
Sumble co-founder and CTO. Learning high-quality, structured data about the world. Formerly @kaggle
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Joined March 2009
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Wordle xxx 1/6
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Get Wordle right on your first guess using the daily ⬛🟨🟩 tweet distribution kaggle.com/benhamner/wordle-…
if they cared about student outcomes would’ve spent the $557m on gpus
The “AI escape the box” experiment was comically naive in hindsight. There is no box. Instead, there’ll be embedded access to every critical system in the world
What will engineering productivity look like in a year once a high fraction of codebases are written by Claude Code/Codex and no human has a detailed understanding of these parts anymore?
Ben Hamner retweeted
Excited to share more publicly what @benhamner and I have been working on:
techcrunch.com/2025/10/22/su…
We are building a knowledge graph for GTM data & have early customers such as @elastic, @figma and @Snowflake
WOW - cold inbound hiring processes are the worst I've ever seen it:
- Huge volume of applications (probably triggered automatically)
- Large volume of fake resumes
- Extensive use of AI assistants in phone screens
You could release a crazy stat on the number of times (and number of employees) ClosedAI companies have downloaded open models from HuggingFace
Replying to @KamStaszewski
All closed-source frontier labs use tons of open-source all over the stack, starting from python, @PyTorch, @huggingface all the way down to RoPE, GQA, flash-attention, or any tiny improvements released by open-source players.
The whole transformers architecture (the T in gpT) comes from an open research paper and open-source model from 2017: huggingface.co/papers/1706.0…
This is ok but would be much nicer if they would acknowledge the contributions & contribute back more!
Ben Hamner retweeted
Kaggle launched an LLM eval product kaggle.com/benchmarks
This has the potential solve the biggest challenge in the LLM ecosystem: strong and diverse evals
Getting a bunch of 429 rate limit errors with a quota exceeded message from @OpenAI's API, in spite of being well under quota and published rate limits
Just had the most obnoxious interaction I’ve had in a long time
Jogging in quiet Palo Alto neighborhood. Middle-aged man and woman block away walking towards me
Half a block away they start screaming “RUN ON THE FUCKING STREET SIDEWALKS ARE FOR WALKING NOT RUNNING. GET OFF THE FUCKING SIDEWALK ITS A FUCKING SIDEWALK NOT RUN”
Marimo's a delight to use for both exploratory Python notebooks and rapidly prototpying reactive data applications with a rich UI.
It's replaced Jupyter notebooks for me. Excited to see what Akshay and team build from here!
My co-founder @themylesfiles and I have started Marimo Inc. to keep building the @marimo_io notebook and other Python data tools.
We've raised a $5M seed round led by @antgoldbloom and @shyammani_ at @aixventureshq.
Excited for the journey ahead!
marimo.io/blog/seed-announce…
Ben Hamner retweeted
Looking at job posts over the last year, it looks like Amazon is making the broadest AI investment. 228 teams across the company posted jobs with GenAI projects over the past year, considerably more than any other company. blog.sumble.com/companies-wi…
Most interest is the breadth of teams and use cases. They made posts from the core research teams, Alexa, customer service, seller experience, fulfillment, and catalog selection teams (full list: sumble.com/l/JrsA4zNSp4).
Some examples:
- Creative X Team: generating high-quality text, images and video for advertisers (sumble.com/l/EHF2RZQRYD)
- Geospatial Science Team: for global address parsing and validation (sumble.com/l/h7GWV4t9JU)
- Selection and Catalog Systems Team: improve the completeness and correctness of product data for Amazon shoppers (sumble.com/l/uaddsqaD4v)
Fast hack to improve the factual accuracy of your LLM calls? Multi-LLM and consensus (e.g. majority voting) across them among the leading foundation models
Ben Hamner retweeted
The overlooked GenAI use case: cleaning, processing, and analyzing data.
blog.sumble.com/the-overlook…
Job post data tell us what companies plan to do with GenAI. The most common use case is data analytics projects. Examples:
- AstraZeneca: using LLMs on freeform documents to structure results from their Extractables & Leachables testing (sumble.com/l/FgehjrgnvN)
- Trafigura: The Document AI team is using LLMs to extract data from a corpus of commodity trading documents to generate credit reports
(sumble.com/l/6bY7mhyAHd)
The startup ecosystem is overlooking this use case, instead focusing on other areas such as customer support, sales & marketing and code gen.
10 data quality challenges in relational tables:
1. Duplicates
2.
3. Duplicates
4. Cḧarαctěr Énçødïng
5. 1/1/24 (ambiguous dates)
6. 7am (ambiguous times w/o timezones)
7. John A. Smith, john smith (fuzzy joining)
8. asdfasdfa junk record
9. Company: Apple Url: google.com
10. location: Franklin











