# Surge AI's DAYJOB: Tax benchmark finds AI agents pass fewer than 11% of tax assignments

> Original title: Dayjob: Tax – evaluating AI agents on 50 professional tax assignments

- Source: Hacker News · AI (150+ points)
- Published: 2026-10-28T15:46:30.000Z
- Bad Influence: https://badinfluence.news/items/ib10i1gvf38twapj5e03ipc37
- Original: https://surgehq.ai/blog/dayjob-tax

## Summary

Surge AI introduces DAYJOB: Tax, a benchmark of 50 professional tax assignments across eight practice areas. Claude Sonnet 5.5 leads with a 10.8% pass rate at a 95% rubric threshold, followed by Claude Fable 5.1 at 9.6% and Claude Opus 5.5 at 9.2%. The source says agents often failed to flag issues the client never raised, such as a residence-based sale exclusion that could expire in August 2027.