Zhiqing Sun (@EdwardSun0909) / X

Zhiqing Sun

801 posts

Zhiqing Sun

@EdwardSun0909

Lead agent research @Meta MSL TBD Lab. previously posttraining/agent research @OpenAI. CS PhD @LTIatCMU

San Francisco, CA

cs.cmu.edu/~zhiqings/

Joined August 2015

Pinned
Zhiqing Sun
@EdwardSun0909
Apr 8
Excited to share Muse Spark, the first model from whole team’s work in MSL! 🚀 It’s natively multimodal and agentic. I’ve been using it for my daily coding and research tasks. Still plenty of room to improve in agentic domains, but we’re moving with great velocity. It’s a
Alexandr Wang
@alexandr_wang
Apr 8
1/ today we're releasing muse spark, the first model from MSL. nine months ago we rebuilt our ai stack from scratch. new infrastructure, new architecture, new data pipelines. muse spark is the result of that work, and now it powers meta ai. 🧵
20K
Zhiqing Sun
@EdwardSun0909
Feb 28, 2025
I successfully defended my PhD thesis today! 🎉 "Scalable Alignment of Large Language Models Towards Truth-Seeking, Complex Reasoning, and Human Values" Slides (Fact-RLHF, Lean-STaR, Easy-to-Hard Generalization, Self-Align, Instructable Reward Model): docs.google.com/presentation/d… A
98K
Zhiqing Sun
@EdwardSun0909
Feb 3, 2025
Excited to finally share what I’ve been working on since joining OpenAI last June! The goal of deep-research is to enable reasoning models with tools to tackle long-horizon tasks in the real world and discover new knowledge. It’s a highly autonomous agent—hand it a hard problem,
Introducing deep research
From openai.com
165K
Zhiqing Sun
@EdwardSun0909
Apr 10, 2025
We’re releasing BrowseComp, which stands for Browsing Competition. 🏎️ Think of it like coding or math competitions — while these contests may not perfectly reflect real-world SWE or mathematical research, they do capture a spark of intelligence. This is THE benchmark we should
OpenAI
@OpenAI
Apr 10, 2025
We’re open-sourcing BrowseComp (“Browsing Competition”), a new, challenging benchmark designed to test how well AI agents can browse the internet to find hard-to-locate information. It’s like an online scavenger hunt…but for browsing agents. openai.com/index/browseco…
473K
Zhiqing Sun
@EdwardSun0909
Jan 27, 2025
Bad take (opinions are my own)
Steven Heidel
@stevenheidel
Jan 27, 2025
americans sure love giving their data away to the CCP in exchange for free stuff
Readers added context
DeepSeek can be run locally without an internet connection, unlike OpenAI's models. github.com/deepseek-ai
134K
Zhiqing Sun
@EdwardSun0909
Aug 14, 2025
Excited to share that I recently joined the MSL team! Building personal superintelligence is serious and fun here. Join us!
Hyung Won Chung
@hwchung27
Aug 14, 2025
After a great time at OpenAI, we (@EdwardSun0909, @_jasonwei) recently joined @Meta Superintelligence Labs. The first month has already been so much fun building from a clean slate with a truly talent-dense team! Very excited about the compute and long term focus of the new lab
269K
Zhiqing Sun
@EdwardSun0909
Dec 20, 2024
honored to have contributed to o3😎
ARC Prize
@arcprize
Dec 20, 2024
New verified ARC-AGI-Pub SoTA! @OpenAI o3 has scored a breakthrough 75.7% on the ARC-AGI Semi-Private Evaluation. And a high-compute o3 configuration (not eligible for ARC-AGI-Pub) scored 87.5% on the Semi-Private Eval. 1/4
101K
Zhiqing Sun
@EdwardSun0909
Jul 16, 2025
You can just do things 🖱️
OpenAI
@OpenAI
Jul 16, 2025
00:00
90K
Zhiqing Sun
@EdwardSun0909
Jan 1, 2025
Challenge accepted — 2025 will be our best year yet!
Sam Altman
@sama
Dec 30, 2024
common themes: AGI agents much better 4o upgrade much better memory longer context “grown up mode” deep research feature better sora more personalization (interestingly, many great updates we have coming were mentioned not at all or very little!)
135K
Zhiqing Sun
@EdwardSun0909
Feb 25, 2025
We’re rolling out Deep Research to Plus users today! Deep Research was the biggest “Feel The AGI” moment I’ve ever had since ChatGPT. And I’m glad more people will experience their first AGI moment! The team also worked super hard to make more tools including image citations /
OpenAI
@OpenAI
Feb 25, 2025
Replying to @OpenAI
We're also sharing the system card, detailing how we built deep research, assessed its capabilities and risks, and improved safety. openai.com/index/deep-res…
49K
Zhiqing Sun
@EdwardSun0909
Jul 18, 2025
just tried and the agent solved level 1 in its own browser lol. thanks for creating the benchmark!
ARC Prize
@arcprize
Jul 18, 2025
Replying to @arcprize
o3 (left) and Grok 4 (right) replays below spoiler: neither complete a single level
106K
Zhiqing Sun
@EdwardSun0909
Jul 17, 2025
Excited to share the agent with the world! It’s a good agent!
OpenAI
@OpenAI
Jul 17, 2025
ChatGPT can now do work for you using its own computer. Introducing ChatGPT agent—a unified agentic system combining Operator’s action-taking remote browser, deep research’s web synthesis, and ChatGPT’s conversational strengths.
00:00
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Zhiqing Sun
@EdwardSun0909
Jul 19, 2025
I heard reinforcement learning only works with verifiable rewards? 😛 Congrats!!
Alexander Wei
@alexwei_
Jul 19, 2025
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).
34K
Zhiqing Sun
@EdwardSun0909
Sep 28, 2025
I don’t often tweet on technical topics but I may have an opposite opinion here…
90K