Tell HN: Using Claude Code with official 3rd party APIs seems broken

It's weird, but using Claude Code (CC) with GLM 4.5 from Z.ai, I spent $5 just starting CC and asking it to read the spec and guideline files. This on an API that advertises $0.6 per million tokens input, and $2.2 per million tokens output.

Then, I noticed that after the original prompt, any further prompt I gave CC (other that approving its actions) did not have any effect at all on it. Yes, any prompt is totally ignored. I have to stop CC and restart with the new prompt for it to take effect.

This is really strange to me. Does CC have some way of detecting when it is running against an API other than Anthropic's? The massive cost and/or token usage and crippled agentic mode is clearly not due to GLM 4.5 not being capable. Either CC is crippled in some way when using a 3rd party API, or else Z.ai's API is somehow not working properly.