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Michael Elabd
@MichaelElabd
Co-founder @TrajectoryLabs Ex-Research @DeepMind, @Google, @Stanford
396 Following    2.3K Followers
As the agentic world moves towards more specialized workflows, efficiency becomes very important! A librarian who has been working at the same library for 30 years doesnt need to look up skills for how to answer a question or search through her tools to know that the library opens every day at 9 am! Same for agents! As agents specialize, they should become way more efficient at solving tasks. Thats why I am really excited about our research on intelligence density. The goal here being how do you get models to perform better on tasks with higher token efficiency!
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There’s a good chance your open source model is costing more than the frontier. Cheap tokens ≠ cheap tasks. Here, we introduce Intelligence Density, and Density Aware Training, our post-training technique to achieve less wasted compute, better learning, all with no knobs to tune. Enabled by default in every Trajectory model.
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I made a list of great startups to join. It's called the Breakout List. The list has 92 companies. These are the 20 with 25 or fewer employees: - Hone (@moritz_stephan, @CarloWillem, @oqbrady) - Normal (@ansonyuu, @hudzah) - Standard Intelligence (@G413N, @devanshpandey) - Tacit Labs (@ninklefitz, @AmDroste) - American Terawatt (@atroyn, @rslparker, @aranibatta) - Conduit (@clemvonstengel, @riopopper) - Convergent (Omkar Savant, Vivek Katara, @debnilsur) - Core Automation (@MillionInt, @_arohan_) - Engram (@dan_biderman, @EyubogluSabri, @realJessyLin) - Instinct (@noahrshinn) - Keenable (@styskin, Matthias Petri) - Lumaril (Mark Elliot, Ben Duffield) - Neion Bio (@Dimkell, Sam Levin) - Pangram Labs (@max_spero_, @bradley_emi) - Quadrillion (@echinaceous) - Re (@karnsaroya, @AnandDhillon, @thecliffwhite, @benaneesh) - Ricursive (@annadgoldie, @Azaliamirh) - Sail Research (@neilmovva, @blintzbase) - Trajectory (@rronak_, @michaelelabd, @QuantumArjun) - Watney Robotics (Sean Cheong, Ryan Gannon) Picks from Elad Gil, Charlie Songhurst, Keith Rabois, Mike Vernal, Alana Goyal, Sonya Huang, Ramtin Naimi, Marc Bhargava, Cory Levy, Aashay Sanghvi, Konstantine Buhler, John Luttig, Varun Gupta, Ray Tonsing and Avichal Garg. Disclosure: I'm a small investor in American Terawatt, Convergent, Standard Intelligence and Trajectory (in this post), and in Factory, Physical Intelligence and SF Compute (elsewhere on the list). I didn't vote. The full list is on Breakout List.
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Love the visualization, super clean way to describe the research! Super impressive work @neilkale @j316chuck
At Trajectory, we're constantly implementing and building upon the latest research ideas on the path to continual learning. We wish we had the time to share all of them, but here's a quick glimpse on our explorations with PiSSA, and choosing the right trainable geometries for agentic RL.
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At Trajectory, we care about storytelling. The storytelling about continual learning, the storytelling about the research breakthroughs it’ll take to get there, and the storytelling about the product that we need to will into existence. Brand is part of how we tell it. Here’s a behind-the-scenes look at the work we did with @metalab to craft ours
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If you haven’t already, you should watch this fireside chat by @QuantumArjun and @MichaelElabd on continual learning Just happened at @spc
@KJHMiao and I held a post-training fireside chat with the @trajectorylabs team to discuss their vision for continual learning. I particularly liked the distinction between "experience" and "IQ". Another strong reason why so many firms these days are emphasizing the importance of AI that you own! 00:00 Intro 00:34 Where the continual learning vision came from 07:03 Why a platform instead of forward-deployed engineers 14:23 Where the name Trajectory came from 19:53 Labs optimize for IQ, we optimize for experience 25:14 Continual learning without touching the model 32:06 Hot take: the most underrated part of post-training 36:45 AI natives vs tech natives vs enterprises 42:58 The magic moment: wake up and it's smarter 45:09 Three possible worlds
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Intelligence and Experience are orthogonal vectors Terence Tao is perhaps the world’s smartest person, but drop him into an accounting firm or onto a construction site and on day one he’s not going to be very productive @trajectorylabs calls this The Experience Gap, and they have a way to close it @QuantumArjun explained how at our Sovereign AI event: 00:00 Introduction 00:12 Building the platform for continual learning 01:33 The experience gap: models have IQ but no tenure 02:52 Traceability → model spec → better models and harnesses 05:27 Four wishes for the agent ecosystem 06:34 Wish 1: Trace the whole tree — and capture the corrections 08:03 Wish 2: Evals from real traffic, graded in the real harness 09:26 Wish 3: Let the agents cook, and make tool responses informative 10:34 Wish 4: Get comfortable on open weights, experiment with routers 11:51 Why owning your intelligence shouldn't be consulted away 13:15 Demo: import a benchmark, train a model, deploy it 14:28 Q&A: What's the trainable object — weights, harness, or context? 16:08 Q&A: Continual learning without training on customer data 17:13 Q&A: Episodic memory and the hierarchy of feedback 19:37 Q&A: Where continual learning matters most
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Intelligence Density or intelligence per token is one of the most important metrics for specialized intelligence. As each company starts to own their own intelligence, doing a task right doesn't become the only goal but how efficiently the agent can complete the task. Really excited about the research coming out of Trajectory on how to make models have way higher intelligence density!
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Continual learning is a bet that the retraining loop will get cheaper over time. With larger models, you can maybe run this loop once every few weeks. But with smaller models, you can run it nightly, per customer. And it keeps recursing: a model per company, then a model per client that company serves, then per matter. We’re getting closer to intelligence cheap enough to meter. On the path to this, we received early access to, and post-trained @nvidia's Nemotron 3.5 Lightning on @harvey LAB. One click on the Trajectory platform, no new engineering. 0% to 8.3%, above Opus 4.6 at 6.6%.
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banger after banger from TML! I dont understand how Inkling Small >> Inkling
Today, we are releasing Inkling-Small. Inkling-Small achieves comparable performance to Inkling at a quarter of its size. It features 276B total parameters, 12B active. We are making the full weights available. Fine-tune it on Tinker today, or chat with it in text, image, and audio on Tinker Playground.
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Solving for whole body control🤸 and dexterous manipulation 🦾 is probably one of the hardest co-optimizations anyone could attempt! It’s a trade-off: tying knots, threading a needle, etc. comes at the cost of coordinating a full humanoid frame: bending, reaching, etc. Usually when you push for one you lose the other Really cool to see Gemini Robotics move the pareto frontier forward (WBC x DM) by delivering a model that does both in a single system!
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One brain. For any robot. 🤖 We’re launching Gemini Robotics 2: our next-generation physical AI bringing full body intelligence to humanoids, advanced dexterity, multi-robot teamwork and more.
Highly encourage builders to use embed to accelerate your vision! Working with the @conviction team has been amazing!!
applications for Embed now open, due 8/10 Embed is a Schelling Point for the best early stage founders. cash, compute, community, & a catalyst past participants were dropouts, leading researchers and repeat founders alumni have raised more than a billion dollars links in🧵
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Trajectory just signed the call for Open Weights 👀👀 For enterprises, open weights means you can run models on your own terms, adapt them to your data, and ship without betting your roadmap on another company. In other words, its the difference between renting and owning intelligence! Also, for science, having open weight models allows scientists to build compounding insights, to not just stand on shoulders of giants but to propel scientific advances at an ever-growing speed! Thats why we at Trajectory are very proud to have signed the call for Open Weights and are very excited to keep pushing the frontier with our partners!
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We're excited to sign the call for Open Weights. We believe the best way to create something enduring is to start with the future you believe is coming, then work backwards. We think the future is one where every product has its own intelligence, shaped by its users, its workflows, and everything it learns after it’s deployed. We’re building the experience layer for that future, and the products to bring that control into everyone's hands. However, in almost every path we can imagine to that future, open weights play a major role. Not because every model will be open, but because they give builders ownership over one of the most important layers of the stack. The more capable open models become, the more ambitious the products built on top of them can be. We’re excited to do our part to help make that future happen.
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Inkling is our first open model from @thinkymachines and is now available on Tinker! Check out these quotes from Tinker customers on their experience with Inkling: @_Mantic_AI: "Not only does Inkling outperform Kimi K2.6 on our forecasting evals, it does so with half the output tokens." @trajectorylabs: "We’ve been impressed by how sharp and efficient the model is. Its reasoning is concise, its tool calling is consistently strong, and it holds up well on complex, long-horizon agentic tasks. It feels like a meaningful unlock for what teams can build with open-source models designed for customization." @lightningrodai: "We came away impressed by the model’s underlying reasoning ability. It’s thoughtful, original, and refreshingly unsycophantic.”
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A model drop by Thinky 🚨🚨 Have been doing some early testing on the model for the past couple of days. Here are some of my findings 1. The reasoning is sharp and concise! Always love to see models that dont ramble 2. Tool calling is beautifulllllll, Its consistent, clean, very well designed for streaming , multi-tool call per step, etc.! 3. Holds up impressively on agentic tasks. In my testing, I was particularly impressed with its ability to run long-horizon tasks with solid error recovery. 4. Most importantly, it was built from the ground up for post-training and customization and this is a real unlock for teams building on open source!! This will be greatly beneficial for continual learning workflows at @trajectorylabs! Amazing step for American OSS models, really excited to keep "tinkering" with it lol
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🇰🇷🇰🇷🇰🇷 🥩🥩🥩 Hosting a researcher dinner at ICML this Thursday! DM me if you would like an invite 📩
Trajectory x Conviction dinner @ ICML! Thursday night @ Michelin star KBBQ 🥩 Few spots left, dm if you’d like to join to chat about the continually learning products of the future 🚀 @trajectorylabs 💜
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We’re excited to introduce Taste Labs. Our mission is to end AI slop. We’re building the data and infrastructure layer to give AI models and agents taste. And today we’re coming out of stealth, announcing our $18.5M seed funding, co-led by @CRV and @AmplifyPartners AI has nailed objective domains and made it easy to generate anything. But it still feels off. Now, the challenge is judgement. What fits, what feels like you, what’s GREAT. This requires turning a fuzzy, subjective domain into something we can measure and codify. We’re starting with design. There are two sides to cracking this, the foundation model layer and the agent layer: - We’ve already been working with the top frontier labs to evaluate and improve their models, crafting the right post-training data and RL environments. - We’ve also been working with app-layer companies to build the context and verification tools for their agents to produce better, more on-brand, more creative outputs. We want a future where AI feels right. If you’re passionate about this mission, join us!
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🚨🚨 The platform for continual learning is coming together! We are now able to post-train frontier models to break the pareto frontier in under 24 hours
1/ We post-trained @nvidia Nemotron 3 Ultra on @harvey Legal Agent Bench in under 24 hours. The result: an open model reaching the same band as leading closed models on legal work, at a fraction of the cost. The correlating story: when a new open model ships, Trajectory can turn it into a specialized agent almost immediately.
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At Trajectory, our goal is to bring continual learning to every company. That means training on production data as it actually arrives: one task, one trajectory, often stale with respect to the current model. Making SDPO work on long-horizon agentic tasks is a major step toward env-free RL and real online learning!
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5 Days of Trajectory 🏹Day 5: Scaling SDPO to Agentic Tasks Continual learning means you must train on data from production. But production gives you one example per task. A user makes a request once. You get one trajectory, not a batch. However, current RL algorithms don't work that way, They need groups of tasks. By definition, that means you need some artificial environment to perform those rollouts in. But what if you don't? SDPO is a promising route. It learns from a single trajectory, with no group required and failures still producing signal. The shape of the method matches the shape of production data. But one fundamental problem remained. Every published SDPO work assumed fresh, on-policy rollouts. Agentic work cannot give you that. Trajectories run for an hour or more and arrive stale. On true agentic tasks, naive SDPO collapses. We fixed it. We're the first to make SDPO work on agentic tasks. On Mercor's APEX-Agents, with hour-long trajectories and near-zero base pass rates: 25% average reward, 5x over zero-shot. More importantly, it trains stably and the curve is still climbing. Read more below.
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Day 4 of Trajectory!!!!!! For today, we are showcasing our vision to the world. What will the world look like? Where do product companies fit into this world? How will software change and evolve over time? Beautiful writing by our @QuantumArjun, really crisp telling of how we think the world will evolve.
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🏹 5 Days of Trajectory. Day 4 - Why We’re Building Trajectory AI is the most capable software ever built. You correct it. You teach it what you want. However, the next session starts, and the learning is gone. This is deeply unnatural - nothing intelligent works this way. Today, we’re sharing the thesis behind Trajectory: - why continual learning is the next platform shift in AI - why the primitive governing that shift is the trajectory - our plan to move products from being shipped to being grown: first make the intelligence layer better, faster, and cheaper; then make it shapeable; finally, make it learn Read more below⬇️
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We’re taking a quick break for the 5 days of Trajectory, but wanted to take this time to say that we’ve been named to @Redpoint’s 2026 Infrared 100 as one of the companies shaping the future of AI infrastructure. We're so grateful for the recognition so early in our journey, and want to congratulate the other awardees as well!
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