On June 1, 2026, GitHub moved to usage-based billing. The model multipliers in the article apply only to Copilot Pro and Copilot Pro+ subscribers on existing annual plans who remained on legacy premium request-based billing after that date.
Under the legacy system, each LLM (large language model) has a multiplier based on complexity and resource usage—for example, GPT-5.5 has a 57× multiplier, Claude Opus 4.8 has 27×, and Gemini 2.5 Pro has 1×. Auto model selection qualifies for a 10% discount on the multiplier.
Model multipliers are specific to the legacy premium request-based billing model and do not apply to GitHub's new usage-based billing model.
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