newsPRIMARY2026-05-27
Tax AI reports 97% accuracy across 7,000 returns at 30+ accounting firms
OpenAI and Thrive described Tax AI, a self-improving tax-prep system used across 30+ firms that processed 7,000 returns and reached up to 97% accuracy. The loop turns accountant corrections into eval targets and narrow Codex fixes, showing a concrete path to vertical agents that improve after deployment.
