Analysis

Claude Opus 4.7 Is a 35% Silent Price Increase. The Migration Guide Reveals What Anthropic Actually Changed.

Everyone's celebrating Opus 4.7's capability jump. Nobody's reading the migration guide. It kills temperature, top_p, prefill, manual thinking, and raises your token bill by 1x-1.35x for the same prompts. Here's what the breaking changes actually mean.

Published April 16, 2026
16 min read