Anthropic Economic Index report: Learning curves
…Model selection The different Claude model classes (Haiku, Sonnet, and Opus) offer tradeoffs in terms of cost, speed, and performance. The Opus class of models uses the most tokens and excels at…
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Project Vend: Can Claude run a small shop? (And why does that matter?)
…We look forward to sharing updates as we continue to explore the strange terrain of AI models in long-term contact with the real world. Acknowledgments We’re very grateful to Andon…
Measuring AI agent autonomy in practice
…Model developers should consider training models to recognize their own uncertainty. Training models to recognize their own uncertainty and surface issues to humans proactively is an important safety property that complements external…
Project Vend: Phase two
…an older model (phase one used Claude Sonnet 3.7) to newer, smarter ones (phase two used Claude Sonnet 4.0 and later Sonnet 4.5). We also updated Claudius’s instructions…
Building Effective AI Agents
…or updating tickets can be handled programmatically; and Success can be clearly measured through user-defined resolutions. Several companies have demonstrated the viability of this approach through usage-based pricing models that…
Equipping agents for the real world with Agent Skills
Engineering at Anthropic Equipping agents for the real world with Agent Skills Update: We've published Agent Skills as an open standard for cross-platform portability. (December 18, 2025) As model capabilities…
Introducing advanced tool use on the Claude Developer Platform
Engineering at Anthropic Introducing advanced tool use on the Claude Developer Platform The future of AI agents is one where models work seamlessly across hundreds or thousands of tools. An IDE assistant…
Coding agents in the social sciences
…An initial update An early update on what we've learned from Project Glasswing. 2028: Two scenarios for global AI leadership Our views on the AI competition between the US and China…
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…
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