Claude Fable 5.2 and Mythos 5.2
Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges. Fable 5.2 sets a new bar in coding, finance, and the sciences.
anthropic.com · 987 points · 7 comments · 1d ago
Lead story
All news →- Claude Fable 5.2 and Mythos 5.2anthropic.com · 866 points · 1d ago
- Google Gemini routes personal Drive files and emails to human annotatorsgithub.com · 708 points · 1d ago
- Claude Fable 5.2 scores 65 on Artificial Analysis, highest so farartificialanalysis.ai · 370 points · 1d ago
- AI usage generates a fragile codebaseevanxmerz.com · 316 points · 12h ago
- Gemini 4 Carbon is now availableblog.google · 266 points · 7h ago
- CoreWeave bond yield tops 16% as AI credit stress risescnbc.com · 191 points · 19h ago
- Fireworks AI security breach impacts Notion and their customersnotion.com · 158 points · 15h ago
- DeepX claims inference up to 100B parameters at less than 5 Weetimes.com · 155 points · 1d ago
- A year after the 100% AI mandate nobody understands our codereddit.com · 146 points · 1d ago
Builders, ranked
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Products, just launched
See all →- EExa MonitorsSaved web searches that run on a schedule and send only new results to your agent's webhook.1d ago
- Ttelemetry.devObservability for AI agents: every run as one trace, with tokens, cost and errors per span.8d ago
- DDedicaCheck if AI agents can use your website: 125 free checks, with a fix for every failure.8d ago
- NNeedleThe agent-native outbound engine: find, enrich and contact leads from one prompt in Claude.15d ago
DevSpotA platform for hosting hackathons and building projects with a community of builders.22d ago
- TTidenVerify that your coding agents built what you actually asked for.23d ago
Every satellite that passed over any place this week, and its photosShow HN · 1d ago
Get your coding agent off ~2019 JavaScript, onto modern web primitivesShow HN · 5h ago
ValenciaSpain in Sim City/Isometric ViewShow HN · 8h ago
- DDBDelveOpen-Source DB Client Made with Rust and GPUIShow HN · 1d ago
MeowDisplay Is iPhone Mirroring, but in ReverseShow HN · 1d ago
Guides
See all →- Don't Write Markdown Files for Your Coding Agent. Write ScriptsRules in AGENTS.md are suggestions. A script with a pass or fail result is a constraint.
- An Agent Said It Deployed. The Containers Were a Day OldFour claims an agent makes about a deploy, and the command that proves each one.
- Jev + Opus: Frontier-Accuracy LLM Judging at 4x Lower CostHightouch's test: a Jev plus Opus hybrid judge matched frontier accuracy at over 4x lower cost.
- Agent Skills Drift: A Feedback Loop for Keeping One TrueAgent skills go stale in six ways while their checks stay green. A step-by-step loop to catch it.
- Four Ways a Test Can Lie to YouWhat 530 agent-written tests taught one developer: checks can be green, or red, and mean nothing.
- Headless Content Marketing: A New (Old) Strategy for SearchAhrefs on pages written mainly for AI answers, why big brands are making them, and what it means.
- How to Publish Posts via the dev.to APIPublish to dev.to from a curl command or a Python script, front matter and images included.
- Persistent Agent Teams With Herdr, Claude Code and PiRecreate always-on agent teams on your own VM: named peers that remember the project and talk.
- Building Better Agents Through End-to-End EvalsHow Ramp Stack grades a bookkeeping agent: messy synthetic worlds, rubrics and skill ablation.
- Can a Local LLM Replace Claude Code? The Benchmark Everyone Quotes Is the Wrong OneWhy SWE-bench misleads, and what actually breaks when a local model drives your coding agent.
- The September Cut Took 17% of My Claude Code Week. Subagents Took 48%455 sessions of logs show where a Claude Code week actually goes, and which saving tips work.
- Evidence-Driven Development: Give Your Coding Agent Something to ProveWrite a claim that can lose, break the app on purpose, and keep evidence your agent can't fake.
GitHub, worth a star
See all →- Context Attachment ManagerStop your agent re-sending every earlier image with each message in long, image-heavy chats.
- KanzoA kanban board and MCP server in one 4.7 MB binary, shared by you and your coding agents.
- OntoSmithBuild a knowledge graph from your documents where every written fact traces to its evidence.
- TracelyCI for AI agents: failed production runs become regression tests that block the PR.
- GrandetCompare listed API prices for any model, then let your agent connect the cheapest one.
- muA coding agent that hands its yes/no calls to a small, fast judge model at 40 decision points.
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