Jonathan Lee
@jon_lee0
Followers
782
Following
152
Media
1
Statuses
29
research @GoogleDeepMind. co-developed gemini deep think. co-led model training for IMO 🥇 | prev: RL PhD at @StanfordAILab
Mountain View, CA
Joined July 2025
I’m excited to share the news of Gemini Deep Think’s gold-medal level performance 🥇 at the International Math Olympiad! It has been an absolute blast building Deep Think this year and then scaling it to the IMO.
An advanced version of Gemini with Deep Think has officially achieved gold medal-level performance at the International Mathematical Olympiad. 🥇 It solved 5️⃣ out of 6️⃣ exceptionally difficult problems, involving algebra, combinatorics, geometry and number theory. Here’s how 🧵
11
11
108
Continuing our IMO-gold journey, I’m delighted to share our #EMNLP2025 paper “Towards Robust Mathematical Reasoning”, which tells some of the key stories behind the success of our advanced Gemini #DeepThink at this year IMO. Finding the right north-star metrics was highly
Very excited to share that an advanced version of Gemini Deep Think is the first to have achieved gold-medal level in the International Mathematical Olympiad! 🏆, solving five out of six problems perfectly, as verified by the IMO organizers! It’s been a wild run to lead this
14
112
709
We evaluated Gemini 2.5 Deep Think on FrontierMath. There is no API, so we ran it manually. The results: a new record! We also conducted a more holistic evaluation of its math capabilities. 🧵
23
95
640
Super excited to share Gemini Robotics 1.5!! Our high-level reasoning model Gemini Robotics-ER 1.5 is also publicly available now! The model is particularly strong at spatial and temporal reasoning, and can use thinking to improve its answers 🧠🤖
We’re making robots more capable than ever in the physical world. 🤖 Gemini Robotics 1.5 is a levelled up agentic system that can reason better, plan ahead, use digital tools such as @Google Search, interact with humans and much more. Here’s how it works 🧵
1
2
10
📢The next milestone for intelligent general-purpose robots has arrived! Announcing Gemini Robotics 1.5, our flagship system which brings breakthroughs from frontier models to the physical world with two new SOTA generalists: the GR 1.5 VLA and GR 1.5 embodied reasoning model 🧵
6
36
183
Amazing work by the team! Another gold-medal level performance from a version of Deep Think 🚀
An advanced version of Gemini 2.5 Deep Think has achieved gold-medal level performance at the ICPC 2025 - one of the world’s most prestigious programming contests. 🏅 Building on the model's success in math at the IMO, this marks another historic milestone for advanced AI. 🧵
1
0
22
I’m excited to announce that an advanced version of Gemini Deep Think achieved gold-medal level performance at the 2025 ICPC World Finals, one of the world’s most prestigious programming competitions! 🥇Learn more in our blog post: https://t.co/BRkpQ71SLf An inspiring moment for
deepmind.google
Gemini 2.5 Deep Think achieves breakthrough performance at the world’s most prestigious computer programming competition, demonstrating a profound leap in abstract problem solving.
12
47
330
Few people are aware of how good Gemini Deep Think is. It's at the point where "Should I ask an expert to chew on this or Deep Think?" is often answered with Deep Think. GPT-5 Pro is more "intellectual yet idiot" while Deep Think has better taste. I've been repeating this a
34
42
544
I think this is one of the interesting situations where considering multiple hypotheses (à la Deep Think) is good. (does someone have gpt-5 thinking or pro results?)
2
5
33
Genie 3 feels like a watershed moment for world models 🌐: we can now generate multi-minute, real-time interactive simulations of any imaginable world. This could be the key missing piece for embodied AGI… and it can also create beautiful beaches with my dog, playable real time
267
533
5K
Love surprises like this whenever exploring the frontier of a new model
For the first time ever, an AI has managed to derive a generic "foldr" function for N-tuples in the λ-Calculus. It was Gemini Pro 2.5, with Deep Think. All other models fail to do so, including o3 and Grok 4. Nice progress @GoogleDeepMind
0
0
7
I think we are <12 months away from an AI model making novel math discoveries for simple unproven conjectures and <24 months away from "rudimentary" self-improvement of LLMs (perhaps saturating after 2-3 iterations of self-improvement) The future is thrilling
See mathematician Michel van Garrel talking about how our latest Gemini Deep Think model was able to prove a conjecture using a very different approach than he was considering.
19
47
502
Following its IMO gold-level win, @GoogleDeepMind is sharing Gemini Deep Think with mathematicians for feedback. Excited to see what they discover! 🧠 Plus, an updated Gemini 2.5 Deep Think is now rolling out for Google AI Ultra subscribers. Learn more:
blog.google
Deep Think utilizes extended, parallel thinking and novel reinforcement learning techniques for significantly improved problem-solving.
14
23
306
The voxel pagodas have a special place in my heart 🌸 It's been my go-to vibe eval since early Deep Think development. Glad it made it into the demo!
2
2
39
Magically achieved sota? That is because we believe in our model and also because of divine benevolence 😃
Our IMO journey continues: the yolo run model that we trained a week before #imo2025, despite all possible likelihood of failures, magically achieves SOTA across a wide range of reasoning tasks from maths, to coding, and challenging knowledge. I'm very excited that we have now
11
11
132
Deep Think is finally here! You can now try (a faster version of) the model that won gold 🥇 at IMO. The most exciting part about the IMO model is that it's so much more than just a math model. It's great at general reasoning, coding, and creative tasks!
4
13
120
The Gemini Deep Think model that achieved IMO gold medal 🥇 is launched! This is a general purpose model that is not only SOTA at math/proofs but also reasoning, code and many others! 🔥 The exact config that achieved IMO gold with scaled up Deep Think is being made available
We’re bringing a version of Deep Think that achieved gold-medal status at IMO to Ultra subscribers in the @Geminiapp (+ the official version is now in the hands of mathematicians). Toggle it on when reasoning through complex scientific literature, tackling a coding problem that
18
35
419
For researchers, scientists, and academics tackling hard problems: Gemini 2.5 Deep Think is here. 🤯 It doesn't just answer, it brainstorms using parallel thinking and reinforcement learning techniques. We put it into the hands of mathematicians who explored what it can do ↓
140
491
3K
Gemini 2.5 Deep Think is out!! We were able to improve the model substantially since our announcement at I/O, and it is a faster variation of the system that got Gold 🥇at IMO (still getting bronze level performance🥉!!) The model is p good at detailed creative tasks too!
14
21
293
Very thankful to have worked with this amazing team! And there is still so much more ahead.
Right before #imo2025, together with colleagues from Mountain View, NYC, Singapore, etc, we all gathered at @GoogleDeepMind headquarter in London for our final push for IMO. I believe that week was when all magic happened! We put all individual recipes (that we figured out
0
1
16