Andre Saraiva

o1-preview, o1-mini, o1, o3-mini,o4-mini, o3...

Reasoning Researcher at OpenAI. Ex-DeepMind.

[OpenAI @OpenAI]

GPT-5.3 Instant also has fewer unnecessary refusals and preachy disclaimers.

[Andre Saraiva @andresnds]

@MillionInt Thank you for all the support and for building an incredible team, JT. Will definitely miss you 🙏

[OpenAI @OpenAI]

GPT-5.2 is now rolling out to everyone.
https://t.co/nfubPwnIIw

[Mostafa Rohaninejad @MostafaRohani]

1/n
I’m really excited to share that our @OpenAI reasoning system got a perfect score of 12/12 during the 2025 ICPC World Finals, the premier collegiate programming competition where top university teams from around the world solve complex algorithmic problems. This would have placed it first among all human participants. 🥇🥇

[Andre Saraiva @andresnds]

Just 2 years ago this line of work could barely pass easy CF tasks. Today our models reach IOI gold level on the official AI track, first among AI entrants. Long project with @ahelkky @_lorenzkuhn @alexwei_ @bminaiev @oleg_murk @MostafaRohani @clavera_i. See @SherylHsu02 thread.

[Sheryl Hsu @SherylHsu02]

1/n I’m thrilled to share that our @OpenAI reasoning system scored high enough to achieve gold 🥇🥇 in one of the world’s top programming competitions - the 2025 International Olympiad in Informatics (IOI) - placing first among AI participants! 👨‍💻👨‍💻

[Andre Saraiva @andresnds]

gpt-5 wen? now.

first, it's so much better in chatgpt.

second, it's amazing in the api! try it in your applications, really!

https://t.co/XvLL1zgmMN

[OpenAI @OpenAI]

GPT-5 is here.

Rolling out to everyone starting today.

https://t.co/rOcZ8J2btI

[OpenAI @OpenAI]

wen GPT-5? In 10 minutes.

https://t.co/EOvjGJrHbj

[OpenAI @OpenAI]

Our open models are here.
Both of them.

https://t.co/9tFxefOXcg

[Epoch AI @EpochAIResearch]

A fourth problem on FrontierMath Tier 4 has been solved by AI! Written by Dan Romik, it had won our prize for the best submission in the number theory category.

[Andre Saraiva @andresnds]

@__nmca__ Loool

[Alexander Wei @alexwei_]

1/N I’m excited to share that our latest @OpenAI experimental reasoning LLM has achieved a longstanding grand challenge in AI: gold medal-level performance on the world’s most prestigious math competition—the International Math Olympiad (IMO).

[Andre Saraiva @andresnds]

@jgwtt @OpenAI submissions are public, so you can see all OpenAIAHC at the @atcoder website:
https://t.co/EhsC2oKBpm

I think you have to be logged in tho

[Andre Saraiva @andresnds]

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. 👇

[Andre Saraiva @andresnds]

@peteredm0 @_lorenzkuhn @FakePsyho Absolutely not! OpenAI is a highly collaborative company and this builds upon everyone’s work.

Some specific shoutouts here tho

[Andre Saraiva @andresnds]

19/N A special shoutout to @bminaiev @_lorenzkuhn James Lee @ahelkky @IClaveras and everyone at @OpenAI and also everyone who works on our reasoning models.
Finally, thanks to @merettm @markchen90 @MillionInt @gdb @sama for supporting this research

[Andre Saraiva @andresnds]

@spencerschiff_ @Miles_Brundage @OpenAI As a Large Language Model trained by OpenAI, I can’t disclose the models I use 🤖

[Andre Saraiva @andresnds]

@bminaiev @_lorenzkuhn @ahelkky @IClaveras @OpenAI @merettm @markchen90 @MillionInt @gdb @sama @_lorenzkuhn and me in-person watching the model compete

[Andre Saraiva @andresnds]

19/N A special shoutout to @bminaiev @_lorenzkuhn James Lee @ahelkky @IClaveras and everyone at @OpenAI and also everyone who works on our reasoning models.
Finally, thanks to @merettm @markchen90 @MillionInt @gdb @sama for supporting this research