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Capability gains

OpenAI releases GPT-6 Sol and Luna for agentic work at lower cost

OpenAI released GPT-6 Sol and GPT-6 Luna in its API, ChatGPT Work and Codex. The company reports stronger long-horizon coding, professional-work and computer-use evaluations than their GPT-5.6 predecessors while halving listed API prices. The models extend GPT-6-class agent capability to more routine and high-volume workflows, though benchmark results do not establish real-world loss of control.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM58confidence 80/100

Why it moved the index

Released, lower-cost models with stronger reported multistep coding and computer-use performance widen access to consequential autonomous work. Official API availability and pricing are directly verified; benchmark gains are mostly vendor-reported and do not imply an observed control failure.

Assessment history

  1. R1
    Toward 58 · confidence 80

    First dated public release and exact API availability for both GPT-6 versions.

    23 Sept 2026

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  1. DoomBench assesses “OpenAI releases GPT-6 Sol and Luna for agentic work at lower cost” as evidence moving toward doom, with magnitude 58 and confidence 80 out of 100 in the capability gains category.

  2. The DoomBench assessment of “OpenAI releases GPT-6 Sol and Luna for agentic work at lower cost” is based on reporting from OpenAI Developer Community and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “OpenAI releases GPT-6 Sol and Luna for agentic work at lower cost” as follows: OpenAI released GPT-6 Sol and GPT-6 Luna in its API, ChatGPT Work and Codex. The company reports stronger long-horizon coding,...

    https://www.doombench.com/news/openai-releases-gpt-6-sol-and-luna-for-agentic-work-at-lower-cost-2026-09-22