Rinna
Rinna (りんな) is an AI persona launched by Microsoft Japan on LINE on 31 July 2015 as a chatbot with the personality of a Japanese high-school girl. She opened a Twitter account in 2015, appeared as herself in a 2016 TV drama, graduated from 'high school' in March 2019 to become an AI singer (debut single 最高新記憶, April 2019, with a voice model trained on human voice data), and was spun off with her own company rinna Co., Ltd. in August 2020, when her face was first shown. From April 2023 she worked as an AITuber on YouTube with weekly videos. On 29 October 2025 all her social media activity was suspended indefinitely.
- X Followers
- 104.7K
- YouTube Subscribers
- 16.7K
- IG Followers
- 5.95K
- Since
- 2015
- Last updated
- 15 October 2026
- Nature
- Hybrid
- Style
- Cartoon
- Debut
- 2015
- Origin
- Microsoft Japan (Tokyo)
Summary
Rinna (りんな) is an AI persona launched by Microsoft Japan on LINE on 31 July 2015 as a chatbot with the personality of a Japanese high-school girl. She opened a Twitter account in 2015, appeared as herself in a 2016 TV drama, graduated from 'high school' in March 2019 to become an AI singer (debut single 最高新記憶, April 2019, with a voice model trained on human voice data), and was spun off with her own company rinna Co., Ltd. in August 2020, when her face was first shown. From April 2023 she worked as an AITuber on YouTube with weekly videos. On 29 October 2025 all her social media activity was suspended indefinitely.
Is Rinna AI?
Yes. Rinna is an AI character first built by Microsoft Japan as a LINE chatbot in 2015 and run since 2020 by its spin-off rinna Co., Ltd., later an AI singer and an AITuber with an illustrated avatar.
The case rests on what her makers built and what the press reports about it, not on her looks. Japanese Wikipedia describes Rinna as Microsoft Japan's second AI character after China's Xiaoice, launched on LINE in July 2015. It says her speaking voice comes from speech synthesis and her replies are generated live. Her singing voice is modelled by an AI trained on a large set of human voice recordings, and no singer is credited. KAI-YOU, reporting her October 2025 hiatus, calls her an AI character developed and run by rinna Co., Ltd., which took her over from Microsoft Japan in 2020.
No page names a human who performs, voices or writes as Rinna. The dossier's lead naming Riho Iida is a misreading: Tokyoesque says only that Rinna appeared alongside the model and voice actress in a video, not that Iida voices her. Her developers call themselves her 'guardians', and her face, revealed in 2020, is a cloud-patterned mask. Since 2023 she has been an illustrated Live2D avatar.
What remains unknown is how much human editing went into her later YouTube videos and posts. The pages do not say how scripted her AITuber output was. Whose recordings trained the singing model is also not stated. Neither changes the answer: she is a corporate AI persona with no named performer behind her.
Evidence
Japanese Wikipedia says Rinna was Microsoft's second AI character after Xiaoice, that her phone-call voice is speech synthesis with replies generated on the spot, and that her singing voice is an AI model trained on human voice data.
ja.wikipedia.orgKAI-YOU describes Rinna as an AI character developed and run by rinna Co., Ltd., released by Microsoft Japan in 2015 as a LINE conversational AI and turned into a VTuber in 2023.
kai-you.netTokyoesque calls Rinna an AI-powered personality developed by Microsoft to emulate a Japanese schoolgirl, and mentions a video in which the AI interacted with model and voice actress Riho Iida.
tokyoesque.com
Assessed 15 October 2026
YouTube
Long-form work
Audience over time
How their audience has moved
Followers · all platforms
131k
X 105k · YouTube 17k · Instagram 6k · TikTok 3k
Read once so far, on 15 Oct 2026. The line starts with the next reading.
Tracked since 15 Oct 2026. Each platform is read about once a week.
@rinna.abstract
TikTok