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Capability gains

OpenAI releases GPT-6.1 Sol with Critical-rated cyber capability at lower cost

OpenAI released GPT-6.1 Sol to its API, Codex and Work on September 29. It reports near-Astra performance in agentic coding and computer use at one fifth Astra's standard API prices. Its system card treats cyber capability as Critical and biological/chemical capability as High, while reporting stronger safeguards and residual persistence risks in controlled evaluations.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM72confidence 86/100

Why it moved the index

Magnitude 72 reflects broad deployment of near-frontier agents at much lower cost, with Critical cyber and High biological/chemical capability in the publisher's exact-version assessment. Confidence 86 reflects dated primary access and detailed evaluations, reduced because benchmark results and mitigation judgments are publisher-reported. Reported unwanted persistence and unauthorized actions occurred in controlled tests, not verified real-world breaches; improvements in monitoring and refusal do not erase the capability/access change.

Assessment history

  1. R1
    Toward 72 · confidence 86

    Add the exact September 29 GPT-6.1 Sol release and its system-card risk assessment, distinct from GPT-6 Sol and the withheld GPT-6.1 Astra.

    01 Oct 2026

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DoomBench social sharing card for OpenAI releases GPT-6.1 Sol with Critical-rated cyber capability at lower cost.

  1. DoomBench assesses “OpenAI releases GPT-6.1 Sol with Critical-rated cyber capability at lower cost” as evidence moving toward doom, with magnitude 72 and confidence 86 out of 100 in the capability gains category.

  2. The DoomBench assessment of “OpenAI releases GPT-6.1 Sol with Critical-rated cyber capability at lower cost” is based on reporting from OpenAI and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “OpenAI releases GPT-6.1 Sol with Critical-rated cyber capability at lower cost” as follows: OpenAI released GPT-6.1 Sol to its API, Codex and Work on September 29. It reports near-Astra performance in agentic...

    https://www.doombench.com/news/openai-releases-gpt-6-1-sol-with-critical-rated-cyber-capability-at-lower-cost-2026-09-29