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OpenAI Engineers Turn Codex into Tax Accountant with Over 90% Filing Success

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#1330Prakash
AI:AM
Original postPrakash#1330
AI:AM@AI_in_the_AM

"changing the structure of what Codex uses, the skills, the durable artifacts" is all it takes to turn Codex into a tax accountant with more than a 90% success rate on tax filings.

This was the finding from OpenAI FDEs John de Wasseige and Arthur Fernandes Araujo on how Tax AI learns in production.

Instead of just patching bugs manually, the team turns corrections into Codex skills and durable artifacts so the system stops repeating the same edge-case mistake.

"if you provide a correction, the next time, it can be effective"

7:25 AM · Jun 8, 2026 · 604 Views
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Prakash@8teAPi

The models are smart enough for most white collar work, but still take specialists to set them up with the tools and access they need. That will definitely change within the next year.

AI:AM@AI_in_the_AM

"changing the structure of what Codex uses, the skills, the durable artifacts" is all it takes to turn Codex into a tax accountant with more than a 90% success rate on tax filings.

This was the finding from OpenAI FDEs John de Wasseige and Arthur Fernandes Araujo on how Tax AI learns in production.

Instead of just patching bugs manually, the team turns corrections into Codex skills and durable artifacts so the system stops repeating the same edge-case mistake.

"if you provide a correction, the next time, it can be effective"

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AI:AM@AI_in_the_AM

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Full video: https://briefing.ai-in-the-am.com/p/aiam-self-improving-tax-agents-and-catholic-ai

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