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)

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)

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)

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)

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)

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)

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)

Repo: github.com/CarloLepelaa...

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

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)

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

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)

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

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

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)

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