Project Fetch: Phase two
…Much of the code it wrote was effective on the first try (which was not the case for Team Claude or Team Claude-less in the original experiment). Indeed, we can see…
Tracked topic
Claude is an AI assistant developed by Anthropic that uses large language models to generate text and support conversational tasks.
In our previous Economic Index reports, we separated out “automation,” where AI directly performs tasks, from “augmentation,” where AI collaborates with a user to perform a task. Here, we found that Claude Code showed dramatically higher automation rates—79% of conversations involved some form of automation, compared to 49% on Claude.ai. We also split automation and augmentation into several subtypes (as discussed in our previous work). “Feedback Loop” patterns, where Claude completes tasks autonomously but with help of human validation (for example, where the user sends any errors back to Cla
Anthropic Economic Index: AI's impact on software developmentOverall, we found that developers commonly use Claude for building user interfaces and interactive elements for websites and mobile applications. Although no single language dominated, the primarily web-focused development languages of JavaScript and TypeScript together accounted for 31% of all queries, and HTML2 and CSS (other languages for user-facing code) together added another 28%. Back-end development languages (used for behind-the-scenes logic, databases, and infrastructure, as well as API and AI development) were also represented: notably, Python was at 14% of queries. However, Python
Anthropic Economic Index: AI's impact on software developmentWe also analyzed which groups of developers might be using Claude. We used our analysis system to identify the type of project (e.g. a personal project vs. a project done for a startup) that best described users’ coding-related interactions. Because we don’t know the real-world context in which Claude’s responses were being used, these analyses rely on uncertain inferences from incomplete data. We therefore treat these findings as more preliminary than the ones described above. Startups appear to be the primary early adopters of Claude Code, and enterprise adoption lags behind. Startup work ac
Anthropic Economic Index: AI's impact on software developmentIn our last report, we analyzed how AI usage varied between augmentative uses, like learning or iterating on an output, and automative uses, like asking the model to directly complete a task or debug errors. Our analysis shows the balance of augmentation and automation is essentially unchanged in our new data, with augmentation still comprising 57% of usage. However, we did see some change in types of automation and augmentation uses—for example, we saw learning interactions, where the user asks Claude for information or explanation about different topics, rise from ~23% to ~28%. We received a
Anthropic Economic Index: Insights from Claude 3.7 Sonnet…Much of the code it wrote was effective on the first try (which was not the case for Team Claude or Team Claude-less in the original experiment). Indeed, we can see…
…Extending tools with code : Claude Code can write scripts, plugins, and generative systems for the software you already use. You can ask it to build a custom shader, script a procedural animation…
…the framework to automatically construct inputs that might fail this property. Our Property-Based Testing Agent Our property-based testing agent is built as a custom Claude Code command. The agent takes…
…Get started with Claude Science at claude.com/science . Related content Introducing Claude Sonnet 5 Sonnet 5 delivers frontier performance across coding, agents, and professional work at scale. Introducing Claude Tag Claude…
…Claude to automate and accelerate this process of adversary emulation. This scaffold allowed natural language prompts to be quickly translated into complex attack chains, in part by pre-defining some code-based…
…Related content Government of Alberta uses Claude to find and fix cybersecurity vulnerabilities across government systems Since 2025, the Government of Alberta has been using Claude Code with both Opus and Sonnet…
Science Long-running Claude for scientific computing Mar 23, 2026 In this post, Siddharth Mishra-Sharma , a researcher on the Discovery team, explains how to apply multi-day agentic coding workflows—test…
…We recently built Claude Code auto mode, which automates safer approvals in order to reduce this approval fatigue. Still, vulnerabilities remain—any probabilistic defense has a non-zero miss rate. 1 The…
…API) and agentic coding tools like Claude Code score highest due to their potential to automate actions. Impact (0–30 points): Captures the real-world effects of the user’s behavior through…
…What shows up in the J-space goes well beyond the text Claude is reading or writing. When Claude reads code with a bug that nobody has pointed out, its J-space…