Nothing new but you can configure Claude Code to use GPT5 as its LLM model: https://docs.litellm.ai/docs/tutorials/claude_responses_api

Is there a way to route Claude Code through a GitHub Copilot subscription?

	▲	adhamsalama 6 days ago \| parent [-]
		You can use GitHub Copilot as an API (free unlimited gpt-4.1) with the generated token used in the JetBrains extension, but it's really stupid so I canceled the subscription and subscribed to Claude.