GitHub Copilot charges GPT 5.5 with a 57x multiplier per request from June first (docs.github.com)

GitHub has announced a significant shift in its billing model for Copilot Pro and Pro+ subscribers, effective June 1, 2026. The new usage-based billing system introduces model multipliers that dictate how much each request will cost based on the complexity and resource demands of the AI model used. Notably, the GPT-5.5 model stands out with a staggering multiplier of 57, indicating it will consume a large portion of the user's premium request allowance for each request made. This change primarily affects users who opted to stay under the legacy request-based model. The implications of this altered billing structure are profound for developers and organizations utilizing GitHub Copilot. Higher multipliers for advanced models mean that leveraging cutting-edge AI capabilities could lead to increased costs, prompting users to rethink their usage strategies. Furthermore, the introduction of discounts for users employing auto model selection could incentivize more cost-effective choices. This move reflects a broader trend in the AI/ML community towards more transparent and scalable pricing structures, as companies seek to balance resource management with access to powerful generative models.