channel with the change, the likely cause and a suggested next step, and a follow-up question is answered in the thread. The same data is exposed through a FinOps MCP server, so an engineer can ask Claude or Cursor about spend without logging in.
Plans tied to usage, not to your bill
Plans scale with how heavily teams use the product, and an annual cloud and AI spend band acts only as a guardrail: €10M for Starter and Team, €20M for Business, above that the Custom plan. Every tier includes unlimited users and data sources, so a larger rollout does not mean counting seats.
Billing runs by card or through the AWS and Google Cloud marketplaces, and a 30-day trial is offered on every plan.
Read-only access and EU residency
The company describes itself as French, with data stored and processed in the EU, and it requests read-only access to your cloud accounts. For a team that dislikes handing write permissions to a third party, that is the baseline question answered up front.
Security and a master services agreement are linked from the footer, which helps when procurement asks for paperwork.
Where the AI sits
Ask Costory is a built-in assistant with a fair-use quota that grows with the plan. Using your own agent over the MCP does not consume those credits, which makes the quota a smaller constraint than it first looks.
Limitations to Consider
Starter refreshes data daily with a two-day latency and keeps 13 months of history, and hourly granularity starts at the Business plan. SSO (SAML, OIDC) is only on Team and above. Fair-use limits apply to queries and to Ask Costory, although the vendor says usage is slowed and never cut off. The marketplace listings named on the site are AWS and Google Cloud, and no Azure marketplace listing is mentioned.
Who Should Use Costory
Engineering-led companies with cloud and AI bills of a few million euros a year that want allocation and alerts in Slack. Teams that need chargeback invoicing or on-premise metering should compare Exivity.
Pros and Cons
Pros
- Flat, published plans with unlimited users
- Answers and alerts inside Slack
- FinOps MCP works with Claude and Cursor
- Read-only cloud access
- French company with EU data residency
Cons
- Daily refresh with two-day latency on cheaper plans
- SSO only from the Team plan
- No Azure marketplace listing mentioned
- Younger product than the incumbents
Alternatives to Costory
Other European cloud cost management (finops) software worth comparing before you decide:
Holori
France · Multi-cloud FinOps dashboard with a free tier and virtual tags
Exivity
Netherlands · Cost allocation, chargeback and billing across cloud and datacentre
Finout
Israel · Virtual-tag cost allocation across cloud, Kubernetes and AI spend
Hyperglance
United Kingdom · Self-hosted cloud cost and inventory tool priced by resource count
See all European cloud cost management (finops) software or compare them directly against CloudHealth on our alternatives page.
Frequently Asked Questions
Four published plans: Starter at €250/month, Team at €600/month, Business at €1,200/month and Custom from €2,500/month. Prices are quoted for annual billing, with unlimited users and data sources on all of them.
No. The vendor states read-only access on your cloud, and recommendations are carried out by your own teams or coding agent.
Yes, through its FinOps MCP server. Queries made from your own agent do not draw on the Ask Costory credit allowance.