llm-anthropic 0.31
TL;DR · AI 摘要
Anthropic发布新模型Fable 5.2和Mythos 5.2，前者在基准测试中排名第一，且价格较前代降低20%。
核心要点
- Fable 5.2在Artificial Analysis基准测试中排名第一
- Fable 5.2输入价格$8/million，输出$40/million（较前代降20%）
- xhigh推理级别生成pelican SVG效果最佳，max级别因token限制失败
结构提纲
按章节快速跳转。
介绍Anthropic发布的Fable 5.2和Mythos 5.2模型及其性能表现。
Fable 5.2在Artificial Analysis排名首位，并声称解决黑洞物理难题。
- ›价格调整
Fable 5.2输入输出价格较前代降低20%，分别为$8/million和$40/million。
通过生成pelican SVG图像验证模型推理能力，xhigh级别表现最佳。
- ›技术问题
max推理级别因token限制失败，与Opus 5.5存在相同缺陷。
思维导图
用一张图看清主题之间的关系。
查看大纲文本（无障碍 / 无 JS 友好）
- Anthropic新模型发布
- Fable 5.2
- 基准排名首位
- 价格$8/$40/million
- xhigh生成SVG最佳
- Mythos 5.2
- 与Fable 5.2同步发布
- 技术缺陷
- max级别token限制失败
金句 / Highlights
值得收藏与分享的关键句。
Fable 5.2在Artificial Analysis基准测试中排名第一
max推理级别消耗128,000 tokens后失败，暴露token限制缺陷
Fable 5.2价格较前代降低20%，输入$8/million，输出$40/million
Release: llm-anthropic 0.31
Simon Willison’s Weblog
Newsletter
#smallhead
Sponsored by:
doubleAI — doubleAI’s Maxwell makes software faster as it runs, no code changes needed.
Now in early access
9th November 2026
Release
llm-anthropic 0.31
— LLM access to models by Anthropic, including the Claude series
Anthropic released Fable 5.2 and Mythos 5.2 today. Fable 5.2 is currently ranked first on Artificial Analysis . Anthropic say it "solved two open problems in the physics of black holes", so clearly their internal benchmarks have become more ambitious!
I've added the new models to llm-anthropic , so you can now run prompts through Fable 5.2 like this:
uv tool install llm
llm install llm-anthropic
llm keys set anthropic
# paste key here
llm -m claude-fable-5.2 "Generate an SVG of a pelican riding a bicycle"I ran pelicans at all five reasoning levels - low , medium , high , xhigh , and max . You can see them all here - here's the best result I got, from xhigh :
max failed to return an image at all, running out of tokens after spending 128,000 thinking about them . That's the same bug that I saw with Opus 5.5 - but it's new for the Fable series, both Fable 5 and Fable 5.1 returned max effort pelicans just fine.
It's priced at $8/million input and $40/million output, which is a 20% discount on the previous Fable 5.1 ($10/$50).
I also used Fable 5.2 to help identify the source of a mysterious beep .
Posted
at 11:58 pm
Recent articles
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#primary
This is a beat by Simon Willison, posted on 9th November 2026 .
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