●MODEL — Claude Sonnet 5 becomes the default across all plans, with stronger planning, tool use, and autonomy●PRICE — Sonnet 5 launches at $2 input / $10 output per million tokens through August 31●MODEL — Sonnet 5 nears Opus 4.8 performance at a lower price for always-on agents●CODE — Claude Code adopts Sonnet 5 as default with a native 1M-token context window●CODE — Claude Code adds sandbox credential blocking and org-level model restrictions●CLOUD — Claude is generally available in Microsoft Foundry on Azure with Azure-native access●MODEL — Claude Sonnet 5 becomes the default across all plans, with stronger planning, tool use, and autonomy●PRICE — Sonnet 5 launches at $2 input / $10 output per million tokens through August 31●MODEL — Sonnet 5 nears Opus 4.8 performance at a lower price for always-on agents●CODE — Claude Code adopts Sonnet 5 as default with a native 1M-token context window●CODE — Claude Code adds sandbox credential blocking and org-level model restrictions●CLOUD — Claude is generally available in Microsoft Foundry on Azure with Azure-native access

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Claude API¹ Message Batches¹ batch processing¹ error handling¹

⬡ API & SDK/2026-07-02Advanced

When 41 of 20,000 Message Batches Requests Quietly Vanished — Field Notes on Reconciling and Requeuing Partial Failures

processing_status: ended does not mean every request succeeded. How errored and expired results hide inside a finished batch, and how a custom_id ledger catches every gap and requeues safely — with real cost and timing numbers.