You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ModelsArea: what it touches
ImprovementsKind: in v2.1.287,
ImprovementsSection of the release
What
When Claude Code runs through Amazon Bedrock or Google Vertex AI, it tries candidate models to find an upgrade or a fallback (a model to use when the first choice is not available). It now skips any candidate flagged as unavailable and writes a log message instead of trying it.
For Opus, the fallback to Sonnet can now also consider Sonnet's own fallback models.
Why
Claude Code no longer spends checks on models that are already known to be missing.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtHow Claude Code decides that a model is unavailable is not shown.
