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Helloooo,
I'm Alex

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XP: experience

thing I like to do w/ my free time:

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Graphene

A visual way to see what you can build next with an agent

Graphene logo: a small tree with one branch pruned, beside the word Graphene

August 2026. Python 3.13, FastAPI, Google ADK, MCP SDK, Textual, SQLite, Cytoscape.js. Apache-2.0.

Graphene on GitHub

I believe that in the near future, whether through new models, better harnesses, or a shift off the LLM frame entirely (Jev, recently), the limit on building software won't be tokens or cost. The limiting factor will be the human intervention and drive it takes to actually get the software out. I know this sounds a little wild. The conversation is still mostly "who has the better model?" and "what's the best harness?" For most applications, though, I think the current models are already completely capable of debugging and fixing the work.

Ok, but not to ramble on too long, that idea is what drove me to build Graphene. No matter how many tokens you have, if you don't say which direction the application should go, the agent has to infer most of it. Graphene tries to bridge that connection between you and the agent. So, not claiming it magically saves 397% of your tokens but (ideally) it should help guide you and the agent toward that perfect idolized application you actually had in mind from the start.

Token-use chart. GPT 6 Astra is third, at 2.3 million tokens, behind only GPT 5.6 Terra and Muse Spark 1.2.
Astra, third-least tokens on that run.
Accuracy versus cost. Jev sits at the far left, near 70 percent accuracy, far cheaper than the other models on the frontier.
Jev, on the cheap end of the accuracy chart.

Astra came in about 10× leaner than Fable 5.1 and 42× leaner than Opus 5. Jev lands in a similar accuracy band at a cost that barely shows up. Tokens and dollars are already getting cheap. The part that still takes a person is knowing where the work should go.

XP: experience

Expandya

Software Engineering Intern

June 2026 – September 2026, Westport, CT

Northeastern University

Teaching Assistant

September 2025 – Present, Boston, MA

O'Hern Lab, Yale University

Computational Biology Research Assistant

June – September 2023 and 2024, New Haven, CT

Alex Lopez beside his research poster at Yale's computational biology poster session

Society of Hispanic Professional Engineers

Undergraduate Ambassador

September 2025 – Present, Boston, MA

Outside the terminal

Running

This week

/ 67 mi

14.2 of 67 miles this week

Honestly the one thing I look foward to the most in my day, which would shock me couple years back. It's really the one time of day where I can just disconnect myself. I still sometimes get butterflies when I'm trying to get a new PR and I really enjoy that feeling of pushing myself. I really see no better way to spend my afternoon than to go for a run on a sunny day. Hopefully gonna qualify for Boston 2028!!!

Check out my Strava

Last 5 weeks

This week · 12.3 mi so far · 2 runs

Latest run, drawn as a route on the canvas: Sep 16, 6.03 miles at 7:45 per mile, 115 feet of climbing, Boston, MA.

Afternoon Run

Golf

I picked up golf recently and I've really been loving it; it's one of those sports that really, really humbles you every single time you step on the course, but that one perfect shot keeps pulling you right back out there.

Alex at the top of a golf swing, in an orange cap

Chess

7 years in playing chess and I still blunder every other move, but add me! Always down to get a quick game in.

Add me on Chess.com

A green chess pawn in front of a knight and a rook

Luna

Chief Code Reviewer.

Luna, a cream lop-eared rabbit, sitting on a rug