Claude Fable 5.2 登顶 Agent Arena，净提升 +30.4%
Big news: Claude Fable 5.2 (Max) by @AnthropicAI takes #1 in Agent Arena with an unprecedented lead: +30.4% net improvement, about 1.6x the #2 model Opus-5.5, a
Arena 的 Agent Arena 榜单显示，Anthropic 的 Claude Fable 5.2（Max）以 +30.4% 净提升位列第一，约为第二名 Opus 5.5（+19.5%）的 1.6 倍，数据来自 4.7k 次真实智能体会话。相比 Fable 5.1，其排名从第 5 升至第 1，单任务中位成本从 $7.7 降至 $7.3，API 价格从每百万 token $10/$50 降至 $8/$40。该模型在 Code、Work、Chat 三个类别均列第一，对应 +34%、+31%、+27%。
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精选AI 评分 78
榜单给出了 Fable 5.2 与 5.1、Opus 5.5 等模型在净提升和单任务成本上的对照，可据此判断性价比变化。
主题
查看原帖隆重推出 Claude Fable 5.2 和 Claude Mythos 5.2，专为攻克最艰巨的技术挑战而设计。 它们是众多领域中雄心勃勃项目的得力协作伙伴，并在编程、推理和视觉等方面展现出提升。https://t.co/jP0AutLxXb
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Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges. They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision. https://t.co/jP0AutLxXb
正文
Big news: Claude Fable 5.2 (Max) by @AnthropicAI takes #1 in Agent Arena with an unprecedented lead: +30.4% net improvement, about 1.6x the #2 model Opus-5.5, across 4.7k real-world agentic sessions from our global community. It's also #1 in Code, Chat and Work.
A major leap over Claude Fable 5.1 (Max) - Rank: #5 → #1, Net improvement: +14.8% → +30.4% - Median cost per task: $7.7 → $7.3 (6% lower). The API pricing $10/$50 → $8/$40 per million input/output tokens (20% lower)
vs. The Frontiers - #1 Claude Fable 5.1 (Max): +30.4% | $7.3/task - #2 Claude Opus 5.5 (Max):+19.5%) | $5.5/task - #3 Gemini 4 Carbon (High):+17.0%) | $1.5/task - #6 GPT-6-Astra (Max): +14.5% | $6.0/task
Breaking down performance across signals: Fable 5.2 improves over 5.1 across all four reported signals, with particularly large gains in user satisfaction and steerability. - #1 Praise vs. Complaint , +73%, biggest jump vs +41% the next model. - #1 Steerability: +33% - #1 Confirmed Success: +22% - #3 Bash Reliability: +14%
#1 across all major categories - #1 Code: +34% - #1 Work: +31% - #1 Chat: +27% - Versus Fable 5.1: Code #6 → #1 (+19.8 %), Work #4 → #1 (+15.8 %), Chat #6 → #1 (+12.0%).
Huge congrats to the @AnthropicAI team on this incredible release!