Developers Route Claude Code at Rival Models via OpenRouter

The Information reported that a growing number of developers are pointing the Claude Code CLI at OpenAI, Google, DeepSeek and other non-Anthropic backends, just after Anthropic tightened the tool's paid weekly limits.

The mechanics have been public for months. Setting the ANTHROPIC_BASE_URL environment variable redirects Claude Code's Anthropic-format requests to any compatible endpoint, and the open-source Claude Code Router "is a local gateway that intercepts Claude Code's Anthropic-format requests and re-routes them to OpenAI, Gemini, DeepSeek, OpenRouter, Mistral, Moonshot and more." OpenRouter maintains an official Claude Code integration guide, and community writeups walk through swapping the default Sonnet alias for cheaper or non-Anthropic models.

Anthropic sharpened the incentive on September 14. It replaced a temporary 50% boost with a permanent 25% increase over the May baseline, which nets to roughly a 17% cut from what paid users had the day before. The company cited "difficulty securing enough compute to sustain the higher limits permanently." The change applies to Pro, Max, Team, and seat-based Enterprise tiers.

The workaround has a ceiling. Per OpenRouter's integration notes, "extended thinking is only supported on Anthropic Claude models," tool use is not supported on all models, and prompt caching varies by model.