CLAUDE LABJP
CORPS — Anthropic unveils Claude Corps (Jun 11), a $150M national fellowship placing 1,000 early-career workers inside US nonprofits; the first cohort starts in OctoberSUBAGENTS — Claude Code sub-agents can now spawn their own sub-agents, up to 5 levels deep — multi-stage delegation workflows out of the boxWORKFLOWS — Dynamic workflows arrive in research preview across CLI, Desktop, and VS Code for codebase-wide bug hunts and large migrations (Max/Team/Enterprise)BILLING — 2 days to the Jun 15 change: Agent SDK, headless runs, and GitHub Actions move to monthly credits ($20/$100/$200); Sonnet 4 and Opus 4 retire from the API the same dayFABLE5 — Fable 5 remains included free on Pro, Max, Team, and Enterprise through Jun 22CODE80 — IPO coverage reports Claude now writes over 80% of its own code, up from under 10% in February 2025CORPS — Anthropic unveils Claude Corps (Jun 11), a $150M national fellowship placing 1,000 early-career workers inside US nonprofits; the first cohort starts in OctoberSUBAGENTS — Claude Code sub-agents can now spawn their own sub-agents, up to 5 levels deep — multi-stage delegation workflows out of the boxWORKFLOWS — Dynamic workflows arrive in research preview across CLI, Desktop, and VS Code for codebase-wide bug hunts and large migrations (Max/Team/Enterprise)BILLING — 2 days to the Jun 15 change: Agent SDK, headless runs, and GitHub Actions move to monthly credits ($20/$100/$200); Sonnet 4 and Opus 4 retire from the API the same dayFABLE5 — Fable 5 remains included free on Pro, Max, Team, and Enterprise through Jun 22CODE80 — IPO coverage reports Claude now writes over 80% of its own code, up from under 10% in February 2025
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API & SDK/2026-06-13Advanced

Auditing pinned model IDs before claude-sonnet-4 and claude-opus-4 retire from the API

On June 15, claude-sonnet-4 and claude-opus-4 retire from the API. Here is how to find every pinned model ID before then, measure output parity, and cut over safely with an alias layer and a fallback.