Artificial Analysis 将 Claude Fable 5 列为有史以来基准测试成本最高的模型，运行其 Intelligence Index 需 $6.2K，是第二贵模型 Opus 4.8（$3.7K）的 1.7 倍、GPT-5.5（$2.9K）的 2.2 倍。该模型 Intelligence Index 得分 60，领先 Opus 4.8（56）和 GPT-5.5（55）。定价 $10/$50 每百万输入/输出 tokens，为 Opus 4.8 的 2 倍，仅低于 GPT-5.5 Pro（$30/$180）。缓存价格同步翻倍：缓存读取 $1/M、写入 $12.5/M，而 Opus 4.8 分别为 $0.5/$6.25。Intelligence Index 成本前三高的模型目前均为 Claude。
Claude Fable 5 cost ~$6.2K to run the Artificial Analysis Intelligence Index benchmarks - the most expensive model we have ever benchmarked 🧵
Key takeaways:
➤ Intelligence Index: 60, ahead of Claude Opus 4.8 (56) and GPT-5.5 (55)
➤ Cost to run the Intelligence Index: $6.2K, 1.7× the next-highest model (Opus 4.8, $3.7K) and 2.2× GPT-5.5 (xhigh, $2.9K)
➤ List price: $10/$50 per 1M input/output tokens, 2× Opus 4.8. Among 2026 releases, only OpenAI's special Pro tier (GPT-5.5 Pro, $30/$180) is priced higher
➤ Cache pricing, which is particularly important for long agentic coding sessions, doubled too: $1/M cache reads, and $12.50/M cache writes vs $0.50/$6.25 for Opus 4.8
➤ The top 3 most-expensive models to run the Intelligence Index are now all Claude models
来源：Artificial Analysis · x.com