New on the radar: Fable 5.2 appeared in models.dev (amazon-bedrock)

Our hourly sweep found an id that was not there an hour ago.

Catalog id: amazon-bedrock/us.anthropic.claude-fable-5-2
Listed price: $8.8/$44 per 1M
Context window: 1,000,000 tokens
First observed by our sweep: 2026-11-09 20:27 UTC
Source: models.dev (amazon-bedrock)

This entry is machine-written from what the sweep actually read, and nothing else. A catalog listing is a primary source for exactly one narrow fact — that this id now exists, at this price, with this context window — and it is not evidence of anything beyond that. It does not tell you the model is good, that the listing is intentional, that the weights are open, or that the vendor has announced it. Those questions need a human and an editor's judgement, and this item deliberately does not answer them.

It maps to Fable 5.2, already on our watchlist — registry note: live — Nov 9 · Anthropic's upgrade of Fable; Mythos 5.2 is the same underlying model without certain cyber and biology safeguards · claude-fable-5-2 on the Claude API, AWS, Google Cloud and Microsoft Azure · $8 / $40 per 1M (Fable 5.1 was $10 / $50); optional fast mode, up to 2.5x faster, $16 / $80 · 1M ctx, 128K max output, adaptive thinking always on, default effort high on the API and medium in Claude apps, reliable knowledge cutoff Jun 2026 (Anthropic's models overview) · Anthropic's own figures: output up to 30% faster than Fable 5.1; FrontierCode 2.0 45.3% at High (Opus 5.5 best 45.5%) for about half the cost per task, 49.1% at Xhigh; BenchCAD 2.1 83.5 (Opus 5.5 65.3); RoboDojo Sim 64.9% (GPT-6 Astra 29.8%) · Artificial Analysis Intelligence Index (read Nov 9 19:55 UTC): Fable 5.2 (Max) 65, ranked first · launch week: eligible paid plans get 1-3 Fable resets, and Pro and standard Team seats can spend up to 50% of weekly usage on Fable · AWS's public price list carried it from 18:09:52 UTC; our sweep first saw claude-fable-5-2 at 18:52:10 UTC and fired at 18:53:06, 4 min 53 s before @claudeai's post.