claude-code - 💡(How to fix) Fix BUG: Max 20x subscription ignored - Claude Code ONLY bills to Extra Usage [5 comments, 3 participants]

1. When I disable Extra Usage -> immediate API error 400
2. Get API error 400 immediately

TL;DR

• The issue may be resolved by verifying the subscription configuration and ensuring that the Max 20x plan is correctly linked to the Opus service in Claude Code version 2.1.96.

Guidance

• Review the subscription settings to confirm that the Max 20x plan is properly configured and linked to the Opus service.
• Check the Claude Code documentation to ensure that the expected behavior for Max subscribers is correctly understood and that no additional configuration steps are required.
• Test the API calls with Extra Usage enabled and then disabled to verify the routing behavior and confirm that the issue is not related to the Extra Usage feature itself.
• Consider reaching out to the Claude Code support team or Boris Cherny for further clarification on the expected behavior and potential fixes.

Example

• No specific code snippet is provided as the issue seems to be related to configuration and subscription settings rather than code.

Notes

• The issue may be specific to the Max 20x plan or the Claude Code version 2.1.96, and further investigation is needed to determine the root cause.
• The problem may not be entirely technical, as it involves subscription and billing configurations.

Recommendation

• Apply workaround: Temporarily enable Extra Usage to allow API calls to work while investigating the subscription configuration issue, as disabling it results in an immediate API error 400.