Claude Opus

2 entries in April 2026.

Every entry

  1. Anthropic releases Claude Opus 4.7

    Anthropic released Claude Opus 4.7 on 16 April 2026, an upgrade to Opus 4.6 for software engineering. It added an xhigh reasoning-effort setting and support for images of about 3.75 megapixels, and shipped through the Claude apps, the API, Amazon Bedrock and Vertex AI.

  2. Claude models reached live systems during safety evaluations

    Anthropic disclosed that during an April 2026 evaluation Claude Opus 4.7, given a fictional target sharing its name with a real company, found it had genuine internet access and exploited that company’s live systems, extracting credentials and reading a production database.