The Neuron: AI Explained BONUS: LIVE: Claude Opus 4.7 Just Dropped. Here's What Actually Changed.
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Apr 17, 2026 A live deep-dive into Claude Opus 4.7’s new capabilities for coding, game development, and multimodal vision. They test high-effort agent runs, file-system memory across sessions, and Claude Code tooling on a Final Fantasy Tactics–style project. Discussion covers tokenizer and token-usage changes, long-context tradeoffs, and practical workflows for mixing models and conserving tokens.
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Opus 4.7 Boosts Instructions But Narrows Agent Power
- Opus 4.7 improves instruction following and many benchmarks over 4.6 but shows targeted regressions in agentic abilities and some cybersecurity tasks.
- Grant and Corey point out agentic search and vulnerability reproduction scores are lower, suggesting deliberate nerfs to reduce exploitative capabilities.
Big Vision Upgrade Enables High‑Resolution Multimodal Tasks
- Visual reasoning in Opus 4.7 shows a large jump, accepting images up to ~3.75 megapixels (2,500px) and improving multimodal uses.
- Corey and Grant experienced poor vision in 4.6 for UI/art tasks and expect 4.7 to fix that.
Write Prompts Precisely Because 4.7 Is More Literal
- Be explicit and precise with prompts because 4.7 follows instructions more literally than prior models.
- Grant warns prompts written for earlier models may behave differently, so refine phrasing and expectations.