Posit

Graphic with Posit AI branding over a background of R code layered on an aerial forest landscape. Large headline text reads: “AI, embedded in RStudio. No more context switching.”

Meet Posit AI.

Built for data scientists who want AI inside their RStudio workflow.

Instead of black-box suggestions, Posit AI helps generate code you can inspect, understand, and rerun.

Learn more:
posit.co/products/ai?...

I presented at Shiny in Production 2025, an incredible conference hosted by @jumpingrivers.com up in Newcastle! I was glad to share the very latest from the Shiny team directly. The topics were bleeding edge at the time, so still new and relevant now. My video: www.youtube.com/watch?v=vxai...

Minimalist Async Evaluation Framework for R Evaluates R expressions asynchronously and in parallel, locally or distributed across networks. An official parallel cluster type for R. Built on nanonext and NNG, its non-polling, event-driven archit...

mirai 2.6.1 is now on CRAN

Launching daemons on Posit Workbench wasn't working for you with mirai 2.6.0? We've fixed it! `http_config()` now authenticates correctly for all Workbench installation types.

Scale seamlessly from laptop to enterprise with mirai.

mirai.r-lib.org
#Rstats #Tidyverse

What happens after you outgrow your memory limits?
Creator of pandas and Apache Arrow, Wes McKinney, takes the stage at #positconf2026 to discuss the next frontier of analytical computing and agentic software engineering.
👉 Grab your spot: pos.it/conf

Screenshot of both sides of the printable version of the cheatsheet

Screenshot of the web version of the recipes cheatsheet

#tidymodels now has its very first cheatsheet! "Preprocessing data with {recipes}" is now available in Web and PDF versions here: rstudio.github.io/cheatsheets/... #rstats #posit #rstudio

The Prolific Output of Wes McKinney in the Age of Agentic Engineering - Posit Wes McKinney is shipping open source projects faster than ever, using AI coding agents to build across Python, Go, Swift, and Rust... and he's having more fun than he's had in years.

@wesmckinney.com is on an absolute tear. 🔥

The pandas creator is leveraging AI to rapidly ship tools, crossing Swift, Go, and Python to build Agents View, VibePulse, roborev, moneyflow, msgvault, Spicy Takes...

@richmeister.bsky.social breaks it down on the Posit blog: posit.co/blog/the-pro...

Upcoming Call for Proposal Deadlines

So many exciting events... with upcoming CFP deadlines! Which ones will you submit to?

🐍 SciPy (Jul 13-19, Minneapolis, MN): Mar 4 pretalx.com/scipy-2026/cfp
💊 R/Medicine (May 4-8, Virtual): Mar 6 rconsortium.github.io/RMedicine_we...
🔵 UseR! (July 6-9, Warsaw, Poland): Mar 8 user2026.r-project.org

2026-02-27 AI Newsletter llama.cpp joins Hugging Face, a new package for code review, and cloud-hosted vs. local models

🗞️ Here's the latest edition of the Posit AI newsletter. This week's edition includes:

The llama.cpp team joining Hugging Face
A commenting interface for code reviews
Cloud-hosted vs. local vs. open weights models

And more!

📬 Read the newsletter: posit.co/blog/2026-02...

The future of #DataScience is at #positconf 2026. Check out our keynote lineup:
Wes McKinney: Future of high-performance computing
Christine Zhang: Data storytelling at NY Times
Emily Riederer: Scaling open-source at Capital One
Sara Altman & Simon Couch: AI-driven workflows
Register: pos.it/conf

The mirai hex sticker on a dotted background, with the Posit logo in the corner.

Announcing mirai 2.6.0!

This framework for parallel & async computing in #RStats just got a major upgrade: HTTP Launcher (incl to Posit Workbench!), C-Level Dispatcher, process results as they finish, and synchronous mode .

Learn more: tidyverse.org/blog/2026/02...

"Working with agents is a lot more productive, but a lot less fun." Charlie Marsh on the weird world of building software right now. Full conversation on The Test Set.

From Fragmented IDEs to One Multilingual Platform: Johnson & Johnson’s Positron Story - Posit Discover how Johnson & Johnson unified its data science workflow. Learn why they transitioned from fragmented IDEs to Positron, a multilingual platform for R and Python development.

Still running R and Python in separate IDEs?

Join our live webinar on March 3 to hear how Johnson & Johnson standardized on one multilingual platform with Positron.

Real enterprise story. Regulated environment.

Secure your spot →
posit.co/webinar/from...

**Next week**

🏔️ Cascadia R Conf (Jun 27, Portland, OR): Mar 1 cascadiarconf.com/cfp/
💊 R/Medicine (May 4-8, Virtual): Mar 6 rconsortium.github.io/RMedicine_we...
🔵 UseR (Jul 6-9,Warsaw, Poland): Mar 8 user2026.r-project.org

Thanks to @emilyriederer.bsky.social for the inspiration: bsky.app/profile/emil...

Upcoming CFP Deadlines

posit::conf(2026) call for talks may be over, but there are still many #RStats & #Python events where you can submit! Maybe we'll see you there:

🇬🇭 Ghana R Conference (Jul 9-10, Virtual): Feb 25 ghana-rusers.org
🐍 SciPy (Jul 13-19, Minneapolis, MN): Feb 25 pretalx.com/scipy-2026/cfp

Apply to be an Opportunity Scholar at posit::conf(2026) in Houston!
We’re offering 40 full-support scholarships for underrepresented groups in data science. Includes: 🎟️ Conference+Workshop pass 🏨 Hotel stay ✈️ Travel reimbursement
Apply by March 13: posit.co/blog/apply-t...
#positconf2026 #rstats

Rapp 0.3.0 Rapp is an R front-end (like Rscript) that turns simple scripts into polished CLIs, with automatic argument parsing, generated help, and support for commands and installable launchers.

I’m happy to announce Rapp v0.3.0 — a package that makes it easy to build and share polished CLI applications written in R.

Read more: www.tidyverse.org/blog/2026/02...

posit::glimpse() Newsletter – February 2026 - Posit This edition covers major updates from Posit, including new versions of ggplot2, ellmer, and dplyr.

The newest edition of posit::glimpse() is here! 🚀

Read a roundup of major #RStats & #Python updates: ggplot2 4.0.0, dplyr 1.2.0, ellmer 0.4.0, Positron native Jupyter Notebook support , and more.

🎟️ Plus, registration for posit::conf(2026) is officially OPEN!

Find it here: posit.co/blog/posit-g...

plumber2 hex

Announcing plumber2 0.2.0 for APIs in #RStats 🔧

plumber2 0.2.0 brings essential observability and authentication features to your R workflows:

Native support for traces and metrics, streamlined request handling for higher throughput, and more!

Read more: tidyverse.org/blog/2026/01...

Is your love for data statistically significant? ❤️ 📊 Treat your "significant other" (or yourself!) to posit::conf(2026) in Houston. Super Early Bird pricing is live right now—lock in the lowest rate for the year's premier data science event. Commit to your craft: pos.it/conf
#positconf #rstats

Benchmarking AI IQ & Data Science Agents (Feb 2026) Discover the latest in AI for data science. This edition explores the BASIS benchmark for AI IQ, the rise of coding agents like Databot for R and Python, and organizational values in the age of LLMs. ...

🗞️ Here's the latest edition of the Posit AI newsletter, your biweekly roundup of AI news from Posit & beyond.

This week's edition includes:

posit::conf(2026) call for talks
A step change in coding agents’ abilities
METR’s time horizon eval

& more!

📬 Read the newsletter: posit.co/blog/2026-02...

Registration is LIVE for posit::conf(2026)!
Join us in Houston or virtually from Sept 14–16 for workshops, 100+ talks, & a whole lot of data science.
✨ Super Early Bird: Save on in-person tickets until April 10
✨ Virtual Pass: $99 for a virtual day+livestreams
Secure your spot: pos.it/conf

Square social graphic featuring a laptop with code displayed on screen under a dark blue overlay. Large white headline text reads: “Publish R & Python work from script to stakeholder with ease.” The R and Python logos appear in the bottom right corner.

Connect or Connect Cloud?
Learn the difference ☁️

Not sure which fits your R or Python publishing needs?

Join us for a practical walkthrough of real workflows, internal vs external sharing, and when each product makes sense.

📅 Feb 19, 2026
🕛 12 PM EST
Register: posit.co/webinar/publ...

Promotional graphic for a Positron webinar titled “From fragmented IDEs to one multilingual platform: Johnson & Johnson’s Positron Story.” The image features the Positron logo, a headshot of the customer speaker, and text highlighting a live demo on Tuesday, March 3rd. Posit branding appears at the bottom.

From fragmented IDEs to one multilingual platform.

Hear how Johnson & Johnson unified R and Python development with Positron to support reproducible, validated workflows in a complex enterprise environment.

March 3, 2026 · 12:00 PM ET

Register here:
events.zoom.us/ev/AuMB5q-g3...
#Data #Positron

`dplyr::if_else()` and `dplyr::case_when()` are up to 30x faster dplyr 1.2.0 comes with much faster and more memory efficient `if_else()` and `case_when()` functions!

Last week we released dplyr 1.2.0, but we left off something VERY important 🙂

`dplyr::if_else()` and `dplyr::case_when()` are now up to 30x faster and use 10x less memory!

We dive into how we achieved these numbers in this new #rstats post!

tidyverse.org/blog/2026/02...

nanonext 1.8.0 nanonext 1.8.0 adds a low-level streaming HTTP/WebSocket server to R's web infrastructure, with TLS support, new async primitives, and redesigned documentation.

nanonext 1.8.0 is out - R now has a streaming HTTP/WebSocket server with bundled TLS.

Runs alongside Shiny in the same process. We're already using it at Posit to explore new real-time capabilities.

#Rstats #tidyverse

tidyverse.org/blog/2026/02/nanonext-1-8-0/

Did you hear? 📣 BARC CEO Shawn Rogers is joining Posit CMO Bruno Trimouille for an exciting discussion on eliminating the structural gap between development and deployment.

Register: posit.co/webinar/brid...

A graphic for Posit featuring a hexagonal sticker with a camel carrying boxes and "yaml12" text, over a blue wave background.

Announcing yaml12: High-speed YAML 1.2 for #RStats & #Python 🐫

Built entirely in Rust, get up to 2x faster in R and 50x faster in Python vs. defaults, tag evaluation (like code execution) is opt-in, and strict YAML 1.2 compliance for consistent data.

Learn more: tidyverse.org/blog/2026/01...

Thank you for the shout out, R Weekly & @rpodcast.bsky.social!

We love @emilyriederer.bsky.social's episode on The Test Set, and we think you will too!

Check it and all our past episodes on our YouTube playlist: www.youtube.com/playlist?lis...

dplyr 1.2.0 dplyr 1.2.0 fills in some important gaps in dplyr's API: we've added a new complement to `filter()` focused on dropping rows, and we've expanded the `case_when()` family with three new recoding and re...

dplyr 1.2.0 is out now and we are SO excited!

- `filter_out()` for dropping rows

- `recode_values()`, `replace_values()`, and `replace_when()` that join `case_when()` as a complete family of recoding/replacing tools

These are huge quality of life wins for #rstats!

tidyverse.org/blog/2026/02...