Teaching Claude why
…Claude’s character is so that fine-tuning on a subset of those characteristics elicits the entire character (similar to the effect observed in the auditing game paper ); It updates the model…
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What’s next?
Users will find Opus 4.8 to be a modest but tangible improvement on its predecessor. There’s still more to be done: we’re working on developing and releasing models that provide many of the same capabilities as Opus at a lower cost. Not only that, but we plan to release a new class of model with even higher intelligence than Opus. As part of Project Glasswing, a small number of organizations are currently using Claude Mythos Preview for cybersecurity work. Models of this capability level require stronger cyber safeguards before they can be generally released. We’re making swift progress on dev
Introducing Claude Opus 4.8Videos
More videosTop stories
SpaceX purchases Cursor, a Claude Code and OpenAI Codex competitor [U] - 9to5Mac
1d agoAnthropic pulls Claude Mythos 5 and Claude Fable 5 following US government directive - 9to5Mac
4d agoAnthropic releases state-of-the-art AI model Claude Fable 5, and it's safe to use
1w ago
aws.amazon.com AWS announces Claude Fable 5, the first generally available Mythos-class model - AWS
1w agoDonating our open-source alignment tool
…Petri has been part of our alignment assessment for every Claude model since Claude Sonnet 4.5. It compares how the new model behaves across a range of alignment-relevant scenarios that…
Mythos-class Claude Fable 5 arrives on GitLab Duo Agent Platform
…For developers, platform engineers, and engineering leaders, this is not an incremental model update. Claude Fable 5 completes multi-step, goal-directed work that previous models could not sustain, and it does…
4 Claude Code slash commands I use daily that make me more productive
…That usually means the model is either overkill or underpowered for the task. In the Claude app, switching the model forces you into a new session, breaking the flow; the Claude Code…
Discussions and forums
Show HN: Rayline routes Claude Code subagents to on-device and cheaper models
Hi HN,I’m one of the builders of Rayline.Rayline is a Claude Code compatible LLM gateway. It intercepts and overrides claude code’s internal routing and lets you route subagent calls to different models instead. For exam…
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Attention Is All You Need
I keep hearing that SaaS is dead. People ask why they’d pay for SaaS anymore, “Can’t I just build it myself with Claude?”On the surface, it sounds reasonable. But after a decade of building software professionally, I can…
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I spent a year building agent memory on knowledge graphs. Here are my 5 mistakes
I spent the past year building a unified memory layer for my AI agents using knowledge graphs and ontologies on top of MongoDB. I followed every trend first. I reached for the shiny frameworks and tried to design the per…
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Ask HN: Anyone else seeing serious degradation in DX with Opus 4.8?
As an anthropic fan boy(check my prev. comments), this is the first opus release where I feel like the model is just not pleasant to talk to not to mention untrustworthy.The two examples for me where I lost confidence in…
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Anthropic reveals new Opus 4.7 model with focus on advanced software engineering - 9to5Mac
…Claude Code enhancements In addition to new models, Anthropic has been iterating on Claude Code, part of the Claude Mac app, in recent weeks: Anthropic is giving Claude the ability to use…
We Got Claude to Fine-Tune an Open Source LLM
…https://github.com/huggingface/skills/blob/main/hf-llm-trainer/skills/model-trainer/SKILL.md -- I'll update the article 👍. This is so cool. Many thanks. "Really fascinating read! I found the…
Claude Mythos und Opus 4.7: Was leisten Anthropics neue Spitzenmodelle?
…Leistungsklasse wie Claude Mythos bewegen. Wie schlägt sich Opus 4.7 gegenüber den Vorgängern? Von der regulären Leistungsfähigkeit her erscheint Opus 4.7 hingegen wie ein typisches Modell-Update. Es setzt sich…
Anthropic shuts down Claude Fable 5 to comply with US government directive
…On Tuesday, June 9th, Anthropic released Claude Fable 5, an updated version of its Mythos AI model with new safeguards related to biology, chemistry, and cybersecurity. This model, created through a collaboration…
Anthropic Archives - 9to5Mac
…Expand Expanding Close Anthropic launches Claude Design following Opus 4.7 model upgrade Zac Hall Apr 17 2026 - 8:20 am PT After two previous design-related updates this week, Anthropic is…
Microsoft legal is evaluating Anthropic's Claude Fable over how it saves prompts and output
…Stay Updated Follow TweakTown for breaking tech news, reviews, and daily updates. Similar News Stories Anthropic's latest AI model Claude Fable just built Minecraft for less than $50 Microsoft confirms existence…