GPT 5.6 Outperforms Competitors in Eval
soumitrashukla9 · x · 2026-07-10
A team used the Shortcut production evaluation framework to compare GPT 5.6-Sol, Fable, and Opus on two internal spreadsheet task benchmarks. Results showed Sol costs about half as much as Opus while achieving similar or better accuracy, requiring fewer turns, and running faster. They noted that while past GPT models were often unfit for default deployment due to unstable formatting, this gap has now narrowed, though Fable remains the best.
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