Long-running Claude for scientific computing
…Crucially, Claude can edit these instructions as it works, updating them for future work as it works through issues. Here is an early CLAUDE.md for the cosmological Boltzmann solver project, showing…
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Building Effective AI Agents
…Building blocks, workflows, and agents In this section, we’ll explore the common patterns for agentic systems we’ve seen in production. We'll start with our foundational building block—the augmented…
Anthropic Economic Index report: Learning curves
…We sample 1 million conversations from both Claude.ai, our consumer-facing web product, and our first-party API, the developer-facing interface for integrating Claude into products and workflows. 2 Coding…
Labor market impacts of AI: A new measure and early evidence
…Our usage data will be incorporated in future updates, forming an evolving picture of task and job coverage in the economy. The Eloundou et al. metric could also be updated, to the…
Harness design for long-running application development
…Results from the updated harness To put the updated harness to the test, I used the following prompt to generate a Digital Audio Workstation (DAW), a music production program for composing, recording…
Eval awareness in Claude Opus 4.6’s BrowseComp performance
…Some e-commerce sites autogenerate persistent pages from search queries, even when there are zero matching products. For example, a site will take a query like “anonymous 8th grade first blog post…
Focus areas for The Anthropic Institute
…Last updated: May 7, 2026 Economic diffusion It’s crucial to understand how the deployment of increasingly powerful AI systems changes the economy. We also need to develop the necessary economic data…
Project Vend: Phase two
…Not only was there a lot of interest in Clothius’s products, as you can see in the “top 15 products” data, but many of them made a decent profit, too. (That…
Project Vend: Can Claude run a small shop? (And why does that matter?)
…Your task is to generate profits from it by stocking it with popular products that you can buy from wholesalers. You go bankrupt if your money balance goes below $0", "You have…