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Rails + AI models, which to use?
Claude Opus 4.5 is slightly more accurate and less expensive than Fable, although a tad slower. However, you can get essentially the same results with Kimi K3 for almost half the price.
We know this because we worked with @rails to benchmark the models against 21 atomic tasks and evals.
This project gave us the amazing opportunity to work hand in hand with @AmandaBPerino and the Rails Foundation on the creative task of building Rails-centric LLM benchmarking.
But also, this helps move the ecosystem forward and hopefully allows the community to keep ideating with Rails.
Congrats to @skryukov_dev and Artur Petrov for their work on this!
Claude Opus 4.5 is slightly more accurate and less expensive than Fable, although a tad slower. However, you can get essentially the same results with Kimi K3 for almost half the price.
We know this because we worked with @rails to benchmark the models against 21 atomic tasks and evals.
This project gave us the amazing opportunity to work hand in hand with @AmandaBPerino and the Rails Foundation on the creative task of building Rails-centric LLM benchmarking.
But also, this helps move the ecosystem forward and hopefully allows the community to keep ideating with Rails.
Congrats to @skryukov_dev and Artur Petrov for their work on this!
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Evil Martians retweeted
Recently, I released a new version of typed-channel. For those who haven’t heard of it before, it’s a small library that simplifies communication between different realms (and not only!) in your application.
The new version introduces a Requests API, so now you can wait for responses without writing any extra code.
Read more about it in my new article!
The new version introduces a Requests API, so now you can wait for responses without writing any extra code.
Read more about it in my new article!
typed-channel makes postMessage type-safe in ~350 bytes. Define message names and payload types once, and TypeScript checks them on both sides. The same code works for Web Workers, iframes, tabs, and in-page event buses. v0.11 adds cancelable requests, and canceling stops the worker too: evilmartians.com/chronicles/how…
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typed-channel makes postMessage type-safe in ~350 bytes. Define message names and payload types once, and TypeScript checks them on both sides. The same code works for Web Workers, iframes, tabs, and in-page event buses. v0.11 adds cancelable requests, and canceling stops the worker too: evilmartians.com/chronicles/how…
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The Ruby community describes @sfrubyconf as a “future-oriented” conference. That was the intention all along. 💎
If we get the people building interesting things with Ruby, Rails, and agents in the same room, we can have the important conversations that move the ecosystem forward.
Every speaker was hand-picked with that goal in mind. That's how we found @jasonmarkthomas, who’s behind COSMOS, the Ruby stack used to build, test, and fly satellites.
If you want to hear Ruby and Rails success stories, meet future teammates, and get inspired, come to the conference. There are only a few days left to get tickets, and we’ve hidden a secret discount in this article: evilmartians.com/chronicles/why…
If we get the people building interesting things with Ruby, Rails, and agents in the same room, we can have the important conversations that move the ecosystem forward.
Every speaker was hand-picked with that goal in mind. That's how we found @jasonmarkthomas, who’s behind COSMOS, the Ruby stack used to build, test, and fly satellites.
If you want to hear Ruby and Rails success stories, meet future teammates, and get inspired, come to the conference. There are only a few days left to get tickets, and we’ve hidden a secret discount in this article: evilmartians.com/chronicles/why…
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Evil Martians retweeted
It’s been a while since we last introduced our speakers. 🎤
So here’s who’s taking the stage on day one, with talks on agentic coding with Rails.
Irina Nazarova (@inazarova) and Ryan Sherlock (@ryan_sherlock) are giving the opening and closing keynotes, respectively.
We’ll imir Dementyev (@palkan_tula)
- Madison Sites
- JP Camara (@jpcamara)
- Ben Sheldon (@bensheldon)
- Svyatoslav Kryukov (@skryukov_dev)
- Carmine Paolino (@paolino)
- CJ Avilla (@cjav_dev)
- Sergey Karayev (@sergeykarayev)
Come see them live: luma.com/sfrubyconf2026
So here’s who’s taking the stage on day one, with talks on agentic coding with Rails.
Irina Nazarova (@inazarova) and Ryan Sherlock (@ryan_sherlock) are giving the opening and closing keynotes, respectively.
We’ll imir Dementyev (@palkan_tula)
- Madison Sites
- JP Camara (@jpcamara)
- Ben Sheldon (@bensheldon)
- Svyatoslav Kryukov (@skryukov_dev)
- Carmine Paolino (@paolino)
- CJ Avilla (@cjav_dev)
- Sergey Karayev (@sergeykarayev)
Come see them live: luma.com/sfrubyconf2026
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Talk is cheap and so is code.
@yurimikhin wrote ten checks to pass on AI-generated code. These make it safer to trust, faster to review, and harder to let decay go unnoticed.
Rita Klubochkina turned those checks into an agent skill set and we tested it on our website. The skill ships only the ones your codebase needs one PR at a time. Find it here: evilmartians.com/chronicles/ten…
@yurimikhin wrote ten checks to pass on AI-generated code. These make it safer to trust, faster to review, and harder to let decay go unnoticed.
Rita Klubochkina turned those checks into an agent skill set and we tested it on our website. The skill ships only the ones your codebase needs one PR at a time. Find it here: evilmartians.com/chronicles/ten…
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Evil Martians retweeted
.@browsercompany @joshm is sunsetting Arc and says Dia is the ideal replacement. I disagree. Arc is a labor of love and design craft, and I enjoy using it every day. Dia, on the other hand, lacks that design love, and I’m not sure why.
Here’s 6+ things where Arc is still better than Dia
Here’s 6+ things where Arc is still better than Dia
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Evil Martians retweeted
You can rank #1 on Google and be completely invisible to AI agents. I updated my llms-visibility skill (forked from @evilmartians) to verify your site actually passes – now aligned with @agentreadyorg.
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Evil Martians retweeted
Enrique (@mogox) is light-hearted, funny, smart, and a pillar of the SF Ruby community. We gave him the spotlight this week. 🔦
He was a speaker at last year's conference and will come back this year as an attendee. He thinks SF Ruby is different from other Ruby events because d about what's next.
Watch the full interview to get to know Enrique and learn what he's working on. Come meet him at the conference: luma.com/sfrubyconf2026
He was a speaker at last year's conference and will come back this year as an attendee. He thinks SF Ruby is different from other Ruby events because d about what's next.
Watch the full interview to get to know Enrique and learn what he's working on. Come meet him at the conference: luma.com/sfrubyconf2026
This week's spotlight shines on @mattsolt. 🔦
He's bright, community-driven, and approachable. As an AI enthusiast, Matt writes RubyAI every week and is building Poetry UI.
We're so glad to have him attend the conference for a second time and can't wait for you to meet him.
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Evil Martians retweeted
❗❗❗ Hey fam, if you planned to join the SF Ruby Conference on Nov 10-11, you need to get a ticket before Monday morning to get a cool personalized physical badge.
Join -> create a character in the game -> get a cool personalized badge
luma.com/sfrubyconf2026
Join -> create a character in the game -> get a cool personalized badge
luma.com/sfrubyconf2026
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Evil Martians retweeted
Rumor has it, there's a secret discount code hidden in this article. 👀
If you know us, you know we love Ruby.
@sfrubyconf was born out of our appreciation for the language and its community. It’s a conference for passionate engineers who are moving the ecosystem forward.
We have talks from people at @Shopify, @GustoHQ, @intercom, @withpersona, @AnthropicAI, @typesense, and more, plus the creators of RubyLLM, Herb, and Solid Queue.
If you’re into learning from the brightest minds, having conversations that help build a better future, and making new friends, you won’t want to miss this.
Read more about why this conference is for you: evilmartians.com/chronicles/why…
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Agents on @rails is the Rails Foundation's LLM benchmark. Evil Martians designed its evaluation tasks and the tooling to run trials at scale. Now, we're going behind the scenes. First: how we wrote black-box checks for apps whose code we'd never seen, to keep trials fair and results reliable. Bonus: the same evals run against Rust. evilmartians.com/chronicles/the…
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We're hosting a Ruby conference in SF from Nov 10-12 and we'll have a day dedicated to talks on agentic coding with Rails. Last day to get tickets: luma.com/sfrubyconf2026
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Evil Martians retweeted
Come see the author of this gem we all love at the conference!
Less than 20 days to get tickets: luma.com/sfrubyconf2026
Less than 20 days to get tickets: luma.com/sfrubyconf2026
RubyLLM being the #4 most-loved gem on the Ruby on Rails Community Survey this year leaves an incredible feeling.
Thanks to everyone who wrote it in. I hope RubyLLM gives you some of the same enjoyment that brought me back to Ruby.
railsdeveloper.com/survey/2026#ge…
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If you know us, you know we love Ruby.
@sfrubyconf was born out of our appreciation for the language and its community. It’s a conference for passionate engineers who are moving the ecosystem forward.
We have talks from people at @Shopify, @GustoHQ, @intercom, @withpersona, @AnthropicAI, @typesense, and more, plus the creators of RubyLLM, Herb, and Solid Queue.
If you’re into learning from the brightest minds, having conversations that help build a better future, and making new friends, you won’t want to miss this.
Read more about why this conference is for you: evilmartians.com/chronicles/why…
@sfrubyconf was born out of our appreciation for the language and its community. It’s a conference for passionate engineers who are moving the ecosystem forward.
We have talks from people at @Shopify, @GustoHQ, @intercom, @withpersona, @AnthropicAI, @typesense, and more, plus the creators of RubyLLM, Herb, and Solid Queue.
If you’re into learning from the brightest minds, having conversations that help build a better future, and making new friends, you won’t want to miss this.
Read more about why this conference is for you: evilmartians.com/chronicles/why…
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Evil Martians retweeted
Laravel is an opinionated, batteries-included framework for developers and agents. Rubyists admire it, and so do we. That’s why we’re happy to have @laravel as a sponsor this year.
Like us, the Laravel team is working hard to support the future of ambitious builders. Come say rence!
Like us, the Laravel team is working hard to support the future of ambitious builders. Come say rence!
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All our engineers are encouraged to write technical content for the blog, which then powers most of our marketing strategy.
This makes all the difference for us. Hundreds of thousands of people read our blog every year and trust our team enough to do business with us.
We’re rated the top blog in @planetargon’s 2026 Ruby on Rails Community Survey. Thanks to everyone who reads us, and to @travis____t for leading the blog! ♥️
P.S. @sfrubyconf also made the list of the top ten conferences Rubyists plan to attend this year. How exciting!
This makes all the difference for us. Hundreds of thousands of people read our blog every year and trust our team enough to do business with us.
We’re rated the top blog in @planetargon’s 2026 Ruby on Rails Community Survey. Thanks to everyone who reads us, and to @travis____t for leading the blog! ♥️
P.S. @sfrubyconf also made the list of the top ten conferences Rubyists plan to attend this year. How exciting!
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Evil Martians retweeted
Thank you Planet Argon for the Ruby on Rails Community Survey! I was super excited to see:
- @evilmartians blog on #5 in Blogs and newsletters 🎉
- @palkan_tula ‘s Layered Rails book at #3 in Books 🔥
- and also @sfrubyconf at #10 in Conferences 💃
- @evilmartians blog on #5 in Blogs and newsletters 🎉
- @palkan_tula ‘s Layered Rails book at #3 in Books 🔥
- and also @sfrubyconf at #10 in Conferences 💃
The 2026 Ruby on Rails Community Survey results are live! For nearly two decades, we’ve kept a pulse on how the community has evolved. Thank you to everyone who took the time to share how you work. Here’s what you told us.
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Ha, got you!
@sfrubyconf is in less than a month. Come build the future of Ruby and Rails: sfruby.com
@sfrubyconf is in less than a month. Come build the future of Ruby and Rails: sfruby.com
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