# YC Published articles for YC. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## A YC startup is putting $1M behind five unsolved materials science problems for AI DevFeed: [A YC startup is putting $1M behind five unsolved materials science problems for AI]() Original publisher: [Read original article]() Author: Tim Fernholz Published: 2026-11-05T13:00:00Z Content type: news Language: en Sources: [TechCrunch | AI News & Artificial Intelligence]() Topics: [Materials science and engineering](), [AI for science](), [Computational Chemistry / Materials Science]() Tags: [agents](), [ai](), [ai-models](), [challenge](), [challenges](), [chips](), [exclusive](), [frontier-ai](), [frontier-ai-models](), [materials](), [materials-science](), [open](), [problems](), [science](), [solution](), [startup](), [startups](), [yc]() ### AI overview Discovered Materials is offering $1 million in total prizes, or $200,000 per problem, to establish measurable goalposts for AI progress in materials science. The five challenges concern explaining cuprate superconductivity; predicting silicon-silicon dioxide interface structures; mapping grain structure to thermal properties; explaining light-induced changes in materials; and improving Density Functional Theory. The company says frontier AI models were given internet access and other resources to work on each problem for days but made little headway. The challenges were defined with academic advisers because, unlike many math problems, materials questions can be difficult to specify and verify. The startup says solutions could deepen physical understanding and inform electronics, energy storage, and materials manufacturing. Its main business remains developing semiconductor materials with chip-company research partners and its own research. ### Source excerpt Discovered Materials, a months-old YC startup that uses AI to find chip materials, is offering $200,000 for each solution to five open materials science problems. ## Together AI and Y Combinator partner to launch the first dedicated GPU cluster for the YC community DevFeed: [Together AI and Y Combinator partner to launch the first dedicated GPU cluster for the YC community]() Original publisher: [Read original article]() Author: Deveaux Barron, Ankit Gupta, Ellie O'Neil Published: 2026-07-20T00:00:00Z Content type: news Language: en Sources: [Together.ai]() Topics: [AI Infrastructure](), [hugging face]() Tags: [2026](), [ai](), [cluster](), [generative-ai](), [gpu](), [inference](), [infrastructure](), [launch](), [startups](), [y-combinator](), [yc]() ### AI overview Together AI and Y Combinator have launched a dedicated GPU cluster for YC portfolio startups. Companies can access GPUs for short-term inference and training needs at longer-term rates, manage reservations through a self-service portal, and plan capacity without routing usage through YC. The partnership plans to expand the cluster. ### Source excerpt No more two-year compute contracts. Together AI and YC just gave YC startups a faster way to get GPUs. ## PostHog's next chapter DevFeed: [PostHog's next chapter]() Original publisher: [Read original article]() Author: James Hawkins Published: 2026-05-01T00:00:00Z Content type: opinion Language: en Sources: [PostHog]() Topics: [AI Chat](), [product analytics](), [future of software](), [AI-enhanced product development](), [Business, Industry, Usability, User Experience, User Research, Web Strategy](), [Product Management]() Tags: [2](), [2020](), [about](), [agent](), [agentic](), [agents](), [ai](), [ai-observability](), [ai-powered](), [all](), [also](), [ambition](), [analytics](), [announcement](), [building](), [found](), [next](), [product](), [product-market-fit](), [yc]() ### AI overview PostHog says its AI assistant became more reliable after it shifted from one-shot answers to a query loop that lets the agent test and refine results across product endpoints. The company reports that agents now create most dashboards through PostHog AI, MCP, its API, or onboarding wizard, and that MCP usage is roughly doubling monthly. It has made AI the default experience for new users and describes MCP as a gateway to using PostHog through external agents and channels. Its stated direction is toward proactive, long-running agents that use product context to identify problems and help implement fixes. PostHog expects its UX to remain in flux while it develops these capabilities. ### Source excerpt Building PostHog has been living the dream. We got into YC. We pivoted a bunch. We found product-market fit, onboarded hundreds of thousands of... ## Reflecting on YC, 2 years on DevFeed: [Reflecting on YC, 2 years on]() Original publisher: [Read original article]() Author: James Hawkins Published: 2022-05-18T00:00:00Z Content type: opinion Language: en Sources: [PostHog]() Topics: [Open Source]() Tags: [batch](), [founders](), [program](), [y-combinator](), [yc]() ### AI overview PostHog's co-founder says YC's value continued after the batch through founder and investor connections, customer referrals, direct product feedback, partner office hours, hiring leads, and ongoing peer support. The network helped the team, which began as outsiders to Silicon Valley, find advice and investors and reach product-market fit sooner. Some benefits changed as the company grew: YC's investor-review database became less useful after its Series B because it contained fewer relevant later-stage reviews, and the founders sought office hours less often once they had users and a clearer customer profile. YC's Continuity Fund invested about $20 million and supported focus, introductions, and hiring, though the article says such investment is not guaranteed. The founder also cautions that peer comparisons and abundant advice can distract from independent judgment. ### Source excerpt Y Combinator (YC) is seen as the world's best, and most prolific, three-month accelerator program. Upwards of 7,000 founders have taken part. Yet, no... ## YC adds PostHog to top valued companies for July 2021 DevFeed: [YC adds PostHog to top valued companies for July 2021]() Original publisher: [Read original article]() Author: Mo Shehu Published: 2021-07-02T00:00:00Z Content type: article Language: en Sources: [PostHog]() Topics: [GitHub](), [Google Analytics](), [Documentation]() Tags: [2021](), [ai-observability](), [analytics](), [cdp](), [context-layer](), [data-warehouse](), [desktop](), [developer-platform](), [developer-tools](), [diagnose](), [error-tracking](), [experiments](), [feature-flags](), [logs](), [mcp](), [open-source](), [open-source-company](), [product-analytics](), [y-combinator](), [yc]() ### AI overview Y Combinator ranked PostHog 157th among its top 159 companies by valuations and exits in July 2021. The company frames the placement as notable in a portfolio of more than 3,000 startups, and recounts pivoting in its early months, raising a $15 million Series B after about 1.5 years, and planning to grow its team to 47 by the end of 2021. The supplied text also describes PostHog as an open-source developer platform and lists its product tools. ### Source excerpt Y Combinator has listed PostHog as number 157 out of its top 159 companies by valuations and exits as of July 2021. "Um... what?" I know, I know. You... ## Moving to San Francisco DevFeed: [Moving to San Francisco]() Original publisher: [Read original article]() Author: James Hawkins Published: 2020-02-24T00:00:00Z Content type: article Language: en Sources: [PostHog]() Topics: [QCon San Francisco 2025](), [app startup]() Tags: [culture](), [demo-day](), [founders](), [goals](), [startup](), [yc]() ### AI overview The authors describe moving to San Francisco during a Y Combinator program, their shared workspace and community, and how founder discussions, office hours, and ambitious goals shaped their startup experience. ### Source excerpt YC (a startup accelerator we are taking part in) ask you to move to the Bay Area for the whole program. This gives you "a socially acceptable excuse... ## The YC Interview DevFeed: [The YC Interview]() Original publisher: [Read original article]() Author: James Hawkins Published: 2020-01-01T00:00:00Z Content type: article Language: en Sources: [PostHog]() Topics: [lead time](), [Finance]() Tags: [analytics](), [build](), [cost](), [founders](), [funnel](), [hacker-news](), [interview](), [yc]() ### AI overview PostHog's founders recount preparing for their YC interview while trying to grow their software product. They describe testing paid acquisition, tracking users by channel, improving the signup funnel, speaking with users, rehearsing interview answers, and learning from a missed product demonstration. After acceptance, they continued growing the company and sent weekly progress updates to YC partners. ### Source excerpt We submitted the application, then got back to work. We couldn't work out how long it'd take to hear back, but then we did. It was now October 16th... ## The time before YC DevFeed: [The time before YC]() Original publisher: [Read original article]() Author: James Hawkins Published: 2019-09-01T00:00:00Z Content type: article Language: en Sources: [PostHog]() Topics: [Developer experience](), [Koans](), [Process](), [superProductivity]() Tags: [advice](), [code](), [developer-tools](), [developers](), [enterprise](), [founders](), [yc]() ### AI overview PostHog co-founders James and Tim recount their early startup work before joining Y Combinator. They describe a sales-focused product that struggled to attract users, how customer interviews exposed a weak assumption about planning sales one-on-ones, and their shift toward developers after reflecting on how technical debt can slow shipping and frustrate engineers. A short deadline led them to build an MVP and interview developers, resulting in interest from developers at ten companies and a successful YC application. ### Source excerpt I'm James , and I work with Tim . We are the co-founders of PostHog - a current batch YC company. This is us (I'm on the right), just after we got...