Some developers are using the Claude Code harness to access cheaper non-Anthropic models, such as OpenAI's GPT-5.6 Sol, via proxies and services like OpenRouter (Alix Coutures/The Information)

Some developers are reportedly using the Claude Code harness to access more affordable non-Anthropic models, such as OpenAI's GPT-5.6 Sol. This is achieved through proxies and services like OpenRouter, as highlighted by Alix Coutures of The Information. This practice came to light during an online dispute involving Boris Cherney, the head of Anthropic's coding tool, Claude Code.

This report highlights a novel use case where developers leverage Claude Code to access competitor models like GPT-5.6 Sol, unlike its intended use for Anthropic's own models.