Yokosuka City

City-wide ChatGPT in the staff chat tool

Yokosuka became the first Japanese city to give all staff ChatGPT, and about 80% of surveyed users reported faster work

Résultats confirmésDéclaration de l’entreprise

Problématique

Yokosuka, a city in Kanagawa Prefecture, faces a shrinking population and fewer staff, and wanted to raise office productivity. Much staff time went to drafting, summarizing and proofreading documents.

Approche

In April 2023 the city linked the ChatGPT API to LoGo Chat, the business chat tool its staff already used, and opened it to about 3,800 employees for a one-month trial. Staff used it for drafting, summaries, typo checks, spreadsheet formulas and ideas, under a rule not to enter personal or confidential information. After the trial the city moved to full use and planned to add GPT-4 and an AI strategy adviser.

Chiffres clés

~80%surveyed staff who said it made their work more efficient and wanted to keep using itDéclaration de l’entreprise[2][3][4]

~3,800city employees given access in the trialDéclaration de l’entreprise[2]

~1/2share of staff who actually used it during the trialDéclaration de l’entreprise[4]

~30%share of use that was search-type queries, judged unsuitableDéclaration de l’entreprise[4]

Enseignement

Using its existing chat tool let a city with no AI team reach all staff within weeks. About half of staff used it, but about 30% of queries were searches that the city judged unsuitable for ChatGPT.

Sources

Yokosuka City introduces ChatGPT for all staff
Gizmodo Japan20 avr. 2023Article de presse
Yokosuka City puts generative AI into practical use
Liberal Democratic Party of Japan25 juil. 2023Article de presse
Yokosuka City publishes the results of its ChatGPT trial
AIsmileydéc. 2023Article de presse
Lessons from Yokosuka City's ChatGPT trial
Mynavi News (TECH+)28 nov. 2023Article de presse

Résumés des sources

[1]Gizmodo Japan20 avr. 2023

Yokosuka announced a city-wide ChatGPT trial on 18 April 2023, described as the first among Japanese municipalities. ChatGPT's API was connected to LoGo Chat, a chat tool for local governments, so staff could use it for drafting, summaries, typo checks and ideas. Personal and confidential information was excluded.

[2]Liberal Democratic Party of Japan25 juil. 2023

Japan's Liberal Democratic Party reported that about 3,800 city employees were given access from April 2023, under a rule against entering confidential or personal data. About 80% of surveyed users said it improved efficiency and wanted to continue.

[3]AIsmileydéc. 2023

AIsmiley reported that about 80% of staff interviewed in the city's trial said work became more efficient and wanted to keep using the tool. The city reported time savings without a figure and planned to adopt GPT-4 and appoint an AI strategy adviser.

[4]Mynavi News (TECH+)28 nov. 2023

Mynavi News reported from an October 2023 event that about half of staff actually used ChatGPT and about 80% of survey respondents found it made work more efficient. It notes that about 30% of use was search-type queries, which the city considered unsuitable, that some answers were inappropriate, and that staff review every output before use.

Les informations complètes figurent dans les sources d’origine.

Ajouté le 25 oct. 2026 · Mis à jour le 25 oct. 2026