CLAUDE 5
3 items
3 posts
Blog
Anthropic Removed 80% of Claude Code's System Prompt. Here Is What They Learned.Anthropic cut 80% of Claude Code's system prompt for Opus 5 and Fable 5 with zero regression on coding evals. The post landed on HN with 197 points and 133 comments. Here is what the article says, what HN thinks, and what it means for your agent harness.
Blog
The New Rules of Context Engineering for Claude 5 Models: A Developer GuideAnthropic removed over 80% of Claude Code's system prompt for Claude 5 models. Here is how the rules changed and what it means for your CLAUDE.md files, skills, and system prompts.
Blog
GPT-5.6 vs Claude 5: What the New Tiers Mean for Choosing a Coding ModelOpenAI's GPT-5.6 Sol, Terra, and Luna tiers versus Anthropic's Claude Fable 5 and Mythos 5. Verified pricing, benchmarks, and a practical framework for picking a coding model in July 2026.
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