Hallucinations are a key challenge when using large language models in production. Our latest blog post shows how Retrieval-Augmented Generation (RAG) helps, with a practical R example using open-source tools. Read more on the Jumping Rivers blog: www.jumpingrivers.com/blog/retriev...

Announcing two new packages: `yaml12` for R and `py-yaml12` for Python. Fast, correct, and safe YAML 1.2 parsing and emitting, built in Rust. R: posit-dev.github.io/r-yaml12/ Python: posit-dev.github.io/py-yaml12/ #yaml #rstats #python

Turn YAML into R and R into YAML with the new {yaml12} #RStats 📦 posit-dev.github.io/r-yaml12/ind... By @t-kalinowski.bsky.social On the 📦 website: "YAML in 2 Minutes: A Gentle Introduction for R Users" posit-dev.github.io/r-yaml12/art...

Shiny for R v1.12 is here with built-in OpenTelemetry support! 🎉 Trace sessions and reactive calculations in production with zero code changes. Just install {otel}/{otelsdk} and set your env vars. Learn more: shiny.posit.co/blog/posts/s... #RStats #RShiny #OpenTelemetry

We're hiring an open-source #python developer focused on modeling APIs! tidyverse.org/blog/2025/11... #numpy #scipy #scikitlearn

reticulate v1.44 is on CRAN! Positron integration is now enabled by default. Enjoy R and Python REPL consoles powered by concurrent threads in the same process, zero‑copy R↔Python data transfer, and full Variables Pane support. Full changelog: github.com/rstudio/reti... #rstats #python #pydata

Work-in-progress #RStats package {brandthis} that enables you to efficiently create themes and color scales from personal/company branding. Uses {ragnar}, {ellmer}, {ggsci} and other R packages.

For anyone who wants to try Codex Cloud for R package development, here is a setup script you can use: gist.github.com/t-kalinowski...

The {ragnar} #RStats 📦 has a new function to inspect a data store: ragnar_store_atlas() , which visualizes the store, @t-kalinowski.bsky.social tells #Positconf2025

My Workshop for Ukraine is THIS THURSDAY, 11 Sept! Donate to help medics save lives in Ukraine *and* learn how to query text data with R and the {ragnar} #RStats 📦 Can't make it from noon to 2 ET? Register and you'll get access to recording and materials. Thank you! ❤️ www.machlis.com/workshop/

I'd love feedback on this #marginaleffects WIP. In GLMs with many parameters, the marginaleffects 📦 can get a 5–20x speedup (and better SEs) by calling JAX for automatic differentiation. Try the instructions at this link and let me know if you run into trouble. Thanks! github.com/vincentarelb...

❗️Our next workshop will be on September 11th, 6 pm CEST, on RAG in R with ragnar by @smachlis.bsky.social Register or sponsor a student by donating to support Ukraine! Details: bit.ly/3wBeY4S Please share! #AcademicSky #EconSky #RStats

Finally got Glimpse out focused on what the Posit open source team has been up to. Turns out its quite a bit! posit.co/blog/posit-g... I continue to be happy with the approach we (Posit) are taking with LLMs and AI. Too impactful to ignore but focus on useful and safe as much as possible.

New release of quickr v0.2.0 on CRAN #rstats! New: runif(), more control flow, more ops, many many bug fixes. Also, I've been experimenting with chatgpts codex (cloud) in quickr. It's pretty useful! I added some setup scripts to make it easier to get started. changelog: github.com/t-kalinowski...

ragnar v0.2.1 is now on CRAN. It's full of small improvements! The most impactful is that registered retrieval tools now never return previously seen chunks, giving LLMs a robust ability to do deep searches. announcement: www.tidyverse.org/blog/2025/08... changelog: ragnar.tidyverse.org/news/

There's so many parallel sessions at #JSM2025 that it's hard to choose where to go, so I web-scraped the schedule and made a chatbot to help. I've made it public, so hopefully it can help you too - try it out 👉 shiny.mitchelloharawild.com/jsm2025/

The @posit.co new reticulate package with managed/uv python implementation really changed the game (and speed) of using modules without a huge condaenv overhead. In scripts but also big for packages with python deps.

RAG has come to the tidyverse! Check out my step-by-step #InfoWorld tutorial on how to use the {ragnar} and {ellmer) #RStats 📦s to answer natural language questions about a document or Web page. www.infoworld.com/article/4020... #GenAI #LLMs

#ragnar 0.2.0 is on CRAN #rstats! It has a MUCH improved chunker; markdown_chunk() picks better boundaries, builds context, segments by headings, and handles overlapping chunks. Oh, and ragnar_retrieve() can deoverlap retrieved chunks now. Website got a big update too: ragnar.tidyverse.org

Can’t believe I forgot to share this back in February... Check out this intro to RAG by @christophscheuch.bsky.social! blog.tidy-intelligence.com/posts/rapid-... RAG before ragnar! It’s also a good intro to ragnar internals, since ragnar makes similar implementation choices.

New post: https://jcarroll.com.au/2025/06/29/counting-digits-quickly/ What if you could just wave a magic wand over your R #rstast :rstats: code and have it transform into something that ran as fast as or faster than C? @t_kalinowski's {quickr} 'R to Fortran Transpiler' does that for you! […]

I’m very pleased to announce that a preview of the 3rd Edition of Deep Learning with R is now available! mng.bz/X7xa The book is 50% off through July 8!

#RStats WHAT MAGICKS IS THIS?!?!?! github.com/t-kalinowski...

We recently added a new "Getting Started" guide ragnar.tidyverse.org/articles/rag... Blog post coming soon!

Introducing the btw package for teaching LLM chat apps about your #RStats package! Inject "invisible" messages into chats via system prompts and use tool calls to dynamically fetch context when needed. Check out a dplyr example and learn more in @simonpcouch.com's post! posit.co/blog/custom-...

mirai - minimalist async framework for #RStats - released as an 'r-lib' package. Blog post: Advancing Async Computing in R. shikokuchuo.net/posts/26-mir... mirai provides event-driven async for #RShiny and parallel processing for purrr #tidyverse. Really excited to be working on this at Posit!

Just made promptdown public. It's a plain-text interface for working with LLMs using literate programming. See and edit the full prompt each turn. No cramped input boxes, no hidden context, no append-only chat. Still early alpha, feedback welcome! github.com/t-kalinowski...

Thanks to new tools like the {ellmer} #RStats 📦 - and {shinychat} and {ragnar} -- as well as powerful new #LLMs, I built an app to query as well as text search a local group's PDF newsletter archive. It's SO much easier to create #GenAI apps in R than just a year ago. www.district2framing...

I really enjoyed chatting with Karin about bridging R and Python. This post is a deep dive into reticulate, rpy2, and what great interoperability really looks like. #rstats #python

Latest {ragnar] #RStats 📦version now has a very useful viewer to browse and search the duckdb vector store! github.com/tidyverse/ra... I'm having fun with this #R RAG 📦! Thank you @t-kalinowski.bsky.social and @dfalbel.bsky.social (and @posit.co ) #GenAI

For the last couple of months I've been working on something and I'm excited to finally share an early preview: Say hello to plumber2 🎉 plumber2 is a full rewrite of the plumber package for creating powerful webapis in #rstats. It takes everything we have learned from plumber and adds even more

How amazing is {reticulate} #RStats I now don't even blink, just py_require() or use_python("/pathto/env/bin/python3") and (this is how it feels) the entire Python ecosystem is now available as an API in R

The development version of #rstats {keras3} has a new `[` method for tensors! You can now use *both* R-style and Python-style slicing. Two ways to get the first element of tensor `x`: x@r[1] x@py[0] Try it out and share your feedback before it goes to CRAN! keras3.posit.co/dev/referenc... #keras

A new chapter for Python in R.

ellmer (formerly known as elmer) is now on CRAN! ellmer makes it easy to chat with LLM models from a variety of providers and includes support for streaming responses, tool calling and structured data extraction: ellmer.tidyverse.org #rstats

Very proud to announce that @posit.co has joined the opensourcepledge.com. We're committing to spending $2000 / developer / year to support open source software that we use (but don't develop): posit.co/blog/posit-p... #rstats #pydata

Candidate for most impactful use of local LLMs in an R environment. The lang #Rstats package overrides the `?` help function in R, translating help pages into your system's language, ie from Sys.getenv("LANG"). Also translates your roxygen docs. https://github.com/mlverse/lang 🌎🌍🌏

Dev 📦 alert! {lang} translates R help on-the-fly using your local LLM! It also overrides the `?` so you can easily access the translated docs and have them displayed on your IDE's help pane github.com/mlverse/lang #rstats #llm #ollama

We are excited to announce posit::conf(2025)! Join fellow data enthusiasts & developers for an unforgettable three days of learning, connection, and inspiration. Learn more and register at posit.co/blog/positco... #datascience #rstats #pydata #quarto #tidyverse #posit

Introducing the mall package for running multiple LLM predictions against a data frame in #RStats or #Python! mall is inspired by the SQL AI functions offered by vendors such as Databricks and Snowflake. Learn more in this blog post by @theotheredgar.bsky.social: blogs.rstudio.com/ai/posts/202...

I've been working a new #rstats package called pal🤖 Pals bring a library of LLM prompts into your RStudio/Positron sessions, editing code directly at the press of a keyboard shortcut. Read more: simonpcouch.github.io/pal/

S7 0.2.0 is now on CRAN, thanks primarily to the hard work of @t-kalinowski.bsky.social. S7 is a collaborative effort to supersede S3 and S4 and you can read all about it (and what's new in 0.2.0) at www.tidyverse.org/blog/2024/11... #rstats