Fable 5.2 早期体验：更快、更省、阻断更少
一名获得 Fable 5.2 早期访问权限的 Reddit 用户称，该模型输出更快、阻断更少且 API 价格更低，但没有进行正式基准测试，只分享了个人观察。该用户援引 Anthropic 的说法称，输出速度最高比 Fable 5.1 快 30%，中等努力程度处理困难任务时使用的令牌更少，快速模式最高可达 2.5 倍；其实际体感与 30% 的说法大致相符。用户还称该模型 API 定价为每百万输入令牌 8 美元、输出令牌 40 美元，并能仅凭截图诊断出网页显示问题。
这份报告提供了 Fable 5.2 在速度、令牌用量、使用限制、价格和视觉能力方面的早期实用观察，但由于未做基准测试且包含尚未独立验证的厂商说法，结论仍需谨慎看待。
I got early accees so and ran the same things I run on every new model. Skipping the benchmarks. This is what I noticed and what's worth your time.
What's different
Speed. First thing I noticed. Anthropic say output is up to 30% faster than 5.1 and that matches how it felt. There's also a fast mode in Claude Code and the API that goes up to 2.5x. Check what it costs before you leave it on.
Usage. I stayed on medium effort all evening and never felt I needed high. Anthropic say it uses fewer tokens than 5.1 on hard tasks at medium, so start there.
Blocks. Around 55% fewer than 5.1. I don't do bio or security work so I can't test this one. If you kept getting bumped to Opus, rerun the exact prompt that got blocked and tell us.
Price. API is $8 in / $40 out per million tokens, down from $10 / $50. Model string is claude-fable-5-2.