StepFun releases Step 5 Preview, a 600B MoE model with 1M context

Reddit users say Minimax h3 video generation (fl2va/r2va modes) delivers good prompt adherence on initial outputs but hallucinates badly when changing seeds for variations.

A r/StableDiffusion post recommends drawing your own composition and letting Minimax handle it rather than pulling references from the internet. The poster notes the model struggles when replacing people in physically awkward placements, such as hair tied in a bun behind the head.

Nightly build v0.25.1-nightly.20261011.01d3e6d81a adds managed-agent connector and broker robustness fixes plus mailbox handling over Session messages. Changes landed via PRs #13330 and #13892.

Multi-Agent Self-Supervision (MASS) uses one shared model as executor, workflow optimizer, and evaluator, then distills the self-judged best team's executions back into the model as a self-supervision signal. It improves score per output token over the base model on research benchmarks.

Shubhankar Srivastava's AutoBrowse pairs a doer that operates the browser with a teacher that reads screenshots, letting browser agents learn a task without changing model weights. The talk uses an agent that succeeds at a flight search then fails on its next iteration to illustrate the uneven progress.

A solo developer recreated Microsoft Office's Word, Excel and PowerPoint as free open-source apps built with Claude, and claims he earns 4x more per employee than Google. Autodesk tools and other subscription-based services may be next.

Modular chief scientist Abdul Dakkak argues today's AI software stack is a mess, with vLLM, SGLang, TensorRT-LLM and llama.cpp each patching around different hardware. Compute is booked out for years while new chips keep arriving, making portable software the bottleneck.