Replit is no longer working with Anthropic, CEO says

SITUATION DETECTED: 58% of Anthropic staff expect Claude to be able to make a Nobel prize level scientific discovery by 2027.

High-engagement X post with 407 visible interactions on frontier model behavior.

We keep improving performance across Claude, and you may have noticed it starts responding sooner! Claude Code now gzips the conversation it sends on every turn, so it reaches the model faster. Cloud sessions also start up as soon as you start typing.

High-engagement X post with 891 visible interactions on AI developer tooling.

Cloud agents can now build interactive canvases. Ask for a dashboard or report while the agent works, then share the finished canvas with your team as a link.

Official or high-signal @cursor_ai post with 219 visible interactions on AI signal.

We just open-sourced another pair of state-of-the-art Decision Models: pplx-decider-flash-v1.2: 4B params, 1 cent per million tokens (top 4B model on HF Decision Index) pplx-decider-v1.2: 27B params, 2 cents per million tokens (#2 on HF Decision Index...

High-engagement X post with 310 visible interactions on AI developer tooling.

SITUATION DETECTED: Claude now writes about 90% of Claude Code’s code. From June to September, merged PRs more than doubled while the share of reverted PRs fell by more than 40%.

High-engagement X post with 389 visible interactions on AI developer tooling.

The paper on how a team of Gemini 4 agents beat Minecraft is worth a look. It is accessible example (partially because it is AI written) of spontaneous coordination among agents to accomplish a complicated goal & how their approach differs from humans/

High-engagement X post with 247 visible interactions on frontier model behavior.

Claude writes about 90% of Claude Code's code. From June to September, merged PRs more than doubled while the share reverted fell by more than 40%. We wrote about how we changed code review to get there, and how to adopt it:

High-engagement X post with 2,895 visible interactions on AI developer tooling.

New from our STEM Fellows Program: Designing more efficient quantum circuits with Claude. Given plain-language instructions, Claude Mythos 5 designed quantum circuits that improve on the best published ones, sometimes by an order of magnitude or more. More efficient circuits reduce the resources needed by quantum algorithms, which could bring quantum computing applications in chemistry and materials science within reach sooner. Read more: https://t.co/QCvoJLDmBo

This week, we launched Indra, a 1M parameter OCR model that's 15x faster than Tesseract on CPU and much more accurate. I still can't believe how good this model is.

High-engagement X post with 549 visible interactions on frontier model behavior.

Hermes Agent is a launch partner for @NVIDIA's RTX Spark across the new generation of laptops. Pick it in the built-in @Windows agent setup flow, run the new generative onboarding, and get straight to work locally or in the cloud. Linus is impressed!

Official or high-signal @nousresearch post with 292 visible interactions on AI compute and inference.

SITUATION DETECTED: AI agents under evaluation have gained access to personal, business, and confidential information from multiple organizations in India. The incidents went undetected, and have been discovered through voluntary disclosures from unnamed...

High-engagement X post with 406 visible interactions on frontier model behavior.

Banger paper from Google DeepMind on long-horizon multi-agent coding. (bookmark it) They report that, to the best of their knowledge, this is the first end-to-end autonomous completion of Minecraft by AI agents. They report that four Gemini 4 Argon agents...

High-engagement X post with 259 visible interactions on frontier model behavior.

Welcome Beam! Congrats to @ReflectionAI on launching their first open-weight model. The 501B MoE model was trained on NVIDIA GB300 NVL72 and delivers over 70K tokens/sec/GPU on Blackwell Ultra out of the box on day 0. 🤗 Beam 1.0 NVFP4 checkpoint on @huggingface: https://t.co/KIKYiobZmL

China will restrict frontier model export Open source is one way to get exempted

High-engagement X post with 161 visible interactions on frontier model behavior.

Reflection’s first model, Beam, scores 30 on the Artificial Analysis Intelligence Index, placing it #2 among US open weights models Beam is an open weights model with 501B total and 23B active parameters, released on @Hugging Face Congratulations to...

High-engagement X post with 297 visible interactions on frontier model behavior.

RT @reflection_ai: Beam is now available across platforms, with open weights under the Apache 2.0 license - in collaboration with an ecosys…

If Chinese players want to open source models above 2T parameters or trained on over 10e26 FLOPS then they will need to get permission from MOFCOM

High-engagement X post with 324 visible interactions on frontier model behavior.

Turns out le Chonk is into rocket science. Mistral Large 4 scoring well in engineering and astronomy on Ulam’s private benchmark, STEMBench: ulam.ai/stembench

Official or high-signal @mistralai post with 222 visible interactions on frontier model behavior.

🚀 Hy Memory 2.0 is out — open-source model, framework, and MemHub. Your private memory steward. Framework handles chat, work & code memories. #1 open-source on 4 benchmarks. Hy-Memory-30B-A3B beats Opus 5 across major frameworks. MemHub (CLI + Mac) syncs...

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Gemini 4 Argon in now available for Pro subscribers.

High-engagement X post with 279 visible interactions on frontier model behavior.