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Field notes archive.

Research notes, field reports and methodology pieces from the DeepFounder team.

Vibe Coding in 2026: Build Entire Apps by Describing What You Want

What Is Vibe Coding? In early 2025, Andrej Karpathy — former Tesla AI director and OpenAI co-founder — tweeted something that resonated with thousands of developers: "There's a new kind of

Kir Leshkevich · 5 min read Read

Devin AI in 2026: What the First AI Software Engineer Actually Delivers

What Is Devin AI? In March 2024, Cognition Labs introduced Devin — marketed as "the first AI software engineer." The demo videos were impressive: an AI that could take a Jira

Kir Leshkevich · 5 min read Read

Agentic RAG: Building AI Systems That Retrieve, Reason, and Act

What Is Agentic RAG (And Why Should You Care)? If you've built anything with AI in the last year, you've probably hit the same wall: your LLM hallucinates,

Kir Leshkevich · 6 min read Read

AI Agent Orchestration in 2026: The Infrastructure Layer No One Talks About

AI Agent Orchestration in 2026: The Infrastructure Layer No One Talks About AI Agent Orchestration in 2026: The Infrastructure Layer No One Talks About While everyone's debating whether AI agents

Kir Leshkevich · 6 min read Read

Building Production-Ready AI Apps with Local Models: A Complete 2026 Guide

The era of sending your sensitive data to distant servers is over. In 2026, the smartest developers are building AI applications that run entirely on their own infrastructure—with models that rival

Kir Leshkevich · 5 min read Read

Vector Search for AI Applications: From SQLite to Production Scale

Vector Search for AI Applications: From SQLite to Production Scale Vector Search for AI Applications: From SQLite to Production Scale Every solopreneur building AI products in 2026 hits the same wall: how

Kir Leshkevich · 7 min read Read

MCP: The Protocol That's Revolutionizing AI Agent Communication in 2026

MCP: The Protocol That's Revolutionizing AI Agent Communication in 2026 If you're building with AI agents in 2026, you've probably hit the same wall every developer

Kir Leshkevich · 4 min read Read

Building in Public: The Solopreneur's Secret to 10x Faster Growth

Building in public turns your development process into your marketing engine. Here's exactly how successful solopreneurs do it in 2026.

Kir Leshkevich · 7 min read Read

How to Build a 0k MRR SaaS in 90 Days: The Solopreneur Blueprint

How to Build a $10k MRR SaaS in 90 Days: The Solopreneur Blueprint Most solopreneurs dream of building a profitable SaaS, but 95% never make it past $1k MRR. After analyzing 47

Kir Leshkevich · 4 min read Read

The Death of the Traditional Startup Accelerator (And What's Replacing It in 2026)

The Death of the Traditional Startup Accelerator (And What's Replacing It in 2026) Y Combinator just announced their smallest batch in five years. Techstars closed three programs. 500 Startups rebranded

Kir Leshkevich · 3 min read Read

The Pomodoro Technique 2.0: How AI-Powered Focus Sessions Are Revolutionizing Solopreneur Productivity

The 25-minute productivity hack that's been around since the 1980s just got an AI upgrade Francesco Cirillo developed the Pomodoro Technique in the late 1980s using nothing but a kitchen

Kir Leshkevich · 6 min read Read

How to Build Your First Paid Newsletter (Real Example + Numbers)

How to Build Your First Paid Newsletter (Real Example + Numbers) Everyone's talking about newsletters being "the new blog," but most creators give up after 3 months because they&

Kir Leshkevich · 4 min read Read