Claude Code's Impact and Future 100% of Boris Cherny's code is AI-generated, with no manual edits since November. He ships 10-30 pull requests daily. Productivity per engineer has increased 200% due to AI tools like Claude Code. The speaker predicts that coding is largely solved and in a year or two, learning to code may not be as critical. The future vision is a world where everyone can program and build software easily. Claude Code's growth is accelerating, with daily active users doubling monthly. The initial hackathon project, Claude Code, has transformed software engineering and is expanding to other functions. Claude Code is now estimated to be responsible for 4% of all GitHub commits, with predictions of reaching 20% by year-end. Senior engineers, including Boris, are no longer writing code manually. The Genesis and Evolution of Claude Code Claude Code started as a "little hack" on the Anthropic Labs team, alongside other projects like MCP and the desktop app, following a trajectory of coding, then tool use, then computer use. The initial Claude Code prototype, ClaudeCLI, demonstrated the model's ability to figure out how to use tools (like a batch tool) to answer questions without explicit instructions. The terminal-based interface was chosen for ease of development initially, and its ability to keep up with rapid model improvements. Despite a slow initial external reception, Claude Code's daily active users grew rapidly once users understood its potential. The principle of "latent demand", where users find surprising or unintended uses for a tool, was key to Claude Code's success. Claude Code's success led to its integration into various platforms like iOS, Android, desktop apps, IDE extensions, Slack, and GitHub. User feedback has been crucial for Claude Code's continuous improvement and development. The Shifting Landscape of Software Engineering Predictions from a year ago about AI writing 100% of code are now becoming reality. Boris predicted in May 2025 that an IDE might not be necessary by year-end, a prediction that was met with surprise but proved accurate for his personal workflow by November. The exponential growth of AI capabilities, a core belief at Anthropic (evidenced by co-founders' work on scaling laws), suggests continued rapid advancement. Innovation requires psychological safety for experimentation, with an acceptance that many ideas may not succeed. Boris emphasizes the importance of pulling on a thread when you feel you're onto something, even if it's not immediately obvious. Boris now writes 100% of his code using Claude Code and has not edited a line manually since November. While code is AI-generated, human review is still necessary for correctness and safety, with Claude also performing automatic code reviews. The Next Frontier Beyond Coding Claude is evolving to be more proactive, analyzing feedback, bug reports, and telemetry to suggest bug fixes and new features, acting more like a "co-worker." Coding is considered "largely solved" for many types of programming. The focus is shifting to adjacent areas and general tasks that can be automated, with Claude used for tasks like paying bills and project management. Claude Code and Co-work are being used to analyze feedback channels like Slack threads to identify actionable insights. AI's ability to improve rapidly means that gains made through specific scaffolding or fine-tuning can be quickly surpassed by more general, capable models. Productivity, Innovation, and AI at Anthropic Engineering productivity has seen a 200% increase with Claude Code, a gain considered "insane" compared to previous industry improvements of a few percentage points. The rapid pace of AI advancement has normalized unprecedented change in tech. Users need to adapt to newer models, as skills and approaches developed for older versions may become outdated. A key principle is to let AI handle tasks, as demonstrated by a newer engineer using Claude Code to debug a memory leak more effectively than Boris. The advice to "underfund things a little bit" at the start encourages teams to rely on AI and find efficient solutions. Encouraging speed and allowing individuals to ship quickly is paramount, with AI as a tool to achieve this. When building AI products, it's recommended to give engineers unlimited tokens for experimentation, optimizing for cost later. Some engineers are spending hundreds of thousands of dollars a month on tokens, indicating significant AI usage. The Changing Nature of Programming and AI Adoption Programming has historically evolved from hardware to software, and now to AI-driven generation. Boris doesn't worry about his own skills atrophying, viewing programming as a continuum of evolving tools. The historical analogy of the printing press is used to describe the democratizing and transformative potential of AI in programming. The shift is from writing code to describing desired outcomes to AI. Boris views programming as a practical tool for building things, not an end in itself, though acknowledges some enjoy the art of coding. AI is expected to impact roles adjacent to engineering, such as product management, design, and data science, and eventually any computer-based work. The term "agent" refers to an AI that can use tools and act in the world, not just converse. Concerns about AI's impact on jobs are acknowledged, but the focus is on increased enjoyment and productivity for many. Building and Using AI Products Key advice for building AI products includes not boxing in the model, providing tools and goals, and letting the AI figure out the execution. The "bitter lesson" suggests betting on more general models over highly specific or fine-tuned ones, as general models tend to outperform in the long run. Building for the model six months in the future, rather than the current model, is a strategy for long-term product success. Assumptions for future models include improved tool use, longer execution times, and greater autonomy. For using Claude Code: use the most capable model (Opus 4.6) with "maximum effort" enabled, as it can be more token-efficient. "Plan mode", which prevents immediate code generation and allows for interactive planning, is highly recommended. Experimenting with different interfaces (terminal, desktop app, mobile, Slack) is encouraged. Competition in the coding agent space is seen as beneficial for driving innovation. Anthropic's approach prioritizes user feedback and building a good product over closely monitoring competitors. Safety, Research, and the Future of AI Anthropic's work involves studying AI safety at three levels: alignment/mechanistic interpretability (internal model workings), evals (laboratory settings), and real-world behavior. Mechanistic interpretability aims to understand the specific functions of neurons within AI models. Early release of products like Claude Code is partly for studying their real-world safety and behavior. Anthropic open-sources research and tools (like the Claude Code sandbox) to promote safe AI development across the industry ("race to the top"). Anxiety about agents not working is acknowledged, but Boris mitigates this by running multiple agents concurrently. The speaker is from Odessa, Ukraine, and shares a personal connection with the interviewer, also born in Odessa. Boris's future plans post-AGI include making miso, a long-term, patient process that contrasts with rapid AI development. The core belief at Anthropic is that AI development progresses through coding, tool use, and computer use, which is key to understanding safety. Despite rapid growth, AI adoption is still considered early (1% done).