Vishnu Rajan Tejus

Founder and CTO, @10x_Science (YC W26) | Researcher, Prof. Carolyn Bertozzi’s Lab @Stanford

[Vishnu Rajan Tejus @vrtejus]

@xuster @10x_Science Incredibly grateful, Jon, for your invaluable support and mentorship. Thank you so much!

[Jon Xu @xuster]

The team at @10x_Science is delivering a huge unlock for drug development by increasing the speed of protein characterization by orders of magnitude. David, Andrew and Vishnu are an insanely talented team working on a huge problem! And they’re hiring.

[Gustaf Alströmer @gustaf]

This is an insanely good team.

[Vishnu Rajan Tejus @vrtejus]

@gustaf We’re so grateful for your support since the earliest days, Gustaf! Thank you very much.

[Aditi Raghunathan @AdtRaghunathan]

We struggled to get monitors to catch reward hacking in agents... so we built a new lens. 🔭

Hodoscope allows you to visualize and audit agent trajectories at scale. Using it, we found a brand new vulnerability in commit0 in just minutes! ⚡️

We're excited to see what you uncover! Use Hodoscope to inspect your own agent trajectories and make your systems more robust. 🚀

[Vishnu Rajan Tejus @vrtejus]

Codex edited our YC launch video in 2 days. Color grading 200 GB of iPhone footage, green screens, audio syncing, captions, etc. Best ROI ever.

[Sam Altman @sama]

Codex weekly users have more than tripled since the beginning of the year!

[Y Combinator @ycombinator]

.@10x_Science is the AI-native solution that pharma companies use to identify viable drug candidates faster, more accurately, and at scale.

Congrats on the launch @DSRoberts007, @vrtejus, and Andrew!

https://t.co/KNEdE2GZcd

[Kamalika Chaudhuri @kamalikac]

I started my career as a theorist, and am now an empirical LLM researcher. In today's blog post, I talk about the parallels between theory and empirical research: https://t.co/7YozHl514D

[Y Combinator @ycombinator]

.@CorelayerAI is the AI on-call engineer for data pipelines.

Their platform monitors both data and infrastructure for issues and uses AI agents to debug and suggest fixes in minutes.

Congrats on the launch, @MRadhuber + @shiprajhahirani!

https://t.co/ZzJbixLVeI

[Vishnu Rajan Tejus @vrtejus]

@ycombinator @gru_space Incredibly excited for you and your growing team, @skyler_chan_!

[Vishnu Rajan Tejus @vrtejus]

@skyler_chan_ @gru_space @ycombinator Skyler, you're an incredible force of nature and your will to execute is unmatched. I'm so excited to know you and follow along on gru's journey.

[Skyler Chan @skyler_chan_]

2025 recap:

>started @gru_space at 21
>raised from the people who backed SpaceX, Anduril, and more
>got into YC, youngest space solo founder
>graduated year early from Berkeley EECS
>published at the world’s largest space conf
>moved into my first office & dream hardware lab
>building my life’s work

2026:

>coming soon

[IT Unprofessional @it_unprofession]

I'm at my sister's house for Christmas and the Wi-Fi here is a disaster. She has 15 people trying to stream on a single consumer-grade router.

Everything was buffering. People were getting frustrated. They started looking at me like I should "jump in and fix the settings."

I didn't even put down my fork.

I told them the issue isn't the router; it's ISP Throttling. I told them that on national holidays, providers "cap the bandwidth" at the neighborhood node to prevent a total grid collapse.

I told them there’s literally nothing anyone can do until the "surge period" ends at midnight.

Is it true? No. I could have easily logged into the router, prioritized my own MAC address, and let everyone else deal with the lag.

But if I "fix" it once, I’m the family Help Desk for life. By blaming a faceless corporation, I killed the expectation of support.

Everyone stopped complaining and started a board game. I went into the den, used my phone as a Private Hotspot, and finished my movie in 4K.

Infrastructure is about control. Management is about making sure you're the only one who has it.

[Vishnu Rajan Tejus @vrtejus]

One of the best written articles about YC founders I've read. Congratulations on the insane traction, @Neha_Suresh_M and @vedhsaka! April is a must-have.

[Y Combinator @ycombinator]

Email, scheduling, rescheduling, time zones— @AprilAssistant can handle it all.

Built by @Neha_Suresh_M and @vedhsaka in just 50 days, April is the AI voice agent making productivity real.

Thousands of paying users already rely on it every day. https://t.co/oVi0Jl8UA7

[Neha @Neha_Suresh_M]

. @AprilAssistant made it to @Forbes !!

[Neha @Neha_Suresh_M]

Meeting with investors who're using @AprilAssistant is great. They already know how good April is, and the calls are mix of product feedback and long term vision!

[Akash @vedhsaka]

Week 4 of @ycombinator - Won this for best demo 🏆

Can wall decor get any better than this?

[Neha @Neha_Suresh_M]

won best demo at @ycombinator group product day and got this pretty dope picture with @gustaf @xuster @iEchoic @matthewriley !

[Maitreyee Wairagkar @Maitreyee_W]

This is an excellent news piece in @Nature by @MiryamNaddaf covering our recent brain-to-voice BCI paper. It aptly highlights the key findings of the study that enabled a man with ALS to speak in real time using the BCI.

[Damiano Sgarbossa @damiano_sga]

Our paper, ProtMamba, is now live in Bioinformatics! 🎉
Beyond the original findings, we've added exciting new results on protein sequence inpainting and modeling of disordered regions. Read it here: https://t.co/alEUZrKPEC

https://t.co/IryE6wvjM5