Surge AI tax benchmark: Claude Sonnet 5.5 leads AI agents with 10.8%

Oct 29, 2026 · Issue 13 · 1 source, 1 article

Surge AI's new DAYJOB: Tax benchmark tests AI agents on 50 professional tax tasks. Claude Sonnet 5.5 finished first with a pass rate of 10.8%.

Who is affected and how

accountant

The test suggests AI agents are still far from completing professional tax tasks on their own.

Narrative: The accountant is responsible for professional judgment

Sources

• Surge AI launches a new tax-work performance testaiforradalom.hu · Oct 29, 2026 · magyar

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