OpenAI says Basis completes tax workbook 2x faster with GPT-6 Astra

It is the newer model referenced by OpenAI in this case, which completed a 50-tab tax workbook twice as fast as GPT-5.6 Sol.

Per the source, the key differences are speed (2x on the cited task) and improved user-intent understanding, which gives Basis more confidence in real-world use.

The source does not provide enough accuracy or cost data for an immediate adoption decision; a limited pilot on non-sensitive tax files with manual output comparison is the safer path.