Steven Heidel
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stevenheidel.com
Steven Heidel
@stevenheidel.com
API @OpenAI | 🏳️‍🌈 he/him
exciting to see my current and former employers working together to scale AI compute!
November 3, 2025 at 7:26 PM
just made a donation to the Python Software Foundation. groups like the PSF should not be forced to add/remove unrelated policies in order to receive scientific grants.
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
The official home of the Python Programming Language
www.python.org
October 30, 2025 at 12:18 AM
seems like a good day to remind everyone of the temporary chat button in ChatGPT, which will disable memory and remove the conversation from your history
October 14, 2025 at 8:02 PM
another successful DevDay in the books. thanks to everyone who attended and also to our incredible events team - it was our biggest one yet!
October 8, 2025 at 11:35 PM
between the Apps SDK, Codex SDK, and AgentKit - how many startups did OpenAI just create today?
October 6, 2025 at 10:43 PM
ChatGPT, the everything app
October 6, 2025 at 9:30 PM
it’s difficult to overstate how important Codex has been to our team’s ability to ship new products. for example: the drag and drop agent builder we launched today was built end to end in under 6 weeks, thanks to Codex writing 80% of the PRs
October 6, 2025 at 8:11 PM
want more users? how does 800M users sound?
build and distribute your apps within ChatGPT with the new Apps SDK
October 6, 2025 at 7:11 PM
Sam’s DevDay keynote starts in 15 minutes! what do you think he’s going to announce? 👀
October 6, 2025 at 4:51 PM
looking forward to DevDay today! send me a message if you're there and want to meet up - DMs are open
October 6, 2025 at 3:36 PM
want to sell your products directly to ChatGPT users? try out the new Agentic Commerce Protocol (ACP) developers.openai.com/commerce
Agentic Commerce
Design flows for embedded commerce in ChatGPT.
developers.openai.com
September 29, 2025 at 6:57 PM
just popped a bunch of tylenol so i can understand LLMs better
September 22, 2025 at 9:33 PM
i was privileged to become american thanks to the h-1b visa. the program has its flaws, but adding a $100k "bribe" (which can be arbitrarily waived if you please the right people) is not the answer
September 20, 2025 at 5:11 PM
first they came for the immigrants, then they came for the comedians - but it’s fine since i’m not any of those things
September 18, 2025 at 4:20 PM
ChatGPT now fully supports MCP tools, including write actions! just turn on the new "developer mode" in the settings
September 10, 2025 at 4:41 PM
the Realtime API has gained support for MCP, plus a better model, new voices, and SIP phone calling
August 28, 2025 at 8:02 PM
🆕 you can now connect Responses API to more sources, like Gmail and Google Calendar!
August 21, 2025 at 10:49 PM
GPT-5 is here, and it's incredible. try it in ChatGPT and the API today. openai.com/gpt-5/
openai.com
August 7, 2025 at 6:24 PM
for every step forward the US takes in AI, we take two steps backwards somewhere else. this week it's destroying a perfectly good satellite and canceling funding to one of the most promising technologies for beating cancer
August 6, 2025 at 5:34 PM
ensuring that AGI benefits all of humanity requires accepting a simple fact: that not all of humanity will have access to the internet all of the time. that's why local, open source models are so important.
August 5, 2025 at 6:57 PM
also congrats to my friends at Anthropic on the release of Opus 4.1 today! www.anthropic.com/news/claude-...
Claude Opus 4.1
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
August 5, 2025 at 4:40 PM
this is absolutely incredible - a real "see the AGI" moment. congrats to the Google DeepMind team!
deepmind.google/discover/blo...
Genie 3: A New Frontier for World Models
Today we are announcing Genie 3, a general purpose world model that can generate an unprecedented diversity of interactive environments. Given a text prompt, Genie 3 can generate dynamic worlds...
deepmind.google
August 5, 2025 at 4:39 PM
this is going to be an exciting week!
August 4, 2025 at 4:46 PM