Kazuhiro Sera (@seratch) 's Twitter Profile
Kazuhiro Sera

@seratch

Developer Experience @OpenAI | ex-Slack SDK dev & DevRel, SmartNews VPoE | JP 🇯🇵 @seratch_ja

ID: 222663512

linkhttps://github.com/seratch calendar_today04-12-2010 02:19:27

2,2K Tweet

1,1K Followers

241 Following

Romain Huet (@romainhuet) 's Twitter Profile Photo

Multimodal agents are now easier to build with the Agents SDK—voice included! Check out this new sample app from dominik kundel and Kazuhiro Sera showing how to quickly integrate real-time audio into your agents.

OpenAI Developers (@openaidevs) 's Twitter Profile Photo

Thanks to everyone who joined our first Developer Listening Session in SF! It was inspiring to see the community come together to help shape our approach to the next open model. Your feedback is invaluable—more to come soon!

Thanks to everyone who joined our first Developer Listening Session in SF!

It was inspiring to see the community come together to help shape our approach to the next open model. Your feedback is invaluable—more to come soon!
ilan bigio (@ilanbigio) 's Twitter Profile Photo

we're kicking off this year's @openai build hours! our first one – agentic tool calling, where i'll go over - CoT tool calling with o3 & o4-mini - long-horizon tasks - evaluating agentic tasks build hours are code-focused and practical, highly recommend. tune in on thursday!

we're kicking off this year's @openai build hours! 

our first one – agentic tool calling, where i'll go over 
- CoT tool calling with o3 & o4-mini
- long-horizon tasks
- evaluating agentic tasks

build hours are code-focused and practical, highly recommend. tune in on thursday!
OpenAI Developers (@openaidevs) 's Twitter Profile Photo

The Agents SDK is now available in TypeScript and supports handoffs, guardrails, tracing, MCP, and other core agent primitives, just like the Python version. openai.github.io/openai-agents-…

The Agents SDK is now available in TypeScript and supports handoffs, guardrails, tracing, MCP, and other core agent primitives, just like the Python version.

openai.github.io/openai-agents-…
Andre Saraiva (@andresnds) 's Twitter Profile Photo

1/N Yesterday in Tokyo we OpenAI ran a 10‑hour live Humans vs AI exhibition at the AtCoder World Tour Finals Heuristic. We pointed an OpenAI reasoning model at the same brutal problem the finalists tackled—no human help, same rules, same clock. Buckle up. 👇

1/N Yesterday in Tokyo we <a href="/OpenAI/">OpenAI</a> ran a 10‑hour live Humans vs AI exhibition at the AtCoder World Tour Finals Heuristic. We pointed an OpenAI reasoning model at the same brutal problem the finalists tackled—no human help, same rules, same clock. Buckle up. 👇
dominik kundel (@dkundel) 's Twitter Profile Photo

Say hello to gpt-oss-120b and gpt-oss-20b! With 🧠 reasoning with raw CoT 🔨 tool calling in the CoT 🌐 web & python tooling 🤏 can run on your laptop

Romain Huet (@romainhuet) 's Twitter Profile Photo

Today’s a big day! We have something really exciting to share with the open-source community. We’re launching two open-weight language models: gpt-oss-120b and gpt-oss-20b. They’re incredible models, built for developers, trained for reasoning, efficiency, and real-world use.🧵

Romain Huet (@romainhuet) 's Twitter Profile Photo

Heads-up for developers trying gpt-oss: performance and correctness can vary a bit across providers and runtimes right now due to implementation differences. We’re working with inference providers to make sure gpt-oss performs at its best everywhere, and we’d love your feedback!

Kazuhiro Sera (@seratch) 's Twitter Profile Photo

Thanks for watching the livestream! I mainly worked on this: github.com/openai/gpt-5-c… — packed with examples I could think of. Enjoy coding with GPT-5! 😎

dominik kundel (@dkundel) 's Twitter Profile Photo

I've been mind blown by some of the apps that GPT-5 has been creating entirely on its own. Kazuhiro Sera and Katia Gil Guzman have been collecting some incredible examples in the docs 👇 platform.openai.com/docs/guides/la…

Romain Huet (@romainhuet) 's Twitter Profile Photo

GPT-5 is astonishingly good at frontend development. Here’s a gallery of dozens of beautiful demo applications, each generated entirely in a single GPT-5 prompt, without writing any code by hand! ✨

Kazuhiro Sera (@seratch) 's Twitter Profile Photo

Now checking for issues related to GPT-5 models with the OpenAI Agents SDK. If you’re aware of anything, please share it here in this thread or on GitHub Issues.