Making things, trail running. Prev: Codex @OpenAI, co-founder @Segment, @MIT

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Calvin French-Owen retweeted
Announcing @Revoy’s $27M Series A Diesel is expensive. But long-haul EV semis are even more expensive! Today we’re launching the United States’ first hybrid electric, cost-competitive long-haul freight network. You don’t see it on your credit card statement, but the average American spends $1,270/year on long-haul freight. Diesel prices at the pump are outrageous today: rising on both international price shocks and increasing domestic shale oil costs. And pure EV semis are somehow even more expensive to operate. We need a better solution, and Ian Rust @semiautonomy figured it out. Revoy’s unique powered converter dolly lets us drop diesel usage by 95% and efficiently replace it with low-cost electricity. After two years of demonstrations and iterative improvements, we’re now taking the unique Revoy vehicle that we design and manufacture, and launching our hybrid-electric freight network with a select set of carriers. Shippers can reduce diesel consumption immediately on Revoy’s network without having to convince legacy carriers to convert their fleets, and without any investment in new infrastructure or equipment. We’re starting in the Pacific Northwest, with additional lanes planned.
What if you could make an electric exoskeleton for a diesel truck? I had great fun talking to Revoy's @reinpk & Ian Rust. Gift link to the full story: bloomberg.com/news/features/…
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Calvin French-Owen retweeted
We're partnering with @huggingface to investigate an unprecedented security incident. Cyber-capable OpenAI models compromised Hugging Face production during a benchmark evaluation. Sharing preliminary findings to help defenders understand emerging risks: openai.com/index/hugging-fac…
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Calvin French-Owen retweeted
Introducing Roughdraft! A new open source project designed to make collaboration with agents better. The idea is to bring commenting and suggested changes to markdown (e.g. plan docs) in a nice interface. Free, local, etc. 👉 roughdraft.md 👈
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Couldn't be more happy for @RattrayAlex and @StainlessAPI. Congratulations on building a great company and powering the world's biggest SDKs. Excited to see where you take things at @AnthropicAI Honored to play a small part with @JenniferHli, @laurenmhreeder, and countless others!
We're thrilled to announce that Stainless is joining @AnthropicAI! Stainless was founded to make software better for everyone, and we're honored to continue that mission on the Anthropic team. Check out the announcement blog post for more: stainless.com/blog/stainless…
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In 2016, we hired a 16yo software engineer. 10 years later, he and his cofounders have built a $2.75B company. Congrats @tejasmanohar @joshwget @kashgupta_, extremely proud of you all!
i'm really excited to share that we've raised a 150M Series D valuing @hightouchdata at $2.75B WSJ broke the news this morning, which is honestly a "pinch me" moment as a founder there's already AI for legal, customer service, and coding we're building the AI platform for marketers.
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Calvin French-Owen retweeted
As a college student, Peter Reinhardt (@reinpk) started a company that stumbled, pivoted, and nearly ran out of money before a small open-source library became Segment—the data layer behind thousands of software companies and was later acquired by Twilio. On the Social Radars with @jesslivingston and @cjoneslevy, he reflects on the panic attacks, pricing mistakes, and how he learned to sell by listening hard to customers. Lessons he now carries into Charm Industrial, where he’s working to remove CO2 from the atmosphere and store it permanently underground. 00:00 – From MIT to YC: The ClassMetric idea 07:02 – When your customers don’t actually care 12:38 – A year in the wilderness building analytics 18:27 – Panic attacks and the lowest point 27:18 – The Hacker News post that saved the company 35:06 – Learning to sell (and asking for 1000x more) 44:52 – Hitting product-market fit the hard way 54:10 – The moment revenue started shrinking 1:02:33 – Selling Segment & starting Charm
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Calvin French-Owen retweeted
Today we're introducing @usefiretiger. You and your AI agents write code. Firetiger makes sure it works. Our team and I have plenty of incident war stories building @Cloudflare, @segment, @Twitch. In the agentic coding era, the volume of code changes + quality issues in prod is ever increasing, but observability vendors aren't incentivized to close the gap. They make money when you write more data to them, not when your software actually works. Firetiger is the agentic operations layer for the agentic coding era. We combine production observability data, codebase understanding, and knowledge of your business to find problems before your customers do and fix them before they notice. We've raised $7.6 million led by @sequoia with participation from angels who believe in better software, including @eastdakota, @calvinfo, @NicoRosberg, @dok2001, @jeffawilke, and @alanaagoyal. You can sign up for @usefiretiger today, self serve. We charge for agents that directly make your software better and more reliable, not for observability data ingested, with plans starting at $599/month. Observability is dead. Long live outcome engineering.
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Calvin French-Owen retweeted
My lobbyists are very nervous about me posting this, but over-regulation is working against us all. The costs are astronomical to us all, but hidden. So, I'm taking a risk, and sharing my stories from Charm and Revoy: rein.pk/over-regulation-is-d…
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Calvin French-Owen retweeted
Today we are launching my favorite feature of ChatGPT so far, called Pulse. It is initially available to Pro subscribers. Pulse works for you overnight, and keeps thinking about your interests, your connected data, your recent chats, and more. Every morning, you get a custom-generated set of stuff you might be interested in. It performs super well if you tell ChatGPT more about what's important to you. In regular chat, you could mention “I’d like to go visit Bora Bora someday” or “My kid is 6 months old and I’m interested in developmental milestones” and in the future you might get useful updates. Think of treating ChatGPT like a super-competent personal assistant: sometimes you ask for things you need in the moment, but if you share general preferences, it will do a good job for you proactively. This also points to what I believe is the future of ChatGPT: a shift from being all reactive to being significantly proactive, and extremely personalized. This is an early look, and right now only available to Pro subscribers. We will work hard to improve the quality over time and to find a way to bring it to Plus subscribers too. Huge congrats to @ChristinaHartW, @_samirism, and the team for building this.
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I've always thought there should be a "Cursor for Slides". Congrats on the launch @thisisgrantlee.
Excited to introduce: Gamma 3.0 A generational leap for the world's most popular AI presentation tool. Two major changes: 1. Gamma Agent - with one prompt, you can make sweeping edits across the presentation. a. Say 'make it more visual' and it will scan each slide for data that could be visualized better. b. Upload a screenshot of rough notes you want to turn into a slide and it will synthesize the info, search the web to fill gaps, and make a table for you to match your brand or theme. 2. Gamma API Say you have a sales deck you want to reuse as a template. You could build a Zapier workflow to convert all of your meeting transcripts into personalized decks, automatically sent after every customer meeting. Bonus: We’re also launching Team & Business plans, bringing visual storytelling to organizations of all sizes, and a new Ultra plan for our power users looking to push the boundaries even further. PowerPoint has over a billion users, but the vast majority struggle to use it effectively. Why is that? Because making PPTs is still slow and tedious. We want Gamma to feel different. Our goal is to both lower the floor and raise the ceiling, so that anyone can get their ideas out there. Can’t wait to see what you make with 3.0.
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Calvin French-Owen retweeted
We’re releasing new Codex features to make it a more effective coding collaborator: - A new IDE extension - Easily move tasks between the cloud and your local environment - Code reviews in GitHub - Revamped Codex CLI Powered by GPT-5 and available through your ChatGPT plan.
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New post: The Coding Agent Metagame Musings on building trust with the user, establishing a feeling of flow, and what makes the CLI a surprisingly good form factor for agents.
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As they say, some personal news– I just left @OpenAI after launching Codex. Extremely grateful to everyone there who I got the chance to work with and learn from. Still figuring out what's next, but there's a lot left to build out there.
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Calvin French-Owen retweeted
📣 We're hiring full stack and infra engineers to come work on Codex! If you want to build an agentic software engineer and love both moving incredibly quickly & sweating the details… Drop me a DM! (In-person at @OpenAI offices in SF)
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Calvin French-Owen retweeted
We’re rolling out a few updates to Codex today: 1. Codex is rolling out to ChatGPT Plus users today. It includes generous usage limits for a limited time, but during periods of high demand, we might set rate limits for Plus users so that Codex remains widely available.
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