Companyfounded in 1975
Microsoft
Redmond, Washington, United States · official site ↗
4thout of 10Copilot, its assistant, Celsius score 58 out of 100
Measured models00 with a profile
Best on intelligencenot measuredno measured model
Figure per questionnothing publishedneither energy nor emissions
Lineage
- Assistant
- Copilot
- Model families
- no measured model
- Headquarters and founding
- Redmond, Washington, United States; founded in 1975
- Leadership
- Satya Nadella, chief executive of Microsoft; Mustafa Suleyman, chief executive of Microsoft AI
Founding and headquarters: Microsoft, "Facts about Microsoft", 9 November 2026 ↗
Microsoft's assistant
The assistants ranking →CopilotAssistant · Celsius score58out of 100, 4th out of 10Performance63Ethics58Environment53The assistant profile →Microsoft's models
Microsoft does not publish a model measured by Epoch AI or LMArena in 2026. Copilot serves models from other companies, 4 named on the pages we have read:
GPT-6 SolOpenAI, paid plan, Microsoft 365 Copilot (Word, Excel, PowerPoint, Chat, Cowork, Copilot Studio) (official page ↗)
Claude Opus 5.5Anthropic, paid plan, Microsoft 365 Copilot (Word, Excel, PowerPoint, Chat, Cowork, Copilot Studio) (official page ↗)- GPT-6.1 SolOpenAI, paid plan, Microsoft 365 Copilot (USL licence, pay-as-you-go billing for Cowork and Copilot Studio) (copy of an official message ↗)
- Claude Sonnet 5.5Anthropic, paid plan, Microsoft 365 Copilot (USL licence) (copy of an official message ↗)
Governance and safety
- Company governance
- Services cut off to a unit of the Israeli army after revelations about surveillance of Palestinians (9/2025).
- Model safety
- 33% at SaferAI (July 2026), absent from the Future of Life Institute; serves OpenAI models without saying which.
Electricity and environmental approach
- Decarbonised electricity
- Azure: 100% renewable over the year; Three Mile Island reactor restarted for Microsoft (contract of 2024).
- Company's environmental approach
- Full report, site by site; Maia 200 chip; but emissions up 58% since fiscal year 2020.
Methodology: the ranking criteria ; the electricity use of a task for its models is a Projet Celsius estimate, based on the electricity use ofwriting 1,000 tokens (AI Impact Database).
Scores and facts: assistants ranking, scores as of 11/11/2026 (methodology 1.1), sources on the Copilot page. Models: Epoch AI (CC BY 4.0).
Continue in the ranking
The full ranking →AssistantCopilot58out of 100, 4th out of 10Scores, plans, models, data and environment.The entry →
CompanyMeta7models measured, of which 4 with an entryIts assistant, its models, its governance and the electricity of its data centres.The entry →The hub newsletter
This month's ranking, news on the impact of AI and one figure from the AI Impact Database. One newsletter a month at most, free of charge. Past issues
