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Autonomy and agency

Claude Opus 4.8 extends long-running and multi-agent work

Anthropic released Claude Opus 4.8 globally with stronger agentic and computer-use performance plus dynamic workflows capable of coordinating hundreds of parallel subagents.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM70confidence 98/100

Why it moved the index

The release improved unattended tool use, computer use, and long-running coordination while making codebase-scale work by hundreds of subagents available to paying users.

Assessment history

  1. R1
    Toward 70 · confidence 98

    New historical launch story for an already authoritative exact-version model record.

    11 Aug 2026

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  1. DoomBench assesses “Claude Opus 4.8 extends long-running and multi-agent work” as evidence moving toward doom, with magnitude 70 and confidence 98 out of 100 in the autonomy and agency category.

  2. The DoomBench assessment of “Claude Opus 4.8 extends long-running and multi-agent work” is based on reporting from Anthropic and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Claude Opus 4.8 extends long-running and multi-agent work” as follows: Anthropic released Claude Opus 4.8 globally with stronger agentic and computer-use performance plus dynamic workflows capable of coordinating...

    https://www.doombench.com/news/claude-opus-4-8-extends-long-running-and-multi-agent-work-2026-05-28