Three levers — system prompt, tool descriptions, middleware — push the Deep Agents suite from a typical ~0.80 to 0.84, topping out at 0.86 against Opus's 0.87.
Former OpenAI safety lead surveys nearly 30 papers: from prompt tweaks to self-modifying code, DGM pushed coding ability from 20% to 50%.
Ranks 3rd on DeepSWE, 4th overall — faster than Opus 4.8 and notably cheaper.
The first truly full-duplex voice model launches today, and it can hand off complex tasks to GPT-5.5 in real time.
Adds click-and-circle point editing plus native rendering for a dozen-plus languages; now live on Volcano Engine, rolling out to Doubao and Jimeng next
Paper shows a 10.8% gain in personalization and 29.4% in reasoning, fully open-source under Apache 2.0
In advisor mode Fable 5 just gives advice; in orchestrator mode it delegates tasks — either way, the cheaper Sonnet 5 ends up doing most of the work
By fine-tuning only the single token where the doom loop begins, both models' loop rates drop to around 1%
Sibling model Muse Video also debuts with native audio support built in, creator access coming soon.
Expanding from charging only AI crawlers to charging any caller, now in early access waitlist
Before calling a tool, the model now says "let me check that" — so calls never go cold waiting
50 autonomous agents worked in parallel across 27 provincial departments and 3,400 code repositories — even fixing vulnerabilities and rewriting legacy systems on their own.
One line of Wrangler config plus standard HTTP cache headers — and caching can now sit between any two points inside a Worker.
16 insiders recount the journey from wrestling with diffs to a two-week sprint launch — and how engineers stopped writing code by hand
Claude Code team's Thariq Shihipar at a conference talk: the bottleneck for new models is no longer the model itself, but whether you can articulate your own unknowns
It makes up less than 10% of the model — remove it and Claude can still talk, but its reasoning collapses to zero. Anthropic is already using it to catch fabricated data and spot when Claude senses it's being tested.
In a 151-student trial, short-answer questions moved scores more than multiple choice, while almost no one touched the AI help sidebar
No funding, no team — built purely to solve his own kid's problem. Clinics and schools started asking to use it anyway.
One email a night with that day's new explainers. Unsubscribe anytime.