Models Lead story
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.
Model releases reset developer expectations, competitive pressure, and the capabilities builders can immediately put into products.
anthropic.com 2 sources signal 78 primary Hot
Mixture-of-Experts (MoE) models have enabled state-of-the-art LLMs to be scaled to hundreds of billions of parameters, but they come with a fundamental and costly caveat: every expert MLP must occupy memory at inference time, even though the vast majority...
Chips huggingface.co signal 84 primary Hot
The leather-jacketed CEO of Nvidia, Jensen Huang, has acknowledged an affair with Megaspeed exec Alice Huang, spurring an investigation by his company and intense discussions worldwide.
Chips theverge.com signal 76 verified
Nvidia’s stock slid more than 4% after its board opened an investigation into Jensen Huang’s relationship with a suspected Chinese spy, and one securities law expert says the company’s earlier insistence that it was all “normal” could turn into a very expensive problem.
Models techcrunch.com signal 76 verified
The Nvidia CEO also pulled out of an Anthropic event earlier.
Models techcrunch.com signal 76 verified
Jensen Huang’s alleged affair with a suspected Chinese spy threatens to complicate Nvidia’s lobbying efforts to loosen U.S. chip export restrictions and maintain access to China’s lucrative AI market.
Models techcrunch.com signal 76 verified
"Grok analyzing the same video is 99.9 percent perfect."
Startups arstechnica.com signal 75 verified
Looks like Fable 5.2 is above the already steep trendline on three of the most informative unsaturated benchmarks (ECI is a composite of other benchmarks, Remote Labor measures the ability to do end-to-end freelance jobs, RoboDojo involves controlling...
High-engagement X post with 251 visible interactions on robotics progress.
@alexandr_wangSurrrprisee!! crouton-alpha 🥐 was an early version of muse ember 🔥 we fixed a bunch of the issues before launch—thanks for all the testing! we processed over 5T tokens in testing—excited to see where you all take this model next!
High-engagement X post with 469 visible interactions on frontier model behavior.
@dylan522pFable 5.2 is significantly better at chip design, software engineering, biology, and material science. GDPx is the only eval that test these categories at this level of detail. True experts make these tasks, unlike other benchmarks. Notably it is not...
High-engagement X post with 192 visible interactions on frontier model behavior.
@jarredsumnerUpdate: improvements to WebAssembly compilation in Bun AoT make OpenCode use 13% less CPU than this morning
High-engagement X post with 114 visible interactions on AI developer tooling.
@artificialanlysClaude Fable 5.2 is now #1 on AA-3D, our benchmark for how well AI models build interactive 3D experiences Claude Fable 5.2 (Max) scores 1271 Elo, 67 points ahead of Claude Sonnet 5.5 (1204) and Claude Opus 5.5 (1202). Its 95% confidence interval (1246 to...
High-engagement X post with 316 visible interactions on frontier model behavior.
@dwarkesh_spAt Blood on the Clocktower, Fable 5.2 is still worse than GPT-6 Astra. Though much better than Opus 5.5 or Fable 5.1
High-engagement X post with 477 visible interactions on frontier model behavior.
@arenaBig news: Claude Fable 5.2 (xHigh) by @AnthropicAI has landed #1 in the Code Arena: WebDev with 1832 pts. This update is up to 30% faster than Fable 5.1, and more cost efficient: $8/$40 per M tokens, down from $10/$50. This real-world performance puts it...
High-engagement X post with 147 visible interactions on frontier model behavior.
@ivanfioravantiFable 5.2 using herdr skills to plan coordinate activities of 4 pi agents using DeepSeek v4.1 Flash for coding (4 panes on the right) and one Claud Code Opus 5.5 to review the PRs. Look at how fast 4 parallel DS41 sessions are on 4xDGX Sparks using...
High-engagement X post with 115 visible interactions on frontier model behavior.
@tekniumNew Fable 5.2 available in Hermes Agent through Nous Portal, OpenRouter, and Claude subs available 😉
Official or high-signal @teknium post with 154 visible interactions on frontier model behavior.
OpenAIWe built Control Room, a central system to track model workloads across our research infrastructure and stop them quickly when safety or security concerns arise. It connects every research inference workload, including agentic sampling for model training and evaluation, data processing, and more. This works together with our misalignment monitoring systems, and halts model output within 35 seconds of a decision to intervene to stop or pause a job. Control Room is just one part of our holistic approach for safe frontier model training and deployment. https://t.co/tc0lBqFdS5
@charliermarshI had Codex build a CPython bytecode compiler in Rust (`serc`). It emits byte-for-byte identical output on the top 10,000 PyPI packages, 2-4x faster than the CPython implementation. This was entirely an experiment, though we may ship it (opt-in) in uv.
High-engagement X post with 443 visible interactions on AI developer tooling.
claudeaiClaude Fable 5.2 is available today on all paid plans. Organizations pursuing beneficial applications in cybersecurity or biomedical research can apply for access to Claude Mythos 5.2. Read more: https://t.co/50jMVOmUG7
_samirismBtw - we've rollout out the ability to connect multiple computers to your dot 💻💻 all part of a bunch of improvements for how dots interact with desktop Codex that we are working on. try it out
High-engagement X post with 251 visible interactions on AI developer tooling.
arenaClaude Fable 5.2 by @AnthropicAI is now in the Arena. Head to Agent Arena to test it out, scores coming soon! In Agent Arena, we measure models on millions of real-world, long-horizon agentic tasks from a global community of users. Models can access web...
High-engagement X post with 151 visible interactions on frontier model behavior.
@artificialanlysAnthropic has released Claude Fable 5.2, taking the #1 spot on the Artificial Analysis Intelligence Index v5 at 65, led by gains in science, knowledge, and coding At max effort it scores 65, 5 points ahead of Gemini 4 Carbon (high, 60) and 6 ahead of...
High-engagement X post with 156 visible interactions on frontier model behavior.
@claudedevsTo help prevent distillation, preserved thinking now covers all API accounts on Fable 5.2. Editing prior context can 400. Use compaction, context editing, or mid-conversation system messages. Claude Code, Managed Agents & Agent SDK handle this for you.
High-engagement X post with 151 visible interactions on AI developer tooling.
@claudedevsFast mode is also available for Fable 5.2. 2.5x faster output, for twice the price. In the Claude API, set "speed": "fast". In Claude Code, toggle fast mode in the model picker, which will bill through extra usage credits.
High-engagement X post with 274 visible interactions on AI developer tooling.
@claudedevsFable 5.2 is now available in the Claude Platform and Claude Code. It’s up to 30% faster than Fable 5.1, and costs $8/$40 per 1M tokens, down from $10/$50.
High-engagement X post with 4,523 visible interactions on AI developer tooling.
claudeaiClaude Fable 5.2 is available today on all paid plans, on the Claude Platform, and on all major cloud platforms. It’s $8 per million input tokens and $40 per million output tokens, down from $10 and $50. Read more: https://t.co/50jMVOnsvF
claudeaiIntroducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges. They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision. https://t.co/jP0AutLxXb
@alexandr_wangToday we released our smallest model yet: Muse Ember 🔥 Muse Ember offers nearly Muse Spark 1.3 (max) intelligence at a 17x cheaper price point (per AA) Muse Ember is the first model we’ve released trained using Muse Wonder Full excited for y’all to try on...
High-engagement X post with 589 visible interactions on AI developer tooling.
AIatMetaFor agents that perform hundreds of small tasks, efficiency matters at every step. Muse Ember is built to deliver more intelligence for the cost. On the @ArtificialAnlys Intelligence Index, it achieves performance comparable to Claude Haiku 5.5 at roughly one-third of the cost per task, while scoring higher than GPT-6 Luna across all of Luna's reasoning settings.
AIatMetaToday we're introducing Muse Ember, our smallest and most efficient model, built for complex reasoning execution and everyday agent work. Muse Ember can carry workflows across apps, call tools in sequence, run tests and make targeted code fixes. With a 1M-token context window and native understanding of text, images, audio and video, it can also work across large document sets and varied inputs.
@googleaistudioYou can now build with google maps platform in AI Studio 🗺️📍 go from idea to app powered by @googlemaps in minutes! what’s new: - 1-click setup - create maps apps just by describing your idea, Gemini does the rest - build with map tiles, places, weather,...
High-engagement X post with 795 visible interactions on frontier model behavior.
Dev tool Hermes Agent
Fable 5.2 is available in Hermes Agent through Nous Portal, OpenRouter, and Claude subscriptions.
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Policy Claude Fable
Preserved thinking covers all API accounts on Fable 5.2 to prevent distillation, returning 400 errors if editing prior context.
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Quota reset Claude Code
@claudedevs: Fast mode is also available for Fable 5.2. 2.5x faster output, for twice the price. In the Claude API, set "speed": "fast". In Claude Code, toggle fast mode in the model picker, which will bill through extra usage credits.
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Model release Claude Fable
@claudedevs: Fable 5.2 is now available in the Claude Platform and Claude Code. It’s up to 30% faster than Fable 5.1, and costs $8/$40 per 1M tokens, down from $10/$50.
observed applies now
Model release Muse Ember
Alexandr Wang announced the release of Muse Ember, described as their smallest model yet, trained using Muse Wonder with near Muse Spark 1.3 intelligence.
observed applies today
Hot Artificial Analysis
Artificial Analysis released the second version of its Decision Index, featuring a proprietary evaluation, updated benchmarks, and a headline metric rewarding model calibration.
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Organizations are scaling computing capacity through specialized accelerators, high-density cooling systems, power plant investments, and optical interconnects to support data center workloads.
Frontier model releases +5.3Providers are introducing new model variants targeting technical benchmarks and lightweight agent execution, while adjusting pricing tiers for API access.
AI policy and governance +0.9Government authorities are preparing dedicated safety regulatory bodies and establishing mandatory incident reporting frameworks following investigations into artificial intelligence system breaches.
Robotics and embodied AI -0.3Industrial humanoid robotics development is advancing across commercial supply chains, including specialized battery sourcing and new platform deployments for manufacturing and logistics.
Capital and consolidation -1.9Technology firms are pursuing initial public offerings, strategic corporate partnerships, and multi-billion-dollar semiconductor material acquisitions to align capital with evolving sector demands.
AI-linked equities are broadly positive, with Advanced Micro Devices +13.3%, Broadcom. +8.78%, Arm Holdings plc +6.69% leading the tracked basket.
| Ticker | Company | Move |
|---|---|---|
| AMD | Advanced Micro Devices | +13.3% |
| AVGO | Broadcom. | +8.78% |
| ARM | Arm Holdings plc | +6.69% |
| PLTR | Palantir Technologies. | +5.50% |