[BUG] API error on Opus 4.1 and Opus 4 models

Resolved 💬 9 comments Opened Aug 5, 2025 by SauersML Closed Jan 6, 2026

Environment

  • Platform
  • [AWS Bedrock
  • Claude CLI version: 1.0.69 (Claude Code)
  • Operating System: aarch64 Fedora
  • Terminal: Ghostty

Bug Description

/model anthropic.claude-opus-4-1-20250805-v1:0

⎿  Set model to
anthropic.claude-opus-4-1-20250805-v1:0

go

⎿ API Error
(anthropic.claude-opus-4-1-20250805-v1:0): 400
Invocation of model ID
anthropic.claude-opus-4-1-20250805-v1:0 with
on-demand throughput isn’t supported. Retry
your request with the ID or ARN of an inference
profile that contains this model.

/model anthropic.claude-opus-4-20250514-v1:0

⎿ Set model to
anthropic.claude-opus-4-20250514-v1:0

go

⎿ API Error
(anthropic.claude-opus-4-20250514-v1:0): 400
Invocation of model ID
anthropic.claude-opus-4-20250514-v1:0 with
on-demand throughput isn’t supported. Retry
your request with the ID or ARN of an inference
profile that contains this model.

Steps to Reproduce

Use AWS Bedrock on the newest Claude Code version and switch to Opus (``/model opus`` or similar).

Expected Behavior

A normal response.

Actual Behavior

Invocation of model ID issue.

Additional Context

This does not happen with Sonnet (us.anthropic.claude-sonnet-4-20250514-v1:0).

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