Claude Opus 4.7: The Good, The Weird, and The Why Your Prompts Just Broke

Claude Opus 4.7: What Actually Matters for Developers Anthropic dropped Claude Opus 4.7 and—plot twist—they admitted it's not their best work. The real beast, Claude Mythos, is locked behind a waitlist because it's "too capable at cybersecurity." Everyone else gets the "safe" version. Here's what actually matters for developers. SWE-bench Pro: 64.3% — Up from 53.4%. The gap between 4.6 and 4.7 is bigger than the gap between 4.6 and GPT-5.4 combined. Vision: 2,576px — Triple the resolution...