- openai.model.name: gpt-4o-mini -> gpt-5-nano (bash.05/bash.40, 3x cheaper input) - openai.model.name.text: gpt-4o -> gpt-5-mini (bash.25/.00, 10x cheaper input) - targeting.ai.audience-model: gpt-4o -> gpt-5-mini - targeting.ai.budget-model: gpt-4o-mini -> gpt-5-nano - targeting.ai.creatives-model: gpt-4o -> gpt-5-mini - fix: max_tokens -> max_completion_tokens (GPT-5 requires new param name)