GPT-5.6 Sol looked cheaper across five test cases, and that changes agent margins
PrajwalTomar_ · x · 2026-07-25
Across five test cases, GPT-5.6 Sol was consistently cheaper for similar tasks. That matters little in a single build, but at real agent volume — across clients and every day — the gap becomes margin.
The higher-priced model still wins on high-stakes reasoning. The real lesson is to choose based on the task, not the launch-day leaderboard, and to measure models inside your own agent workflow with cost visible on every run.
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