Startup Launch

Startup Launch · Launch Video Breakdown: Hook, Pacing & Motion Design

Introducing Cortex Harness, a platform for running AI models on real robots with remote human guidance. Prompt a robot to act. Steer it with language. Let a human take over remotely when needed to ke

YC LaunchYC LaunchYCOctober 10, 2026@cortexairobot
0:00 · The Hook · Introducing Cortex Harness
0:00 / 0:00

Scene-by-scene timeline & spoken transcript

  1. The Hook

    Introducing Cortex Harness

    “(No spoken dialogue — mysterious orchestral synth pad transitions to driving electronic beat with pizzicato synths and sub-bass)”

    On screen
    INTRODUCING Cortex Harness Models act. Humans step in.
    Camera
    Static shot, centered text.
    Motion
    Text fade-in and subtle scale animation.
  2. Product Reveal

    Model Selection & Task Assignment

    “(No spoken dialogue — driving electronic beat continues with pizzicato synths)”

    On screen
    01 / MODEL + TASK Choose a model. Give it a task. GPT-6 Astra Medium GPT-6.1 Sol Medium Claude Fable 5.1 High Claude Opus 5.5 High Gemini 3.8 Flash DeepSeek v4.1 Flash MolmoAct2 pi0.5 Effort Low Medium High Extra high Options Ultra fast stack the cups with largest at the bottom GPT-6 Astra Medium Ultra fast CortexAI LIVE • RTT 75.8 ms Connected POLICY left right top Adjusting calibration metrics I need to calibrate some metrics related to a design element. It involves converting cups to pixels, specifically from dimensions of 212 by 310 to 449. I should keep the arms parallel and move the top up while positioning the y-axis to the left. It seems there's an approximate right measurement of 492.183 compared to the cup's 449.125. I'll likely adjust x by .40 and y by .065, and incrementally check adjustments for z at .16. Running action The yellow cup is largest, the purple cup is medium, and the blue cup is smallest. I am bringing the right gripper toward the purple cup first so it can be placed inside the yellow one. Thinking... Take control Add guidance for the current task... GPT-6 Astra Medium Ultra fast Episode 00:18 Save N Discard B Cortex Harness
    Camera
    Screen capture with UI interactions, slight camera zoom on specific UI elements.
    Motion
    UI element highlight, text typing animation, smooth transitions between UI states.
  3. Feature Teaser

    Language Guidance & Model Retries

    “(No spoken dialogue — high-energy audio transition/riser at 0:23, driving electronic beat continues)”

    On screen
    Steer with a prompt. 02 / LANGUAGE GUIDANCE Steer while the robot is working. Cortex Harness The tilted approach reached the intended height. I will verify the fingers surround the purple cup before closing them. The purple cup is between the open fingers at sidewall height. I will close the jaws gently around it. The gripper stopped partway closed, consistent with contact on the cup. I will lift vertically and reduce the tilt before moving toward the yellow cup. use your Take control GPT-6 Astra Medium Ultra fast Save N Discard B use your free hand to get a better v POLICY right top modest backward tilt should allow the fingers to reach the cup's sides. The tilted approach reached the intended height. I will verify the fingers surround the purple cup before closing them. The purple cup is between the open fingers at sidewall height. I will close the jaws gently around it. The gripper stopped partway closed, consistent with contact on the cup. I will lift vertically and reduce the tilt before moving toward the yellow cup. Queued - waiting for the next planning call Thinking... Add guidance for the current task... GPT-6 Astra Medium Ultra fast CortexAI LIVE • RTT 62.8 ms Connected POLICY left right top Cortex Harness The model changes its view and retries. oerore irung again. The side view now shows the pads contacting the purple cup below its rim. I will lift without changing its tilt to avoid disturbing the grasp. Calculating coordinates I'm trying to determine some coordinates here! I'm looking at a y-coordinate of 0.28 with a pixel shift of 1.45 and a scaling of 600 px/m. After some addition, I find it's about 0.286. For the x-coordinate, I check a yellow center at 1.14 versus a purple at 1.25, which adds a little adjustment. So I'm targeting an x of 0.395, a y of 0.275, and a z of 0.17. I am verifying that the purple cup is clear of the table before carrying it over the yellow cup. The purple cup is securely lifted. I will carry it toward the yellow cup while moving the free hand aside for clearance. Thinking... Take control Add guidance for the current task... GPT-6 Astra Medium Ultra fast Episode 02:15
    Camera
    Static text screen, then screen capture with UI interactions, showing robot camera views.
    Motion
    Text reveal, UI element highlight, text typing animation, smooth transitions between UI states.
  4. Call to Action

    Human Intervention & Autonomous Continuation

    “(No spoken dialogue — high-energy audio transition/riser at 0:34, dramatic orchestral build-up, significant sub-bass drop/impact at 0:56)”

    On screen
    03 / REMOTE INTERVENTION Take control when the model needs help. Cortex Harness CortexAI Activities Cortex Harness Oct 2, 12:00 Cortex Harness LIVE • RTT 34.3 ms Connected POLICY left right top pick the battery up and place it into the slot. The loose upright battery is to the right of the holder. I am moving the right gripper forward and slightly left toward it. I will close the jaws around it. Adjusting movement parameters I'm figuring out the grip positions! I need to adjust from x=0.25 to x=0.35, y=0.20 to y=0.30, and z=0.10 to z=0.20 for a better perspective. I believe it involves the image down and to the left. I will adjust the gripper's orientation to align with the battery, moving it to .48 for x, .365 for y, and .08 for z to get everything aligned properly. This is a very precise movement. I am now moving the right gripper inward relative to the loose battery. I can refine the approach. The battery is now between the open jaws and is nearly centered. I will close the jaws gently around it, then move the forward and upward to upper half. Adjusting grip parameters I'm determining the need for a battery, perhaps at 0.01! I think the top jaws should grip around 0.48 and at the top of the fingers around 0.52. I will adjust the gripper's orientation to align with and the bottom of 0.45. I also need to consider that the grip might be too wide, so I will adjust to make the right y by 0.007. Now it's centered at the wrist's right. I need to check the battery-to-jaw alignment before descending and closing the jaws. The battery is slightly right of center and the jaws are still open. I will adjust the gripper's orientation for better correction and lowering the open gripper to surround it. Thinking... Add guidance for the current task... GPT-6 Astra Medium Ultra fast Episode 00:19 Save N Discard B Take control Hand control back. The model resumes. 04 / AUTONOMOUS CONTINUATION Hand control back. The model finishes the task. Activities Cortex Harness Oct 2, 12:10 Cortex Harness LIVE • RTT 39.3 ms Connected POLICY left right top Adjusting grip parameters I'm evaluating the need for a battery, perhaps at 0.01! I think the top jaws should grip around 0.48 and at the top of the fingers around 0.52. I will adjust the gripper's orientation to align with and the bottom of 0.45. I also need to consider that the grip might be too wide, so I will adjust to make the right y by 0.007. Now it's centered at the wrist's right. I need to check the battery-to-jaw alignment before descending and closing the jaws. The battery is slightly right of center and the jaws are still open. I will adjust the gripper's orientation for better correction and lowering the open gripper to surround it. Thinking... Add guidance for the current task... GPT-6 Astra Medium Ultra fast Episode 01:17 Save N Discard B Adjusting battery placement It looks like the battery at x=0.40 y=0.40 might be obstructed. The left gripper is at x=0.30 y=0.30. I will adjust the right gripper to x=0.45 y=0.45 for the front right and at x=0.37 y=0.37 and the battery's top at x=0.48 y=0.48. I will adjust the gripper's orientation to align with the battery, a larger y=0.50 for the battery. I believe it's 0.10 at the same x,y,z with a 0.17 at the same x,y,z. I will adjust to 0.085. I am now moving the right gripper inward relative to the held battery and the holder before lowering into the socket. The side view now shows the battery still above and a little outside the holder. I will lift without changing its tilt to avoid disturbing the lowering slowly toward the world's right. I am verifying that the battery is clear from both overhead and the side before lowering the battery to seat. The battery is just above the front right socket, slightly inward and slightly above. I will lift vertically and reduce the tilt before lowering slowly toward the world's right. I will check whether the battery's base is entering the slot and whether it is upright before releasing it. The battery is upright but still a little higher than the adjacent socket. I will release it gently so it can settle into the socket. It seems all that an adjust my strategy to manage my remaining calls and to ensure the battery is placed correctly. I'm thinking about what's next. I have to see how I can improve this. I'm moving forward! I'm considering my budget, and it looks like I have around 10 calls remaining, but I've only got 1.0 remaining. So, I think I need to make sure I'm using my calls effectively. I want to ensure the battery is placed effectively. I want to ensure I'm getting the most out of what I have left. I'm thinking about how to optimize my remaining calls. I am checking the final seating height and ensuring the battery is fully seated before releasing it. The battery is down in the holder and remains upright. I am lowering the jaws gradually so it can settle without being disturbed. I am checking whether the battery remains standing as the grip releases. The battery is upright as the jaws loosened. I am opening them further to clear the sides before withdrawing. The gripper is now open. I am lifting it straight clear of the holder. I will verify the battery is fully seated without disturbing it and get a final clear view. Thinking... CortexAI Cortex Harness Real robots. Human supervision. cortexrobot.ai
    Camera
    Screen capture with UI interactions, inset video of human operator, then final static logo screen.
    Motion
    UI element highlight, text typing animation, picture-in-picture, smooth transitions between UI states, logo reveal with subtle scale.

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