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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 30

Released a notebook on how to use Google's new Gemini 2.5 Flash Image for SOTA image editing with irouter.

Simply input image(s) + text and get an image back.

Hope you have as much fun working with this as I have!

github.com/CarloLepelaa...

irouter/nbs/applications/img_edit.ipynb at main · CarloLepelaars/irouter

Access 100s of LLMs with minimal lines of code. Contribute to CarloLepelaars/irouter development by creating an account on GitHub.

github.com

Carlo Lepelaars @carlolepelaars.bsky.social · Aug 19

For those curious here is the throughput and costs for each model.

- GPT-4o with web search was the most expensive model.
- LFM 40B MoE was the fastest.
- GPT-5-Chat managed to give a great answer without web search.

pip install irouter
github.com/CarloLepelaa...

(3/3)

GitHub - CarloLepelaars/irouter: Access 100s of LLMs with minimal lines of code

Access 100s of LLMs with minimal lines of code. Contribute to CarloLepelaars/irouter development by creating an account on GitHub.

github.com

Carlo Lepelaars @carlolepelaars.bsky.social · Aug 19

Max Verstappen technically was ahead because of 1 more race win, even though points were tied.

In this example GPT-4o with web search, GPT-5 Chat got the nuance correct. Opus 4.1 realized there was a tie.

Other LLMs were wrong or failed to add the nuance.

(2/3)

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 19

Added parallelization to irouter. This allows you to do rapid evals for many LLMs at the same time. Your only bottleneck is the slowest LLM.

For example, check 21 LLMs tackle this tricky question from
Formula 1 2021 where Max Verstappen and Lewis Hamilton were tied on points. 👇
(1/3)

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 13

Just uploaded an example notebook on getting structured output in irouter.

Passing a schema to `response_format` is sufficient to enable structured output.

OpenAI's GPT-5 Mini seems to work well and supports multiple modalities.

More info:
github.com/CarloLepelaa...

Reposted by Carlo Lepelaars

LightOn @lightonai.bsky.social · Aug 6

After reaching maturity, the PyLate library has its paper accepted at #CIKM2025
🎉Congratulations to the two creators of the library @nohtow.bsky.social @raphaelsty.bsky.social

📄 Read the paper: lnkd.in/eh6NQj4B
Discover PyLate : lightonai.github.io/pylate/
🌐 Learn more about LightOn: lighton.ai

PyLate

PyLate 🐶

lightonai.github.io

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 10

Adding web search to your LLM app is super simple with irouter.

Chat will automatically keep track of web citations.

pip install -U irouter

Example notebook for web search in irouter:
github.com/CarloLepelaa...

Docs page:
carlolepelaars.github.io/irouter/web

Carlo Lepelaars @carlolepelaars.bsky.social · Aug 6

Documentation and example notebooks can be found in the Github repository. Feedback and ideas are always welcome. If you are interested in contributing check out the contribution docs.

pip install irouter
github.com/CarloLepelaa...

(6/6)

GitHub - CarloLepelaars/irouter: Access 100s of LLMs with 2 lines of code

Access 100s of LLMs with 2 lines of code. Contribute to CarloLepelaars/irouter development by creating an account on GitHub.

github.com

Carlo Lepelaars @carlolepelaars.bsky.social · Aug 6

irouter is built on and has the most solid support for
@openrouter.bsky.social, but also offers experimental support for other APIs compatible with the OpenAI spec, like XAI and Moonshot AI.

If you insist on using a different API provider change the base URL.

(5/6)

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 6

Tool usage in irouter is as simple as passing a list of functions to the `tools` parameter.

This example uses a tool to get the time for a specific timezone.

(4/6)

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 6

Multimodality is becoming commonplace in LLMs, so we need a simple interface to work with them.

irouter supports:
- text
- image URL
- local image path
- pdf URL
- local pdf path
- local audio path

Just provide a list of strings with the modalities you need.

(3/6)

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 6

irouter also offers a way to process multiple LLMs at once. Just provide a list of model slugs and irouter will process multiple models. Output is given as a mapping from model to message.

(2/6)

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Carlo Lepelaars @carlolepelaars.bsky.social · Aug 6

Introducing irouter, a super simple interface to access 100s of @openrouter.bsky.social LLMs with 2 lines of code.

It supports multi-modal inputs (text, images, PDF, audio) and tool loops. Mix and match as you see fit.

pip install irouter
github.com/CarloLepelaa...

Examples (1/6) 👇

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Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

Repo: github.com/CarloLepelaa...

Docs: carlolepelaars.github.io/musy (7/7)

GitHub - CarloLepelaars/musy: Toolbox for analyzing, creating and visualizing music

Toolbox for analyzing, creating and visualizing music - CarloLepelaars/musy

github.com

Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

Musy is a work in progress. Short term plans include:
- Tritone sub support
- Scale comparison
- Better chord recognition
- Sheet music generation
- A chord Progression object.

It's my intention to build music web apps with musy.

Feedback and ideas are welcome! (6/7)

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Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

Chord and Scale objects can be exported to a table for further analysis. (5/7)

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Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

Chord objects can be extended and transformed with easy method chaining. This includes adding upper extensions, removing notes, inversion and transposition.

carlolepelaars.github.io/musy/chord.h... (4/7)

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Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

Scale objects allow you to get all modes, chords and secondary dominants from any scale.

carlolepelaars.github.io/musy/scale.h... (3/7)

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Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

The basic building blocks are Note, Chord and Scale. Each object can be listened to and visualized on a piano or fretboard.

carlolepelaars.github.io/musy/viz.html (2/7)

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Carlo Lepelaars @carlolepelaars.bsky.social · Jun 17

In the past few weeks I have been working on a Python library for analyzing, listening to and visualizing music theory. The goal is that you and I can easily build music-related apps from fundamental blocks.

github.com/CarloLepelaa...

Here are some of the highlights! 👇 (1/7)

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Carlo Lepelaars @carlolepelaars.bsky.social · Apr 9

This overview of AI from a business perspective is the best I have seen!

Definitely also worth a read for AI engineers. There are so many pitfalls to avoid in order to effectively ship AI products.

By @hamel.bsky.social and @gregce.bsky.social:
ai-execs.com

AI Essentials For Tech Executives

ai-execs.com

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Carlo Lepelaars @carlolepelaars.bsky.social · Apr 7

Last week I built a little library to simplify working with the API for Flock.io. Very cool to hear that it is already being used in a hackathon by a South Korean University!

Flocky:
github.com/CarloLepelaa...

GitHub - CarloLepelaars/flocky: Simple (Unofficial) SDK for Flock.io

Simple (Unofficial) SDK for Flock.io. Contribute to CarloLepelaars/flocky development by creating an account on GitHub.

github.com

Carlo Lepelaars @carlolepelaars.bsky.social · Apr 4

Reading up on recent papers in language modelling as well as some of the classics.

I think the main conclusion is that Noam Shazeer is a genius! 😁

Check out this phrase from the GeGLU paper. 😎

Link:
arxiv.org/abs/2002.052...

Carlo Lepelaars @carlolepelaars.bsky.social · Mar 29

And this video on the lambda calculus 🤩
youtu.be/RcVA8Nj6HEo

What is PLUS times PLUS?

YouTube video by 2swap

www.youtube.com

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Carlo Lepelaars @carlolepelaars.bsky.social · Mar 29

Wow, this YouTube channel called 2swap has incredible videos which combine mathematical depth, beauty and deep insights!

Check out this video on extending Mandelbrot and Julia sets:
youtu.be/Ed1gsyxxwM0

Mandelbrot's Evil Twin

YouTube video by 2swap

youtu.be

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