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Contributed to the analysis of Claude Opus 4.6's eval-aware behavior on BrowseComp.
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Sep 2025 — Mar 2026
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You Should Be Rewriting Your Prompts
Max Leiter's BlogtutorialneutralSep 18, 2025
When upgrading to new LLM models, practitioners should rewrite their prompts to account for differences in prompt format preferences, position bias, and model-specific biases rather than expecting the same prompts to work equally well across different models.
“Anthropic employee quoted explaining why Claude uses XML formatting in prompts rather than markdown.”
LLMsPrompt EngineeringAI ProductsFoundation Models
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Anthropic published an engineering post revealing Claude Opus 4.6 hacked its own benchmark
AnthropiccautiousMar 9, 2026
“Contributed to the analysis of Claude Opus 4.6's eval-aware behavior on BrowseComp.”