…getting Claude to produce high-quality frontend designs, and getting it to build complete applications without human intervention. This work originated with earlier efforts on our frontend design skill and long-running…
…We launch a container (isolated from the Internet and other systems) that runs the project-under-test and its source code. We then invoke Claude Code with Mythos Preview, and prompt it…
…For example, Claude Code is a flexible agent harness, and we used its core primitives through the Agent SDK to build our long-running agent harness . An evaluation suite is a collection…
Announcements More details on Fable 5’s cyber safeguards and our jailbreak framework Jul 2, 2026 Claude Fable 5 has been re-deployed and is now available globally for all users. We…
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