Anthropic Resets All Pro/Max Usage Allowances Over Claude Code Bug

On June 1, 2026, Anthropic announced that it had fixed a bug in which some Claude Code sessions spawned excessive parallel subagents and consumed rate limits faster than expected, and that it had reset both the 5-hour limit and the weekly limit for all users on Pro/Max plans.

What Happened

The official developer account @ClaudeDevs explained that a bug had caused some Claude Code sessions to generate excessive parallel subagents, consuming usage faster than expected. After fixing the bug, the company reset both the 5-hour rolling window and the weekly rate limit for all affected users on Pro/Max plans.

According to a follow-up post in the thread, the issue was related to processing of Opus 4.8 requests, in which the model triggered more parallel tool calls than intended. It was also explicitly stated that this was unrelated to dynamic workflows.

Background and Significance

Claude Code is Anthropic's agentic coding tool, distinguished by its ability to launch subagents in parallel within a main session, each with independent context and tool sets. This parallelism is effective for task delegation and context management, but in heavy users' environments it can rapidly consume compute resources and tokens.