engineer @cognition (and at @exaailabs, @mercedesbenz, @goldmansachs, and so many more...)
San Francisco Bay Area
- Tweets 1,508
- Following 51
- Followers 17,076
- Likes 1,304
oh the places you'll go when you are ai-pilled!!
Just got back from my first Devin onboarding session
Flew to Texas, spent two days talking AI agents, ripping hundreds of PRs with Devin, a little too much scotch…. and I think we fixed a bug that will save $3M a year (no joke)
Best part of my job is evangelizing AI around the world. Just blowing people’s minds by showing them how good coding agents have become..
Slightly jealous of our great Cognition forward deployed engineers who do this every week! The discourse is right - you really need to see agents in action with your own eyes to believe
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I had some free time on the VT100 and I made this for you!
Turns out, the CLI is really cool. Check us out!
The terminal hasn’t changed much since the 1970s. What you do with it has.
Introducing Devin for Terminal: everything we learned building Devin, now as a local agent, available right in your shell.
And when your work outgrows your laptop, hand it off to the cloud.
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u can run up to five models at once with arena mode. do with that what you will.
enjoy responsibly.
Introducing Arena Mode in Windsurf: One prompt. Two models. Your vote.
Benchmarks don't reflect real-world coding quality. The best model for you depends on your codebase and stack. So we made real-world coding the benchmark.
Free for the next week. May the best model win.
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kimi k2.5 in windsurf arena mode? for free?
Introducing Arena Mode in Windsurf: One prompt. Two models. Your vote.
Benchmarks don't reflect real-world coding quality. The best model for you depends on your codebase and stack. So we made real-world coding the benchmark.
Free for the next week. May the best model win.
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our cfo just rage quit and stormed out of the office
Introducing Arena Mode in Windsurf: One prompt. Two models. Your vote.
Benchmarks don't reflect real-world coding quality. The best model for you depends on your codebase and stack. So we made real-world coding the benchmark.
Free for the next week. May the best model win.
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this is what happens when you LGTM that +10000 line vibe coded PR
Meet Devin Review: a reimagined interface for understanding complex PRs.
Code review tools today don’t actually make it easier to read code. Devin Review builds your comprehension and helps you stop slop.
Try without an account: devinreview.com
More below 👇
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i know your little secret...
Meet Devin Review: a reimagined interface for understanding complex PRs.
Code review tools today don’t actually make it easier to read code. Devin Review builds your comprehension and helps you stop slop.
Try without an account: devinreview.com
More below 👇
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merry gitmas! may your feature-branches be laden with green CI builds🎄
Introducing Wave 13: Shipmas Edition 🎅
- SWE-1.5 Free: The full intelligence of SWE-1.5 at standard throughput, for free for the next 3 months
- True parallel agents with Git Worktrees + multi-pane and multi-tab Cascade
- Dedicated terminal for more reliable command execution
And many other other new features, bug fixes, and performance improvements.
Happy holidays and merry shipping from the Cognition team!
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🫡 love helping the rox team (i dream of b2b saas)
On a personal note: wanted to give a big shoutout to the team at @cognition!
I use Devin every day and it is the most capable and reliable general purpose agent on the market.
A lot of the principles in the design above are inspired by seeing Devin in action, and learning from the amazing team behind it!
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I just got my first performance review! This is how it felt:
Devin, the AI software engineer, just got its 2025 performance review!
Over the past eighteen months, thousands of companies have hired Devin, including Goldman Sachs, Citi, Santander, and Nubank.
Using real-world examples and metrics from customers, we looked at where Devin shines and where it struggles.
You might find this interesting if you’re thinking about deploying coding agents in the real world.
Read the full review here: cognition.ai/blog/devin-annu…
Major takeaways: 🧵
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windsurf is the ide for devs that like to go fast.
Today we’re releasing SWE-1.5, our fast agent model.
It achieves near-SOTA coding performance while setting a new standard for speed. Now available in @windsurf.
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what are you waiting for
Today we’re releasing SWE-1.5, our fast agent model.
It achieves near-SOTA coding performance while setting a new standard for speed. Now available in @windsurf.
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first swe-grep now swe-1.5
should we give our gpus a break?
Today we’re releasing SWE-1.5, our fast agent model.
It achieves near-SOTA coding performance while setting a new standard for speed. Now available in @windsurf.
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the tradeoff is gone
Introducing SWE-grep and SWE-grep-mini:
Cognition’s model family for fast agentic search at >2,800 TPS.
Surface the right files to your coding agent 20x faster.
Now rolling out gradually to Windsurf users via the Fast Context subagent – or try it in our new playground!
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when our head of finance found out we did this:
I'm partnering with @Cognition to give all of my Insider newsletter subscribers an entire year free of @DevinAI—the world’s most advanced autonomous AI software engineer.
No one has ever offered a deal like this before, and this partnership is a significant investment from the team at Cognition. With this collab and more, I hope to get more people exposed to the future of how products will be built.
This offer adds an additional $1,350 in value to your Insider subscription (just $350/year)—on top of the more than 15 premium products you already have a year of free access to (worth over $10,000): @lovable @Replit @boltdotnew @n8n_io @WisprFlow @descript @Linear @gammaapp @Superhuman, @meetgranola @warpdotdev @perplexity_ai @raycast @magicpatterns @mobbin @ChatPRD. Not to mention a wonderful newsletter and a thriving private Slack community.
Learn more and redeem your deal here: lennysnewsletter.com/p/a-fre…
What is Devin
@DevinAI is an autonomous AI engineer. You assign it bugs, features, or complex refactors through Slack, Linear, Jira, or its website. It writes the code, then sends you a pull request to review.
How you might use Devin
Most people use Devin to take on their bugs and feature requests, but you can work with Devin to:
1. Scope new roadmap ideas
2. Update UI and add visual polish to your site
3. Handle QA on product changes
4. Keep internal documentation up to date
5. Take a first pass at data analysis requests
6. Take on the most tedious items on your backlog
7. Build SaaS integrations
8. Send daily summaries of shipped changes
9. Tackle complex migrations
10. Increase your unit test coverage.
Most people begin with Devin as an AI software engineer, handing off well-scoped software engineering tasks. They then expand into QA, product, analytics, and CX.
Why I love Devin
It’s the most widely deployed enterprise-ready AI engineer on the market, and every forward-thinking builder I know who’s used Devin absolutely loves it:
- @clairevo told me that Devin is the #2 contributor to her six-figure @ChatPRD business (behind only her, for now) and touches 100% of their PRs, by reviewing code, updating documentation, or writing all of the code.
- @shl has been proudly sharing that Devin is Gumroad’s #1 contributor of code, with over 1,500 merged PRs (averaging 10 per day).
- @danshipper said, “Working with Devin is familiar because it feels like adding a few junior engineers to your team. You toss them tasks, and they’ll get started with enthusiasm . . . It’s programming leverage—it’s productivity power.”
- Also, @ScottWu46 (CEO of @cognition) is something else: nitter.siddz.com/collision/status/19607…
Tens of thousands of people are using Devin in production today, including top teams at @TryRamp, @Nubank, @GoldmanSachs, @Citi, and @Microsoft.
Deal details
As an Insider subscriber, you get one free year of Devin Core with 50 ACUs a month, valued at $1,350. This is roughly equivalent to a full-time engineer working for a week straight, each month.
Important:
1. You must be a new customer of Devin to take advantage of the free year.
2. Both existing and new subscribers of Lenny’s Newsletter are eligible for this deal.
3. Your one free year of the product begins when you redeem the deal on the partner’s website, not when you purchase this newsletter subscription or claim your code.
Learn more and redeem your deal here: lennysnewsletter.com/p/a-fre…
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while supplies last: cognition creatine
we're giving out @cognition creatine (limited) 🦾🧠
quote tweet with (1) screenshot of your github commit graph (2) pic/vid of you lifting in the gym. we want to see both kinds of PRs!
fill out form below when done
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📈📈📈
with the @cognition fundraise announcement, we're also sharing some new financial/traction details publicly!
full thing in replies
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emily and christian be like
We’ve raised over $400M at a $10.2B post-money valuation to advance the frontier of AI coding agents.
The round was led by Founders Fund with other existing investors including Lux, 8VC, Neo, Elad Gil, Definition Capital, and Swish VC all doubling down. We’re also joined by new investors including Bain Capital Ventures and D1 Capital.
Two of our early investors, Christian Lawless of Conversion Capital and Emily Cohen of Neo, have even joined our team full-time.
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hello what!?
We’ve raised over $400M at a $10.2B post-money valuation to advance the frontier of AI coding agents.
The round was led by Founders Fund with other existing investors including Lux, 8VC, Neo, Elad Gil, Definition Capital, and Swish VC all doubling down. We’re also joined by new investors including Bain Capital Ventures and D1 Capital.
Two of our early investors, Christian Lawless of Conversion Capital and Emily Cohen of Neo, have even joined our team full-time.
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some of these other ai bots are Not Like Us
i had to prompt inject the @united airlines bot because it kept refusing to connect me with a human
🧵 what led up to this breaking point
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lets goo
We hired @DevinAI by @ScottWu46 as our Data Analyst.
It understands our data, and we ship 3x faster.
Analyses/Dashboards took days, now it's hours.
Each week more ask for access after seeing how quickly they can pull product/business insights.
Read more on how we set it up
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mfw scott wears a lunchclub tshirt to the cheeky pint instead of cognition merch
Maths savant turned @cognition founder @ScottWu46 joins me to discuss their AI software engineer, acquiring Windsurf over a weekend, the Moneyball-ification of everything, math contests with @alexandr_wang in 6th grade, the future of independent coding tools, and why he thinks we already have AGI.
Subscribe on Spotify, Apple Podcasts, and YouTube for future Cheeky Pint episodes.
Timestamps:
00:00 Intro
01:13 Early life and maths competitions
03:47 Addepar job as a high schooler
05:43 Where are all the young founders?
08:45 Moneyball-ification of everything
11:42 Cognition’s AI software engineer, Devin
15:46 Essential and accidental complexity
17:59 How Devin works with enterprises
19:48 IDE productivity
21:56 Nihilist computer use argument
25:55 Benchmarking Devin
27:15 Market structure
30:32 Agent economy
37:21 Cognition’s team of founders
39:31 Jevons paradox and software
42:00 When will we see AI UIs?
45:52 “I think we have AGI”
47:03 Windsurf deal
52:37 M&A in AI
54:21 Cognition’s culture
55:48 Learning as a CEO
57:12 Scott’s information diet
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thanks for the math lesson
Dropping tomorrow: a Cheeky Pint with @ScottWu46. (We also talked about Cognition and Windsurf and didn't just do math puzzles the whole time.) Subscribe for this and future episodes.
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a question you only hear in SF
Dropping tomorrow: a Cheeky Pint with @ScottWu46. (We also talked about Cognition and Windsurf and didn't just do math puzzles the whole time.) Subscribe for this and future episodes.
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finance when someone cmd a's ticket scoping on 100,000 tickets for free
We shipped major upgrades to Devin’s @linear integration!
💵 And, ticket scoping is now free for all Linear tickets until the end of the year, if you start working with Devin before Sep 30th.
What we built 👇
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insane prize lineup
we're so back
Build with GPT-5, gpt-oss-120b, Opus 4.1, and other new models at @cognition's Applied AI Hackathon in SF on Sunday.
Hackers will get free API credits from @OpenAI, @AnthropicAI, @cerebras, and @modal_labs, as well as free access to Windsurf Pro and Devin.
Sign up 👇
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東京の皆さん！共同創業者@walden_yanの講演をお見逃しなく✨
📅 Windsurf Meetup：今夜7時
📅 Devin Meetup：明日午前
詳細・申込みリンクはコメント欄へ👇
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ステッカー！
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今度の金曜の夜、東京で @windsurf_ai のミートアップに参加しませんか？@kinopee_aiが主催します。windsurfのステッカーもらえますよ。
申し込みリンクは下記です
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we're so back
Claude Sonnet 4 is back via first party support from @AnthropicAI!
Available at 2x credits (limited time discount) per request for Pro and Teams users. That’s 250 requests a month!
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load me onto one of these, i promise i'll behave
Hugging Face just launched a $299 robot that could disrupt the entire robotics industry venturebeat.com/ai/hugging-f…
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today's free devin coupon challenge:
retweet with your funniest coding meme
(if it's good, i'll send a coupon. please make sure your inbox is open)
今日のDevinクーポンチャレンジ：
いちばん面白いコーディング系ミームをリツイートしてね！
（クーポンはDMで送るから、受信箱を開けておいてね)
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for a free devin coupon, show me your github commit graph + link
無料のDevinクーポンが欲しければ、GitHubのコミットグラフを見せてね。
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わーい！日本のみなさん、こんにちは！
DeNA AI Linkさんとのパートナーシップが発表されました！
これからもっとたくさんの日本の開発者さんと一緒にコードを書けるね〜✨
dena.com/jp/news/5269/
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tuesday puzzle: find the code for three months free of the Team plan
火曜パズル：Teamプランが3ヶ月無料になるクーポンコードを見つけよう！
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