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OpenAI staffer details GPT-5.6 Sol reasoning levels and modes

An OpenAI staffer has detailed the five reasoning levels within the GPT-5.6 Sol model, ranging from "Light" to "xhigh." Additionally, "Max" and "Ultra" modes are available, which utilize parallel sub-agents. The recommendation is to begin with lower reasoning levels and increase them only as necessary for task complexity. AI

IMPACT Provides guidance on optimizing the use of GPT-5.6 Sol's tiered reasoning capabilities for different tasks.

RANK_REASON The item discusses an internal mapping of a model's features by a staffer, rather than an official release or benchmark.

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OpenAI staffer details GPT-5.6 Sol reasoning levels and modes

COVERAGE [1]

  1. The Decoder TIER_1 English(EN) · Matthias Bastian ·

    OpenAI staffer maps out which of GPT-5.6 Sol's five reasoning levels fits which task complexity

    <p><img alt="" class="attachment-full size-full wp-post-image" height="768" src="https://the-decoder.com/wp-content/uploads/2026/07/openai_logo_vis-2.png" style="height: auto; margin-bottom: 10px;" width="1376" /></p> <p> GPT-5.6 Sol ships with five reasoning levels from "Light" …