[IFC_LLC]

Ugh...

Invalid request The request couldn't be completed. View details API Error: 400 messages.1.content.7: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.

I would rather not. 4.6 was fine. 4.7 got to be fine 1 week after the release. Now 4.8. No difference, same thing.

But the app is broken and nothing works. So now I have to regress to different clients and wait it out while it becomes workable again.

[ferris-booler]

I'm hitting this too! And I assumed it was a backwards-compatibility issue with my live conversation with Opus 4.7, but then I hit it in a fresh conversation with Opus 4.8. Vibe code release bug I guess?

[IFC_LLC]

I mean, switching back to 4.7 does not work either. So console it is. But vibe release - for sure.

And I'm paying money for this.

[KAdot]

Going back to 4.7 with `claude --model claude-opus-4-7` fixed it for me.

[pheller]

I'm getting this near constantly even after toggling to a different model and compacting. Ugh indeed.