[BUG] Claude Opus 4.6 on Bedrock incorrect model ID

[cogwirrel]

Problem (one or two sentences)

The model id anthropic.claude-opus-4-6-v1:0 is incorrect for bedrock.

Context (who is affected and when)

Users choosing to use Opus 4.6 with Bedrock as the model provider.

Reproduction steps

1. Configure provider Amazon Bedrock
2. Select model anthropic.claude-opus-4-6-v1:0
3. Enter a prompt and observe error "The provided model identifier is invalid"

Expected result

Able to configure claude opus 4.6 with bedrock as model provider

Actual result

Unable to configure without using a custom model id

Variations tried (optional)

Enter a custom model with id anthropic.claude-opus-4-6-v1 (ie no :0 and this works)

App Version

3.47.0

API Provider (optional)

Amazon Bedrock

Model Used (optional)

Claude Opus 4.6

Roo Code Task Links (optional)

No response

Relevant logs or errors (optional)

Date/time: 2026-02-05T22:48:08.837Z
Extension version: 3.47.0
Provider: bedrock
Model: anthropic.claude-opus-4-6-v1:0

Provider ended the request: Unknown Error: The provided model identifier is invalid.

[roomote]

I've analyzed this issue and here's my proposed implementation plan:

Problem: The Bedrock model ID anthropic.claude-opus-4-6-v1:0 is incorrect - AWS Bedrock does not recognize this model with the :0 suffix.

Solution: Update the model ID from anthropic.claude-opus-4-6-v1:0 to anthropic.claude-opus-4-6-v1 (removing the :0 suffix).

Files to modify: packages/types/src/providers/bedrock.ts

Changes:

1. Line 122: Update the model definition key from "anthropic.claude-opus-4-6-v1:0" to "anthropic.claude-opus-4-6-v1"
2. Line 502: Update the entry in BEDROCK_1M_CONTEXT_MODEL_IDS array
3. Line 517: Update the entry in BEDROCK_GLOBAL_INFERENCE_MODEL_IDS array

This is a minimal, targeted fix that corrects the model identifier to match what AWS Bedrock expects, allowing users to use Claude Opus 4.6 with Bedrock without needing to enter a custom model ID.

Please mention @roomote in a comment saying that you approve this plan, and I'll proceed with the implementation.

[cogwirrel]

@roomote I approve this plan! Though I'm not sure if I have the authority to do so ;)

Bedrock documentation includes the proposed model id anthropic.claude-opus-4-6-v1 here: https://docs.aws.amazon.com/bedrock/latest/userguide/models-supported.html

[roomote]

Thanks for the approval! I will proceed with implementing the fix to correct the Bedrock model ID for Claude Opus 4.6. I will open a draft PR shortly.

[roomote]

Opened a draft PR with my attempt at addressing this: #11232

The fix removes the :0 suffix from the Claude Opus 4.6 model ID in the bedrock.ts file to match the correct AWS Bedrock model identifier. Feedback welcome!

[hannesrudolph]

@cogwirrel can you touch base with me on slack plz? hannes@roocode.com