Experiment tracking and hyperparameter sweeps for AI researchers and engineers, by @CoreWeave. Part of CoreWeave Forge.
San Francisco
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- Following 1,275
- Followers 49,115
- Likes 12,035
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Introducing W&B Skills for coding agents!
Watch us install the skill, point it at a live fine-tuning project with thousands of traces and RL training runs, then query it all from the terminal in seconds.
Also works with @weave_wb to pull in your agent traces and spot failures.
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Weights & Biases retweeted
Big changes gonna be announced by @wandb and @CoreWeave.
🤝 forge it.
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Here we go! @CoreWeave kicks off with Fully Connected 2026!
Researchers, customers and AI devs all packged into Moscone South - With over 30 breakouts, hands on labs, Battle Bots arena tonight!
Also unveiling Forge - Combining @wandb, @marimo_io, @OpenPipeAI into one platform for AI builders!
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RT @CoreWeave: ICYMI: CoreWeave Forge is here 🎉
A production trace that never reaches the next training run is a signal you paid for and t…
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Weights & Biases retweeted
🪙 Platinum. Three reports in a row.
@SemiAnalysis_ published ClusterMAX™ 3.0 today, and CoreWeave is the only provider rated Platinum in all three editions.
The report: utm.io/us5Bv
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Weights & Biases retweeted
our SENPAI autoresearch found a nice 22% drop in training time for us via writing:
- SliceAttention kernel (we're using Transolver atm)
- BatchedMuon
4 hour saving for a full training run, 26h -> 22h, no significant change in error/quality
github.com/wandb/senpai
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AI teams are moving from prototypes to production faster than ever, but rapid development can create new blind spots.
Join us this Wednesday at 10:00 AM PT for the latest What's New Wednesdays session, and get valuable insights on vibe-coding, tracing, and deploying your agents.
Reserve your spot here: utm.io/ur8ga
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Weights & Biases retweeted
Marin's hero run is training on our @wandb, and a ten-person open lab is showing everyone how a 535B model actually gets built.
Pull up a chair to the show: wandb.ai/marin-community/mar…
Glad to see another live training run! Here's how Marin 535B-A23B is doing today: wandb.ai/marin-community/mar…
Anyone else want to share?
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Weights & Biases retweeted
Experiment tracking shouldn’t be a mess.
I explored Weights & Biases (@wandb) with a FashionMNIST Computer Vision project to track, visualize, manage, and analyze ML experiments.
Train → Track → Visualize → Compare 📊
🧵👇
#AI #MachineLearning #WandB
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I built a deterministic city simulation governed by an LLM, which won me the highest prize at CoreWeave Hacks (The Best Loop Design) with Weights & Biases as a solo entry, and they gave me a robot dog.
Fully open source: github.com/Bereket-Belachew/…
@wandb @CoreWeave @typesafeai
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Ship now, fix later. Corey Sanders says that's...mostly right.
Our SVP of Product urges teams to get something out, because production is where you learn.
Follow the rules, keep it secure, then ship. You won't learn if you don't.
Catch the full episode: utm.io/uslfb
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Moving AI agents from prototype to production faster than ever? Don't let rapid iteration hide critical runtime behavior.
Tune in to What's New Wednesdays: Vibe-code, trace, and deploy your agents to explore:
• Production agent observability workflows in W&B Weave
• Evaluating and self-improving agent loops at scale
• Real-world takeaways from CoreWeave Hacks
Register here: utm.io/ur8ga
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Weights & Biases retweeted
We built a simple security layer for agentic infrastructure.
When an attack hits, we don’t let it touch production. We capture it, spin up a sandbox with the same infra pattern, and let the agent learn there.
Same architecture. Different risk level.
The sandbox becomes a training ground: replay the attack → map the failure path → test the fix → store the lesson.
Security for agents can’t just be a wall. Agents write code, call tools, and touch APIs. The next layer has to be a simulator, a teacher, and a memory system.
Attack → sandbox → learn → stronger infra.
Would love thoughts from people building agent runtimes, evals, and AI infra:
@hackgoofer @neutralino1 @JinjingLiang @xdotli @mo_tiwari @typesafeai @wandb @agihouse_org
@ktaletsk @AhmadMustafaAn1 @infiniter3grets @mehular0ra @RebbaVenkatarao
@typesafeai, @benchflow_aiMo @AGIHouseSFAhmad @mehular0ratwo
@shvarts_eugene, @EShvartsman.
@langchain
@LangChainAI
@e2b_dev
@modal
@e2bdev
@swyx
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Weights & Biases retweeted
Thanks @CoreWeave and @wandb! I've been using @wandb since it came out something like 8 years ago. @typesafeai had such blast sponsoring the event.
Super impressed by Christian Jin - who is only 14, who had the coolest typesafe hack (piloting a rocker simulator in real-time!)
@typesafeai sponsored the @CoreWeave hacks, thanks to @wandb for organizing.
I competed and judged on this very floor many years ago - grateful to be back as a sponsor.
Our award winner is Christian Jin - who is only 14. 🤯 I have so much faith in the next generation! 🤩
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Why not make the Fly compete with you on the dart board. here you go
Compete with the fly here: flydarts-arena.vercel.app/
@marimo_io @CoreWeave @wandb
For the first time, scientists have mapped the complete brain and central nervous system of an adult male fruit fly — a key model organism in science. 🪰
Working alongside HHMI Janelia Research Campus and the scientific community, @GoogleResearch scientists and researchers used AI to combine millions of 2D images into 3D neural shapes, reconstructing a record-breaking 166,000+ neurons. This foundational map of the adult male fruit fly brain can help accelerate our understanding of the brain, and is a major milestone in neuroscience.
ALT Vibrant 3D digital reconstruction of a fruit fly brain against a white background, displaying a dense, intricate network of multicolored neural fibers and cell bodies in shades of blue, cyan, orange, and purple.
ALT A complex 3D visualization of a fruit fly brain, featuring a dense, symmetrical network of thousands of tiny, multicolored neurons and fine, interconnected fibers in shades of blue, magenta, orange, and green against a solid white background.
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Kickoff of day 1 at @CoreWeave Hacks. 200+ builders, one mission: build an agent loop that catches its own mistakes.
@agihouse_org, @typesafeai and @marimo_io are here with $1k+ in credits and tons of compute. 24 hours to submit.
One team is going home with a robot dog!
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Weights & Biases retweeted
Next up Julia showcasing @CoreWeave @wandb ARIA!
Winner for best use of ARIA gets $1,000 as well!
Check out ARIA: wandb.ai/site/agent/
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