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Autonomy and agency

GPT-5-Codex extends agentic coding runs beyond seven hours

OpenAI released GPT-5-Codex across Codex cloud, terminal, IDE, GitHub, and mobile surfaces. The company reported successful independent software-engineering runs lasting more than seven hours, while its system-card addendum documented default sandboxing, disabled network access, prompt-injection training, and High biological and chemical capability treatment.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM62confidence 91/100

Why it moved the index

A released coding agent that can plan, edit, test, and recover over multi-hour tasks materially lengthens practical machine autonomy. Broad product availability and the High biological and chemical capability classification strengthen the nexus. The score is moderated because the longest-run result is developer-reported and default sandbox, network, and review controls constrain external effects.

Assessment history

  1. R1
    Toward 62 · confidence 91

    New dated primary-source model launch and system-card evidence absent from the durable catalogue.

    14 Aug 2026

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DoomBench social sharing card for GPT-5-Codex extends agentic coding runs beyond seven hours.

  1. DoomBench assesses “GPT-5-Codex extends agentic coding runs beyond seven hours” as evidence moving toward doom, with magnitude 62 and confidence 91 out of 100 in the autonomy and agency category.

  2. The DoomBench assessment of “GPT-5-Codex extends agentic coding runs beyond seven hours” is based on reporting from OpenAI and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “GPT-5-Codex extends agentic coding runs beyond seven hours” as follows: OpenAI released GPT-5-Codex across Codex cloud, terminal, IDE, GitHub, and mobile surfaces. The company reported successful independent...

    https://www.doombench.com/news/gpt-5-codex-extends-agentic-coding-runs-beyond-seven-hours-2025-09-15