Wire flash
TechFable 5.1 staged on Amazon Bedrock API, slug now returns 404 error
Editorial responsibility
- No named human review is recorded for this page.
- Source reporting is collected, normalized, translated or condensed automatically when needed.
- Automatically published source-backed update
A post on X reports that the AI model Fable 5.1 has been staged on the Amazon Bedrock API. The post notes that the model's API slug now returns a 404 'Model not found' error, a change from the previous 400 'The provided model identifier is invalid' error that was returned for invalid slugs like 'us.anthropic.banana'. The author states that this pattern typically occurs in the days before a model's official release, suggesting that Fable 5.1 may be launched soon. The post compares this behavior to that of Opus 5.1, which underwent a similar staging process. This development indicates that Anthropic is preparing to deploy Fable 5.1 on the Amazon Bedrock platform, a major cloud-based AI service.
Source report
Fable 5.1 has been staged on the Amazon Bedrock API. The slug now returns a 404 "Model not found" error, replacing the previous 400 "The provided model identifier is invalid" response.
This change is notable because it differs from the behavior of:
- Opus 5.1
- Invalid slugs such as
"us.anthropic.banana"
Both of these continue to return the 400 error.
This pattern typically occurs in the days leading up to a model release.
Source
synthwaveddNeutral / independent
Part of this Story
Anthropic stages Fable 5.1 AI model on Amazon Bedrock API, signaling imminent release