09 Sep 2026 · 5 min read
agentic-ai
Claude Code's 128K Output Bump: The Boring Update That Fixes a Real Multi-Agent Bottleneck
Anthropic's September Claude Code update quietly raised bashOutputMaxChars and taskOutputMaxChars to 128K and added a file-based subagent system prompt flag. A Tech Lead's read on why this unglamorous change matters more than most model announcements for anyone running fan-out subagent pipelines.
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