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Claude Opus 5.5: What the System Card Reveals

Should you upgrade to Claude Opus 5.5? We go through the 200+ page system card, including sandbox escape attempts and prompt injection, plus pricing and benchmarks.

Claude Opus 5.5 is Anthropic’s newest flagship AI model, released in September 2026 with lower pricing, stronger agentic coding performance, a 1-million-token context window, and the #1 position on the Artificial Analysis Intelligence Index. In this episode, we break down Claude Opus 5.5 pricing, benchmarks, real-world use cases, breaking API changes, and the most important findings from Anthropic’s 200+ page system card —…

The skinny

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