OpenAI Names GPT‑5.6 Preferred Model for Microsoft 365 Copilot Amid Cost‑Cutting Moves

Key Points

• OpenAI announced GPT‑5.6 as the "preferred model" for Microsoft 365 Copilot.
• Microsoft has begun using its own MAI models in Word and Excel to cut costs.
• The "preferred model" label suggests continued OpenAI power for Copilot apps.
• OpenAI’s blog highlighted the partnership’s focus on broad AI deployment.
• Details of the "preferred model" status remain undefined.
• Both companies aim to balance cost savings with cutting‑edge AI performance.