#Y Combinator
303 related articles
Expert Opinions·2 min
Zero Tech Background, Seven-Figure Monthly Revenue with AI Coding — What Did He Do Right?
A non-technical introvert used AI coding tools to solve his own communication pain point and hit seven-figure monthly revenue. A breakdown of his full path from pain point discovery to product launch and explosive growth.
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Research·1 min
AI Cracks an Erdős Conjecture for the First Time: A Historic Breakthrough on an Unsolved Math Problem
AI independently solves the famous Erdős conjecture in combinatorial geometry for the first time, marking a historic breakthrough in unsolved mathematics.
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Deep Dives·1 min
Qwen3.5 Deep Dive: Hybrid Attention Architecture Achieves 19x Speedup for Long Context
Deep analysis of Alibaba's open-source Qwen3.5 hybrid attention architecture, how Gated Delta Net achieves 19x speedup at 256K context, and multimodal results surpassing Gemini 3 Pro and GPT-5.2.
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Tech Frontiers·3 min
DeepSeek V3.2 Released: Reasoning on Par with GPT-5, First to Integrate Deep Thinking into Tool Use
DeepSeek V3.2 is officially released and open-sourced with reasoning on par with GPT-5, second only to Gemini 3.0 Pro. First to integrate deep thinking into tool use, with top-tier agent capabilities and an IMO 2025 gold medal.
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Product Reviews·3 min
ChatGPT vs Gemini vs Claude: Who Can Build Mario 64 from Scratch?
Testing ChatGPT 5.2, Gemini 3 Pro, and Claude 4.5 building Super Mario 64 from scratch with the same prompt. Gemini wins overall with best playability, ChatGPT has best visuals but only 1 fps, Claude fails at collision detection.
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Tutorials·3 min
3 Prompting Strategies to Guide AI Toward Original Solutions | With Rocket Thruster Case Study
How to use prompt engineering to make AI break from conventional solutions and create unique paths? This article details three strategies—exclusion, constraint-driven, and multi-round iteration—with a real generative design rocket thruster case.
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Expert Opinions·2 min
Agent Observability in Practice: Self-Diagnostics, Implicit Signals, and Production Monitoring Systems Explained
Deep dive into AI Agent observability: self-diagnostics, explicit and implicit signal monitoring, trajectory visualization, and root cause analysis for production Agent systems.
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Tutorials·3 min
Claude Code Advanced Tutorial: Subagent Parallel Processing, MCP Tool Integration & Skills Automation
Deep dive into three advanced Claude Code features: Subagent parallel processing, MCP protocol for external tools like Playwright, and Skills for workflow automation. Includes practical examples.
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Tech Frontiers·4 min
ApiFlow Challenge: AI Generates Automation Workflows from a Single Sentence — Submit Your Use Case to Win $100 Computing Credits
ApiFlow is an AI-native integration platform that generates automation workflows from a single sentence. The team is seeking 10 real-world scenarios — participate to win $100 computing credits and more.
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Product Reviews·3 min
gstack Explained: A Complete Breakdown of Garry Tan's 23 Open-Source Claude Code Tools
YC CEO Garry Tan open-sourced gstack, a Claude Code toolset with 23 role-based AI tools covering CEO, Designer, Engineering Manager, QA and more. 97K+ GitHub stars. Full breakdown inside.
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Tech Frontiers·3 min
OpenAI's Triple Launch: A Deep Dive into O3, O4-mini, and Codex CLI
Deep dive into OpenAI's latest O3 multimodal model, O4-mini lightweight model, and open-source Codex CLI tool, covering benchmarks, use cases, and impact on AI development.
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Industry Insights·4 min
The Dismantling of Windsurf: How an AI Coding Unicorn's Moat Collapsed Overnight
AI coding unicorn Windsurf, valued at $3B, was dismantled in one week — OpenAI deal collapsed, Google aquihired the team, Cognition grabbed the remains. A deep dive into AI startup moat fragility.
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Tech Frontiers·4 min
Cognition's Acquisition of Windsurf: The Capital Power Play Behind a Weekend Lightning Deal
Cognition acquires Windsurf's core assets at lightning speed, gaining $82M ARR and hundreds of thousands of DAU. A deep dive into the OpenAI, Google, and Anthropic power plays reshaping the AI coding tool market.
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Tech Frontiers·3 min
Inside the SJSU Hackathon Winning Projects: A Practical Guide to Building High-Impact AI Agents
Deep analysis of SJSU hackathon-winning AI Agent projects covering architecture design, core elements, and UX optimization—a practical guide from prototype to product.
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Expert Opinions·3 min
Sam Altman in Conversation with Garry Tan: How OpenAI and YC Are Co-Shaping the AI Startup Ecosystem
Sam Altman and YC President Garry Tan discuss the convergence of OpenAI's foundation models and YC's startup ecosystem, revealing key signals about the next phase of AI entrepreneurship.
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Tutorials·4 min
LangChain Deep Agents in Practice: Ten Agent Development Pain Points and Their Solutions
Deep dive into LangChain Deep Agents paradigm, analyzing ten Agent development pain points including tool sprawl and context pollution, with practical enterprise solutions using Deep Research.
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Tech Frontiers·2 min
YC Holds 0.6% Stake in OpenAI, Worth Over $5 Billion: One of the Most Successful Bets in Venture Capital History
Y Combinator holds ~0.6% of OpenAI, worth over $5 billion at the $852B valuation. John Gruber revealed this long-obscure figure, highlighting YC's extraordinary early AI bet.
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Deep Dives·3 min
Why Is AI Agent Testing So Hard? How Simulation Testing Cracks the Infinite Input Space Problem
AI Agents face infinite input spaces and non-deterministic outputs. Learn how simulation testing systematically validates Agent reliability through scenario generation, environment simulation, and behavior evaluation.
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Deep Dives·3 min
Ruflo Open-Source Framework: Claude Multi-Agent Orchestration Platform Architecture and Practical Guide
Deep analysis of Ruflo open-source multi-agent orchestration platform, covering swarm intelligence, RAG integration, Claude Code native support, and comparisons with LangGraph and CrewAI.
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Tech Frontiers·3 min
YC's 0.6% Stake in OpenAI Now Worth Over $5 Billion — One of the Most Successful VC Bets in History
Y Combinator holds ~0.6% of OpenAI, worth over $5 billion at the latest $852B valuation. From Sam Altman's YC presidency to today's staggering paper returns, this deal ranks among VC history's greatest hits.
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