Claude Opus 5.5 发布并成 AINews 默认模型，多家厂商降价 40-50%
原标题：[AINews] Claude Opus 5.5, the new default model for AINews — and everybody cuts prices 40-50%
AI 摘要
Anthropic 发布 Claude Opus 5.5，作为新 Claude 5.5 家族首个模型，宣称在多数任务上达到 Fable 5.1 水平，运行成本比 Opus 5 低 40%，速度约快 30%，并改善写作与指令遵循。OpenAI 约一小时后发布 GPT-6 Sol 和 Luna，定价比 GPT-5.6 低 50%。Opus 5.5 成为 Claude Code 和 Claude 应用默认模型，API 价格下调 20%，但部分任务 token 用量增加抵消了降价效果。
正文节选
OpenAI made a valiant effort with GPT-6 Sol and Luna launching 50% lower than GPT-5.6, but with 17M views on the launch and counting, today was always going to belong to Claude Opus 5.5, “the first model in our new Claude 5.5 family” performing like “Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.” Opus 5.5 beats Fable or challenges Astra at most benchmarks, and both labs credited efficiency work for the API price cuts, but there are HUGE double digit gains everywhere fro