Opus 4.8 on AWS Bedrock does not work

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

When utilizing Opus 4.8 on AWS Bedrock it returns following error:

The model returned the following errors: temperature is deprecated for this model.

Steps to Reproduce

Apply AWS Bedrock key
Add “global.anthropic.claude-opus-4-8” model
Run something in the chat

Expected Behavior

To work like a charm.

Operating System

MacOS

Version Information

Cursor IDE: Version: 3.5.38

For AI issues: add Request ID with privacy disabled

31f45d30-ff7f-48ad-b1cf-20e858c37de0

Does this stop you from using Cursor

Yes - Cursor is unusable

8

Hi @NeuralN3t Thanks for the post. This is a confirmed bug, and we are looking at it and will let you know when it is fixed. Sorry for the inconvenience.

9

Appreciate it!

10

Hi @NeuralN3t We just shipped a fix for this, can you please try again and let us know how it goes?

11

I installed version 3.6.21 and it seems to be generating same bug:

Request ID: d8b91f84-a528-412b-9a9d-0d95b3cdb052

12

Thank you! Deploy is still rolling out so it may take a bit more time before the changes are reflected. Do you want to try again in an hour?

13

Would love to!

14

We got reports that it is working now, should be good!

15

Works like a dream. Thank you Kevin and team!

17

Thank you for confirming my friend!