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Replit drops Anthropic as default for ChatGPT, CEO says

The Arena

Replit drops Anthropic as default for ChatGPT, CEO says

Replit's CEO used the TechCrunch Disrupt stage to say what the company had never said out loud before: the Anthropic partnership is over. The clarification that followed matters as much as the statement — and the two don't entirely agree. Replit CEO Amjad Masad said the AI coding platform is no longer working with Anthropic, citing cost and telling the Disrupt audience plainly: "I think ChatGPT is better now." Speaking onstage Thursday, Masad said the decision rested on three legs — cost…

Open Source Radar — October 16: the agent supply chain

The Stack

Open Source Radar — October 16: the agent supply chain

Today's daily trending board is almost entirely plumbing — the four AI repos that surfaced are a harness, a skills library, a plugin directory and a retrieval engine. Not one new model among them. That is the signal: the layer around the model is getting productised. ruflo (TypeScript, ~75,000 stars) — The agent harness that keeps returning to the daily board: a swarm orchestrator with a shared memory layer, a large fleet of specialised agents, and a marketplace of plugins and packages that…

OpenAI gave GPT-4o API users three months' notice — its rule says six

The Stack

OpenAI gave GPT-4o API users three months' notice — its rule says six

Two deprecation notices landed in the same week, and they point in opposite directions: a consumer model pulled off ChatGPT on schedule, and five production API models given half the notice OpenAI normally promises. OpenAI notified developers on October 14 that five dated GPT-4 API models shut down on January 14, 2027 — three months out, not the six its own deprecation policy requires for generally available models.

Bluesky's Attie now lets anyone build sites and games

The Arena

Bluesky's Attie now lets anyone build sites and games

Bluesky opened its experimental AI app to non-developers today, and a magazine with a print habit went the other way — two different answers to the same question about who gets to make things. Bluesky expanded Attie, its experimental AI product, so users can build websites, polls, quizzes and games instead of only custom feeds — and CEO Toni Schneider has a name for the category: "social vibe coding." Announced on stage at TechCrunch Disrupt, the new site builder ties every project to a…

Open Source Radar — October 15: who watches the agents

The Stack

Open Source Radar — October 15: who watches the agents

Today's fresh signal is less about new frameworks and more about control surfaces: independent auditing, structured lifecycles, and the first credible attempts to give an agent real hands — plus one skill that refuses to trust its own eyes. iFixAi (Python, ~28,000 stars, Apache-2.0) — An independent audit for agents, run either by a human or by the agent itself, built around the question eval suites skip: is this thing actually doing the job it was given?

Codex CLI now ships a self-updating background daemon by default

The Stack

Codex CLI now ships a self-updating background daemon by default

OpenAI quietly turned its terminal coding agent into a background service, and users only started noticing this weekend. Two other stories below. Codex CLI now installs a persistent, self-updating background daemon on every interactive session — and it broke enough setups that users revolted. The change shipped September 25 in version 0.157.0: OpenAI's release notes call it "automatic background-server startup for eligible interactive sessions," and it was promoted from opt-in to default…

How to — review AI-written code before you merge it

The Stack

How to — review AI-written code before you merge it

You want to merge AI-written code without reading every line of it — and still be able to say, out loud, what it does and what happens when it breaks. That is a review job, and it is mostly about reading the right parts in the right order. Cockroach Labs ran its codebase like a teaching hospital for five months and reports merging well over a million lines of code with seven total reverts — a run where no agent's plan moved without a human-signed review first (we covered Coding agents as a…

GPT-4o's first API snapshot shuts down on October 23

The Everyday

GPT-4o's first API snapshot shuts down on October 23

Eight months after GPT-4o left ChatGPT, the people who refuse to say goodbye are counting down to a new date — and a community tool built on DeepSeek's agent harness lands this weekend. OpenAI will deactivate gpt-4o-2024-05-13, the very first GPT-4o API snapshot, on October 23 — 12 days from now. The company's own deprecation page lists the shutdown with a suggested replacement, and it's the last remaining line item for the model that debuted in May 2024 with Altman's one-word post, "her."…

Open Source Radar — October 10: reviewers, skills, and 3D maps

The Stack

Open Source Radar — October 10: reviewers, skills, and 3D maps

Today's trending board skews practical: tooling that fixes code, teaches agents a framework, and rebuilds 3D scenes from video. Here's what's worth your stars. alibaba/open-code-review (Go, 45.6k stars) — Alibaba open-sourced the code review tool it runs internally, and it shows: a hybrid of deterministic static-analysis pipelines for the known bug classes (null dereferences, thread-safety, XSS, SQL injection) plus an LLM agent that writes precise, line-level comments.

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