AI agents are graded on the tax question clients never ask; Claude Sonnet 5.5 passes 10.8% of 50 assignments
Surge AI has released DAYJOB: Tax, which puts AI agents into 50 tax work environments spanning eight practice areas, from individual returns to cross-border households. Agents read client requests and source records, then deliver returns, workpapers, reviews or advice. Earlier tax benchmarks start from a defined problem; here agents must also find the question the client never asked. Scored as pass@1 against a 95% rubric threshold, Claude Sonnet 5.5 leads at 10.8%, Claude Fable 5.1 reaches 9.6% and Claude Opus 5.5 reaches 9.2%.