Anthropic Launches Claude Fable 5.2 and Mythos 5.2, 30% Faster
Anthropic has released Claude Fable 5.2 and Mythos 5.2, promising better coding, reasoning and vision, output up to 30% faster and lower prices than version 5.1.
SUMO· the number puzzle
Dialo· learn languages by speaking
ediviewer· read EDI files like documents
giftdetect· the right gift in minutesAnthropic has released Claude Fable 5.2 alongside Claude Mythos 5.2, an update aimed at improving coding, reasoning and image understanding while producing results faster and at lower cost.
According to the company, both models generate output up to 30% faster than Fable 5.1 and Mythos 5.1. Pricing is set at $8 per million input tokens and $40 per million output tokens. Early testing also showed the models communicate more clearly than their predecessors.
Fable 5.2 is the second major update to the Fable 5 tier since its debut in June, following Fable 5.1 in September. Anthropic describes the tier as the most advanced in the Claude lineup, with Haiku, Sonnet and Opus occupying other capability levels.
Who the models are for
Anthropic says Fable and Mythos target complex technical work and large, open-ended projects. For most coding and everyday knowledge tasks, it recommends starting with Claude Opus 5.5 and switching to other models depending on the task's complexity.
On coding, the company says more than 90% of the changes merged into its core codebase are now written by Claude with human assistance. It says it used Fable 5.2 to fix complex bugs within minutes, improve the performance of its services and finish large projects that would otherwise have taken longer or cost more.
One example: a group of AI agents running an earlier version of Fable 5.2 migrated an important production service from Python to Rust. The move improved its efficiency and reliability and made startup about 26 times faster.
Extra usage for subscribers
With the launch, Anthropic is offering additional Fable usage to subscribers on some paid plans this week. Eligible users can reset their Fable usage limits between one and three times, depending on how long they have subscribed. The model will also be available at up to 50% of weekly usage limits for Pro subscribers and some Team plan users.
Apps worth a look
SUMO: the number puzzleTap the right tiles, add them up, hit the target. Easy to learn, hard to master. Free, for all ages.
Dialo: learn languages by speakingTalk to an AI conversation partner; every sentence comes back corrected and explained in your language. 9 languages, A1 to C2.
ediviewer: read EDI files like documentsOpen EDIFACT and X12 messages, see every segment explained, convert to JSON/XML, export PDF and Excel. Runs locally, no upload.
giftdetect: the right gift in minutesPick who it is for, the occasion and their personality. The search engine reads product descriptions from local shops and ranks what fits. Free, no sign-up.
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