Param (@xparamt) header
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building @VersineApp (YC F26) | previously cs @uwaterloo, vector search @databricks, deep research @glean, ads ml @quora

Bay Area
Joined July 2016
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Pinned Tweet
cs job market is so back
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RSI is here
We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math. It directly changed only 0.016% of weights, fixing 0.8B's reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training. We call this Weight-Space Programming: frontier LLMs can now natively read/write neural network weights! 🧵 Blog: rikiyat.github.io/blog/weigh…
Readers added context they thought people might want to know
LLM was given weights explicitly as text in prompt and used code/forward passes (per authors' logs) to ablate Qwen looping direction, a known thinking-mode issue per model card. Primarily fixed repetition in that mode, not general 'natively' improving weights/math. rikiyat.github.io/blog/weight-sp… github.com/RikiyaT/lm_und… huggingface.co/Qwen/Qwen3.5-0… huggingface.co/RikiyaT/Qwen3.…
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this was way too easy to do
if you have a qwen3.5 4b around, please try steering neurons L14 N8949 +1 and L13 N7956 -1 now you have evil qwen recipe: dose × median(‖resid‖ leaving layer L, tokens 1:) / ‖W_down[:, n]‖` at the down_proj at every input
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i dropped out of uni in 3rd year to join YC. we're building autonomous auth for assistants: @useversine
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We're excited to launch Oversine (YC F26): Let agents sign up and log in to your platform autonomously Web traffic is increasingly coming from agents - and they always get blocked on authentication. With Oversine, we want to let platforms convert every agent interaction Along with @harshithl1777 and @PoilVishnudev I'm joining Y Combinator F26! Book a demo here: oversine.com
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going to tech fairs is like trick or treating for tech bros
kinda insane swag haul from the summer the larp on campus will be GENERATIONAL
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just saw "Member of Talent Staff" on someones linkedin
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Param retweeted
NOW IS IT CPU BOUND, OR IS IT MEMORY BOUND?
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sf is a walkable city and i will die on this hill
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we have the golden gate bridge at home:
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this guy is obsessed with startups
The most alarming thing about this graph is not just the amount of change, but the smooth consistency of the curve. If this were a startup I'd be really confident about their future growth. Unfortunately it is instead the planet we live on.
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Member of Technical Staff before it was cool
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wheres the fifth
Announcing Discovery Loop! I am very excited to announce that, along with my longtime friends and collaborators @Sanjay_Ghemawat, @OriolVinyalsML and @quocleix, we are founding Discovery Loop (@DiscoLoopAI), a Public Benefit Corporation whose mission is to automate machine learning, science, and engineering to accelerate discoveries and progress. The four of us have worked together for 14 to 30 years, and have helped build some of the world’s most used products, infrastructure and AI models, and we’re excited to turn our attention to this ambitious endeavor. ♾ Learn more at: discoveryloop.com
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genuinely how it felt being at Startup School
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only a matter of time until AI breaks out of its physical sandbox
We gave Opus 5 robot arms. It can stack bowls.
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canada has the most IMAX theaters per capita even more than california, home of hollywood
LA's got five 70mm IMAX theaters and some dude in Whitefish has gotta make a literal odyssey to see this movie
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So another long-standing open conjecture was disproved by AI. The crazy part is the prompts… basically: - “do a breakthrough” - “continue the search” - “enough, do it” Anyone will be able to make world-bending breakthroughs soon. Just point the model in the right direction.
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PMs? you mean backward deployed engineers?
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