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← Back to all updatesPublished ·Anthropic• Minor
The Messages API is available on Amazon Bedrock as a research preview.
The read
Bedrock users get the same request shape as the first-party Claude API on AWS-managed infrastructure.
The frame
The Bedrock endpoint uses the first-party request shape and runs on AWS-managed infrastructure with zero operator access.
Primary source
Anthropic →Keep reading
See what Nova3 builds →Related updates
- Jun 12, 2026Anthropic publicly documented stop_details on refusal responses, with category and explanation fields for routing.
- Jun 12, 2026Claude Opus 4.8 defaults the effort parameter to high across all surfaces.
- Jun 12, 2026Claude Opus 4.8 lowers prompt caching’s minimum cacheable prompt length to 1,024 tokens versus Opus 4.7.
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