21h ago · 9 min read · A system card is the document Anthropic publishes with every major Claude release, detailing capabilities and safety evaluations. The Claude Opus 4.7 edition, published April 16, 2026, runs 232 pages. I read all of it. One number from deep inside: Op...
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21h ago · 8 min read · Adaptive thinking is Claude Opus 4.7's only supported reasoning mode: you pass thinking: {type: "adaptive"} and the model decides how much to reason, with budget_tokens removed from the API entirely. My production trading bot threw 400 Bad Request on...
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