● PLATFORM
OpenAI turns the Codex harness into an open platform
Teams are wiring agents into the tools they already use instead of migrating to a general-purpose coding assistant. The open-source Codex harness owns the agent loop — context, tool calls and approvals — while the surrounding application keeps control of the interface, the tools and the operational boundaries. OpenAI's blog walks through the open components, the Codex app-server and SDK, with sample use cases from security triage to support tickets and task boards. On ARC-AGI-3, retaining reasoning and context compression lifted GPT-5.6 Sol from 13.3% to 38%.
● PRODUCT
Replit ships a free mode on GPT-5.6 Luna
Replit's Free Mode, powered by OpenAI's GPT-5.6 Luna, is live — and the framing is blunt: maximize making, minimize cost. The launch leans on the cheap end of OpenAI's model family to make agentic coding effectively free at the entry tier, a direct bid to put a frontier model in front of every new developer.
● INFRASTRUCTURE
First NVIDIA Vera Rubin racks power OpenAI's training stack
The first NVIDIA Vera Rubin racks are now running OpenAI's training stack — a milestone in the accelerated-computing roadmap behind frontier AI. NVIDIA called the deployment the start of a new infrastructure generation.
● INFERENCE
NVIDIA's NeMo Switchyard routes each agent step to the right model
The right model depends on the task. NeMo Switchyard lets developers route every step of an agent workflow across a chosen model pool by their own quality, latency and cost criteria. Kari Briski argues agent workflows need model routing because no single model wins every step.
● EVALUATION
Meta previews WildArtifactBench for real-world agent evals
Meta is previewing an internal evaluation framework that scores agents on complex, real-world tasks across diverse deliverable formats — using win rates and Elo scores from human and agentic preference judges rather than strict ground-truth.
Transparent backgrounds hit GPT-Image-2
Transparent backgrounds are now in preview for GPT-Image-2 in the API — reusable assets for product imagery, graphic design, mockups and marketing campaigns.
An Exa plugin unlocks 100B+ sources
A new Exa Labs plugin gives ChatGPT Work and Codex access to 100B+ websites, papers and docs — a sharp expansion of what agents can browse mid-task.
ChatGPT Sites adds teammate editors
Add teammates as editors on ChatGPT Sites to build and publish together, with Codex handling git management and CI behind the scenes.
Claude Code gains a Concise mode
Claude Code now leads with the result, keeps responses short, and still gives full detail on request. Turn it on in /config or settings.json.
Computer History reaches Europe
Computer History is now available in the EEA, UK and Switzerland for ChatGPT Pro, Business and Enterprise users on Mac.
Shared threads expose the build
Shared threads in Codex and ChatGPT Work publish a read-only link to the context and reasoning behind a pull request, deep dive or project handoff.
Qwen3.8-27B, "smaller and sharper than ever"
Alibaba thanks Unsloth as Qwen3.8-27B ships — a compact model the team frames as wonderful news for the community.
Ornith-1.5 serves in vLLM today
A self-improving, MIT-licensed family from 9B to 397B, SOTA among open models on coding and agentic tasks, now serving in vLLM.
Kimi K3 rolls out to most subscribers
Kimi K3 now reaches over half of the subscription base for included usage, US and Europe-hosted with zero data retention.
Gemini 3.7 Flash posts 84.6% on ARC-AGI-2
Verified scores: 84.6% on ARC-AGI-2 at $0.25 per task, and 95.5% on ARC-AGI-1 at $0.12 per task.
Grok 4.6 ties for #1 on the Agentic Index
Grok 4.6 ties for the top spot on the Artificial Analysis Agentic Index, matching Claude Opus 5 on the leaderboard.
GLM-5.3 scores 69 on DeepSWE
GLM-5.3 posts 69 on the official DeepSWE leaderboard, continuing the open-model surge in software-engineering benchmarks.
Recraft Studio adds five external models
Grok Imagine Image 2, MiniMax H3, Flux 3 Video, Qwen Image 3 Pro and Reve 2.1, all generate-able from a single canvas.
Pika audio models undercut on price
Pika launches music, SFX, speech and soundtrack models via one API, with music from $0.015 per minute — up to 10x cheaper than rivals.
SGLang adds DFlash2 recipes
DFlash2 recipes land in the Qwen3.8-27B cookbook, with the community reporting strong NVFP4 + DFlash2 results.
fx: a 6.3MB coding agent in Zig
A tiny, open coding agent that starts in about 10 microseconds — faster, its author notes, than other agents can boot.