
Startups @OpenAI | Former journalist and finance sis @FT @WSJ @goldmansachs | Happa and Mama 🇯🇵
Joined September 2012
- Tweets299
- Following1.4K
- Followers896
- Likes718
Pinned Tweet
About 800,000 U.S. women suffer from maternal mental-health disorders every year. Most aren't able to get help. A story I wrote at @columbiajourn is on the front page of the @WSJ today. #maternalmentalhealth #ppd wsj.com/articles/mothers-men…
Anna Mutoh retweeted
Plugin discovery on ChatGPT leads to massive adoption opportunity. Open ecosystems will win.
What can be built in 100 hours when you pair gamers, developers, creators as well as non-engineers with #Codex? This! @TokyoAI_JP | @OpenAI 100-Hour Game Builders Tokyo video just dropped!
What can you build in 100 hours? 🎮
Tomorrow, Sept 11: Tokyo AI & OpenAI’s 100-Hour Game Builder Challenge kicks off!
~100 builders. US$100K+ in @OpenAI credits & prizes. co-sponsored by @vercel
AI games & tools. Showcase 9.17.
@peacej @jtwald @seratch_ja
Excited to speak tomorrow at Day1 of WOMEN AI UPDATE 2026 at Shibuya Stream Hall! We will be hosting a hands-on session exploring how to take your work further with ChatGPT Work. Sign up 👇: woman-ai-update.jp/#about
Applications now OPEN for the Tokyo AI | OpenAI 100-Hour Game Builder Challenge. Apply until Sept 10 or when spots are filled. >$100K in OpenAI prizes up for grabs. Judges include gaming, AI, and anime pioneers and leaders. More on LUMA.
👉 luma.com/3kj24doy
Anna Mutoh retweeted
inference numbers published for jalapeno, team did an amazing job openai.com/index/jalapeno-fi…
OpenAI: "Today, we shared the first measured performance results from Jalapeño, OpenAI’s first custom inference chip. On InferenceX, a public benchmark using GPT‑OSS 120B, Jalapeño delivered more peak throughput per kilowatt and lower token latency than the commercial systems in the comparison. It also performed strongly on DeepSeek R1 and Kimi K2, showing that its gains extend across model families."
"This is Jevons paradox: greater efficiency makes more uses worthwhile, expanding consumption and creating new economic activity through more work completed, better decisions, more products launched, and more revenue generated."
"AI played a direct role in Jalapeño’s development, enabling the team to move from initial design to tapeout in nine months by exploring implementations, shortening design, measurement, and verification loops, and continuously iterating on model workloads. AI also helped optimize the chip’s arithmetic circuits, allowing the team to fit more compute performance into the chip on schedule."
"We plan to begin deploying Jalapeño within OpenAI’s compute infrastructure by the end of the year. It is the first generation of a multigenerational roadmap: Gen 2 is deep in development, and Gen 3 is taking shape. Each generation will build on what we learn and further advance both efficiency and speed."
"As we prepare for deployment, we are continuing production qualification, maturing the software, preparing to operate Jalapeño at scale, and validating performance across more models."
Anna Mutoh retweeted
OpenAI通販から、Codex MicroとOpenAIソックス!?が届いた😃
Codex Microは、Codexで動くAIエージェントを物理キーから操作する専用キーボード。
靴下はOpenAIのロゴをリブ編みに浮かび上がらせるのが大変だったらしい。
Video from "Series T" dropped today! Check out the founder energy from Kyoto!
New! OpenAI Japan YouTube channel is now out!
OpenAI Japan の YouTube チャンネルの新着動画📹️
.@yuichielectric による Codex の Sites プラグインを使った Web サイト作成手順の日本語解説です👉️
youtu.be/qpbiG_1J1XY?si=udiX…
わかりやすく解説しているので、ぜひご覧ください!
#OpenAIJapanNow #Codex
Yet another amazing startup event in Japan following Kyoto. This time with the Top 50 founders that applied to participate in the pitch contest out of ~280 teams from 14 different countries! @OpenNetwork_Lab @awscloud @NotionHQ and @OpenAI are here to support!
Anna Mutoh retweeted
6月下旬、Open Network Lab × OpenAIの「Series T – Post AGI from Kyoto」に応募!
書類選考は通過し、OpenAI APIクレジット2,500ドルを頂きました。農場でのAI実験に使います!
農家にも挑戦の入口を開いてくれた企画・運営のみなさんに感謝です。こういうのにアタックするのも面白いですね😀
🚨final call for builders and startups:
Applications for Series T— Post AGI from Kyoto close today at 4:00pm JST
OpenAI is providing up to $1M in API credit across the program, including $100,000 for the top winner
Building the future of AI in Japan — or planning to? Apply now
Startup founders - @OpenAI and @OpenNetwork_Lab are hosting a Startup pitch contest in Kyoto with OpenAI providing $1M USD in API credits across the program, including $100,000 USD for the 1st place winner! 🇯🇵
Apply NOW ! 👉 luma.com/wdfs5azz
OpenAI Startup team is coming to Japan next week. Can’t wait to meet great founders and startups doing business in Japan. See you in Tokyo, and Kyoto at IVS! 🇯🇵
Last day! Deadline Friday 4:00pm JST
Startup founders - @OpenAI and @OpenNetwork_Lab are hosting a Startup pitch contest in Kyoto with OpenAI providing $1M USD in API credits across the program, including $100,000 USD for the 1st place winner! 🇯🇵
Apply NOW ! 👉 luma.com/wdfs5azz
Anna Mutoh retweeted
Startup founders - @OpenAI and @OpenNetwork_Lab are hosting a Startup pitch contest in Kyoto with OpenAI providing $1M USD in API credits across the program, including $100,000 USD for the 1st place winner! 🇯🇵
Apply NOW ! 👉 luma.com/wdfs5azz
2 days left to apply for Series-T Startup Pitch Contest in Kyoto. Deadline is this Friday 4pmJST! Get your applications in to win: top prize $100,000 in OpenAI API credits. $1M credits available across all categories. 🇯🇵 xitter.cf/anna_mutoh/status/2068…
Startup founders - @OpenAI and @OpenNetwork_Lab are hosting a Startup pitch contest in Kyoto with OpenAI providing $1M USD in API credits across the program, including $100,000 USD for the 1st place winner! 🇯🇵
Apply NOW ! 👉 luma.com/wdfs5azz
Anna Mutoh retweeted
締切まであと6日
Series Aの前に、Series Tを。
先日Microsoft CEOのNadellaは、AI時代の企業は「Token Capital」を構築すべきだと語りました。私たちは、そのToken Capitalを築くための新しいラウンドとして「Series T」を提唱します。AGI時代の価値創造に挑戦するビルダー、起業家、学生を募集しています。
\\ 総額最大1.6億円のOpenAI APIクレジット //
OpenAIとOnlabがピッチイベント「Series T – Post AGI from Kyoto」を開催します。AIのクレジットを獲得し、大きな挑戦を加速させる起業家、ビルダーを募集します。
⏰ 6/26(金)16時締切 応募フォーム👇
forms.gle/4wPsPX4Ne3SnTRJHA
7/1 京都市京セラ美術館(IVS KYOTO公式サイドイベント)
Startup founders - @OpenAI and @OpenNetwork_Lab are hosting a Startup pitch contest in Kyoto with OpenAI providing $1M USD in API credits across the program, including $100,000 USD for the 1st place winner! 🇯🇵
Apply NOW ! 👉 luma.com/wdfs5azz

















