Anthropic Articles

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12/2/2025 • EN

Anthropic's internal 'soul document' used to train Claude 4.5 Opus's personality and values has been confirmed and partially revealed.

AI Safety Anthropic Claude llm Model Training

11/25/2025 • EN

Release of llm-anthropic 0.23 plugin adding support for Claude Opus 4.5 and its new thinking_effort option.

Anthropic Claude llm Python Library Thinking Effort

11/25/2025 • EN

Analysis of a leaked system prompt for Claude Opus 4.5, discussing its content and the challenges of evaluating new LLMs.

Anthropic Claude generative ai llm System Prompts

11/20/2025 • EN

A guide to using Anthropic's Claude models in Microsoft Foundry with Microsoft.Extensions.AI via a custom HTTP handler for API format translation.

Anthropic API Integration Claude HTTP Handler Microsoft Extensionsai

11/15/2025 • EN

Release of llm-anthropic plugin 0.22 with support for Claude's structured outputs and web search tool integration.

Anthropic Claude llm Structured Outputs Web Search

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