6Territories
5Organisations
4Occupations and activities
2Machine operations
1Calculation factorsLe Chat response, Mistral AI LCA
A response of about one page from the Mistral AI assistant, over its life cycle.
- Selected reference: A response of 400 tokens, about half a page, source Mistral AI.
- Counted: the life cycle of the response: local grid electricity, manufacturing and transport of the servers.
- Out of scope: the user's device.
Sentence to citeLe Chat response, Mistral AI LCA: 1.14 gCO2e, figure published by Mistral AI.
Origin of the value
Server manufacturing included, local grid electricity. The only life cycle assessment published by a model provider, along with Carbone 4 and ADEME; water is quantified in it on the same scope. Le Chat, the name of the assistant at the date of the study, has been called Vibe since May 2026.
Comparison with the other uses
↓ The heaviest use in the topic, "Deep research": 45 gCO2e, 40 times more
Emissions of one use, linear scale, 7 of the 21 uses in the topic. For calculated values, servers worldwide.
Characteristics
| Unit | 1 answer : a response of 400 tokens, about half a page |
|---|---|
| Counted | the life cycle of the response: local grid electricity, manufacturing and transport of the servers |
| Not counted | the user's device |
| Status | published, 1 reading with the same scope |
All the characteristics
| Identifier | IA-0051, projetcelsius.com/en/ai/database/IA-0051/ |
|---|---|
| Version | 0.3 of 2 November 2026 |
| Category | Uses, a request to AI |
| Length of the exchange | A response of 400 tokens, about half a page (1.14 gCO2e) |
| Choice of the selected value | value taken as it stands from its source, without calculation |
| Sources | Mistral AI, 2025 |
| Licence | CC BY 4.0 |
Variants
Sources of the calculation
1 publication, for this entry and those used to calculate it, with the chosen parameters.
Energy and factors
The references of the selected values and of the entries used in this calculation.
Mistral AI · July 2025
Our contribution to a global environmental standard for AI ↗ (new tab)
Role and limits : Mistral AI
What the publication covers. life cycle, manufacturing, water, training and use
Reading by the database. The first LCA published by a developer
Reference of the variant "A response of 400 tokens, about half a page"
Scope of the figure used. Le Chat, a response of 400 tokens, life cycle with local grid electricity, server manufacturing included, user device excluded
Limit. Calculated with the local grid: not comparable with Google's 0.03 gCO2e, calculated with its electricity contracts
Published values
2 figures for the same operation, each within its own scope.
CO2e
| Source | Date | CO2e | What the figure measures | Scope | Status |
|---|---|---|---|---|---|
| Mistral AI, LCA of Large 2 ↗Our contribution to a global environmental standard for AI | Jul. 2025 | 1.14 gCO2e | Le Chat, a response of 400 tokens, life cycle with local grid electricity, server manufacturing included, user device excluded | same scope | estimated |
Water
| Source | Date | Water | What the figure measures | Scope | Status |
|---|---|---|---|---|---|
| Mistral AI, LCA of Large 2 ↗Our contribution to a global environmental standard for AI | Jul. 2025 | 45 mL | Le Chat, a response of 400 tokens, water consumption over the life cycle, server manufacturing included | same scope | estimated |
The published figures do not all count the same scope; the scope of each figure is written next to it. Why do the estimates diverge?
Methodology conventions
With their alternatives
| The default location | Without other information, the servers are in the world, at the world average electricity |
|---|---|
| Electricity, location-based, on a life cycle basis | The kilowatt-hour is that of the servers' country, on a life cycle basis, from a single source for all countries |
| Two significant figures | A calculated value is rounded to two significant figures, a published value is reproduced with the precision of its source; the calculation keeps full precision |
| Calculate a case without an entry | The formula, the default values and a step-by-step example |
Uses in the hub
Charts, figures, analyses and articles that cite this entry
History
Entry in version 0.3 of 2 November 2026, in the database in version 0.4
- 2 November 2026Designation : A Le Chat response, over its life cycle becomes Le Chat response, publisher LCA.More precise designation: the object first, the specification after the comma, the quantity or period at the end; the former title remains searchable.
- 2 November 2026Designation : Le Chat response, publisher LCA becomes Le Chat response, Mistral AI LCA.The name in people's own words.
- 1st November 2026Creation : version 0.1.Entry added: a Le Chat response over its life cycle, carbon and water from the Mistral AI LCA.
- 31 October 2026Creation of the database, in its first version (0.1).
