Basis Completes 50-Tab Tax Workbook 50% Faster Using GPT-6 Astra

On September 28, 2026, Basis completed a 50-tab tax workbook in half the time using the new GPT-6 Astra model compared to the previous GPT-5.6 Sol. This represents a 50% reduction in time for the task, showcasing significant improvements in efficiency.

Mitch Troyanovsky, co-founder of Basis, stated that "GPT-6 Astra does a better job of really understanding the intent of the user and the problem," indicating enhanced comprehension capabilities of the new model. Additionally, Basis reported a 20% improvement in their internal evaluation scores with GPT-6 Astra, further validating its performance.

This development follows a trend in the industry where AI models are increasingly being leveraged to automate complex tasks, as seen in recent reports of other companies like Proaction boosting sales by 60% using Codex. The advancements in AI capabilities, particularly with models like GPT-6 Astra, are likely to influence how accounting and tax-related tasks are approached in the future.