---
schema_version: '1.0'
id: news-20260725-f1a23b
url: https://gotosocial.chinng-lab-srv.dev/microsoftgaopenaiyi-cun-wotuo-que-he-zi-she-ai-mai-woexcelcopilotnitou-ru/
url_hash: f1a23b6b5d9628a244068f311bc0b39fc3448f7b4b3fd9abd105c49fc362ccad
canonical_url: https://gotosocial.chinng-lab-srv.dev/microsoftgaopenaiyi-cun-wotuo-que-he-zi-she-ai-mai-woexcelcopilotnitou-ru
source: ghost-chinng-lab
category: news/tech
category_raw: AI・テクノロジー
region: JP
tags:
- AI・テクノロジー
- AIリリース
- microsoft
- OpenAI依存
- Excel
- クラウド事業
lang: ja
published_at: '2026-07-25T11:15:18Z'
fetched_at: '2026-07-25T12:38:48.305992Z'
updated_at: '2026-07-25T12:38:52Z'
status: published
content_hash: null
content_changed_at: null
license_note: full
summary: Microsoftが自社開発AIモデル「MAI」をGitHub CopilotとExcelの本番環境に投入。GitHub Copilotではコード受諾率が同規模の他モデルより高く、Excelではコスト効率を保ちながらGPT-5.6と同等の品質を実現。これはOpenAI依存からの脱却を目指すマルチベンダー戦略の一環で、「hill-climbing」という特定用途に特化した小型モデルの高効率開発が業界の競争構造を変えつつあることを示す。
summary_source: llm
summary_en: Microsoft launches its own AI model "MAI" to GitHub Copilot and Excel番
  environment. In GitHub Copilot, the code acceptance rate is higher than the other
  models of the same size, and in Excel, the same quality as GPT-5.6 is achieved while
  maintaining cost efficiency. This is part of the multi-vendor strategy that aims
  to de。 from OpenAI dependency, which indicates that the high-efficiency development
  of small models specialized in specific applications such as hill-climbing is changing
  the competition structure of the industry。
entities:
- name: Microsoft
  type: organization
- name: Excel
  type: artifact
- name: OpenAI
  type: organization
- name: MAI-Code-1-Flash
  type: concept
- name: Copilot
  type: concept
key_facts: []
related: []
related_auto:
- name: Meta
  type: organization
  weight: 1.0
- name: Build 2026
  type: event
  weight: 1.0
- name: 27%のOpenAI持分保有
  type: UNKNOWN
  weight: 1.0
- name: GitHub Copilot
  type: artifact
  weight: 1.0
- name: MAIモデル
  type: concept
  weight: 1.0
title: MicrosoftがOpenAI依存を脱却へ——自社AI「MAI」をExcel・Copilotに投入
---

# MicrosoftがOpenAI依存を脱却へ——自社AI「MAI」をExcel・Copilotに投入

## TL;DR
Microsoftが自社開発AIモデル「MAI」をGitHub CopilotとExcelの本番環境に投入。GitHub Copilotではコード受諾率が同規模の他モデルより高く、Excelではコスト効率を保ちながらGPT-5.6と同等の品質を実現。これはOpenAI依存からの脱却を目指すマルチベンダー戦略の一環で、「hill-climbing」という特定用途に特化した小型モデルの高効率開発が業界の競争構造を変えつつあることを示す。

## Key Points
- AI・テクノロジー / AIリリース / microsoft / OpenAI依存 / Excel / クラウド事業

## Details
(本文なし。リンク先参照)

## Source
元記事: [MicrosoftがOpenAI依存を脱却へ——自社AI「MAI」をExcel・Copilotに投入](https://gotosocial.chinng-lab-srv.dev/microsoftgaopenaiyi-cun-wotuo-que-he-zi-she-ai-mai-woexcelcopilotnitou-ru/) — published 2026-07-25T11:15:18Z