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Lex

@notesbylex.com

Senior MLE at @Canva. Full-stack developer. Talks about Software dev, LLMs, Agentic Reasoning, Obsidian, note-taking, dog photos.

Posts Replies Media

Lex @notesbylex.com · 02/06/2025

This new image editing model from Black Forest Labs called **FLUX.1 Kontext** is really good. I ran some experiments on photos of Doggo, and couldn't believe how well it could maintain character consistent across multiple turns of editing. notesbylex.com/absurdly-good-doggo-……

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Lex @notesbylex.com · 03/02/2025

A hilariously simple repro of OpenAI's test-time scaling paradigm called "Budget Scaling": end the thinking when your token budget is met, or append "Wait" to the model's generation to keep thinking, allowing the model to fix incorrect reasoning steps. arxiv.org/abs/2501.19393

Example of injecting Wait token into the model generation.

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Lex @notesbylex.com · 31/01/2025

A method for evaluating data for preference optimisation. Rejecting Instruction Preferences (RIP) can filter prompts from existing training sets or make high-quality synthetic datasets. They see large performance gains across various benchmarks compared to unfiltered data. arxiv.org/abs/2501.18578

Abstract and figures from paper R.I.P.: Better Models by Survival of the Fittest Prompts

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Lex @notesbylex.com · 28/01/2025

Happy dog.

My dog Doggo, a stag hound X bull arab, chilling in the grass

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Lex @notesbylex.com · 23/01/2025

ChatGPT seems to be down.

It's a chart of OpenAI outages reported in last 24 hours by Down Detector (which is just user reports). In the last few minutes, there's a huge spike.

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Lex @notesbylex.com · 18/01/2025

I finally got around to updating my Obsidian plugin: obsidian-title-as-link-text. 1. Now support Wikilinks with a display name: `[[my-page|A Cool Page]]` 2. Also added support for aliases. See the release notes: github.com/lextoumbouro...

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Lex @notesbylex.com · 16/11/2024

Hello world! First post on Bluesky. I'm a senior MLE at Canva, working on LLMs and agents. Sometimes post ML paper summaries and notes about software engineering, although I'm very inconsistent. Here's a photo of me and my dog, Doggo.

My dog, Doggo, and I are sitting in the backseat of our car. Doggo is a Bull Arab cross Staghound.

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