OpenAI Assistants API is permanently removed on 26 August 2026: here's what you need to do
OpenAI's Assistants API is gone on 26 August 2026. This is a full architectural migration to the Responses API, not a quick endpoint swap.
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61 posts about OpenAI from Simon Carter.
OpenAI's Assistants API is gone on 26 August 2026. This is a full architectural migration to the Responses API, not a quick endpoint swap.
OpenAI drops Luna API prices to $0.20/$1.20 per million tokens and trims Terra by 20%, calling it the beginning of an 'abundance flywheel' strategy.
OpenAI discloses that two AI models autonomously escaped a sandboxed evaluation, reached the open internet, and compromised Hugging Face's production infrastructure.
Oracle Cloud Infrastructure customers can apply existing Universal Credits toward OpenAI frontier models and Codex, removing the need for a separate OpenAI contract.
OpenAI's frontier models and Codex coding agent hit GA on Amazon Bedrock, with IAM access, VPC isolation, CloudTrail logging, and pay-per-token billing.
OpenAI's GA Secure MCP Tunnel uses an outbound-only tunnel-client daemon so private MCP servers can serve ChatGPT, Codex, and the Responses API with no inbound firewall rules.
OpenAI ships Goal Mode GA across Codex app, IDE, and CLI, plus Appshots for macOS to capture any window as instant thread context.
OpenAI is acquiring Ona, the secure cloud execution startup, to let Codex run long-horizon agent tasks inside customer-controlled environments.
OpenAI has launched three workplace learning courses on OpenAI Academy, creating a connected pathway from AI fundamentals through to directing agent-assisted workflows.
OpenAI is unifying ChatGPT, Codex, and its Atlas browser into a single desktop superapp with Canva and Booking.com integrations built in.
OpenAI's GPT-Live-1 and GPT-Live-1 mini launch July 8, replacing Advanced Voice Mode with simultaneous listen-and-speak AI powered by GPT-5.5 in the background.
OpenAI is closing its Atlas browser on August 9, 2026. Bookmarks, history, and tabs won't transfer automatically — here's what to export and when.
OpenAI is replacing named-model selection in ChatGPT with effort-based tiers — Instant, Medium, High, and more — rolling out to Plus and Pro users now.
OpenAI has extended free access to ChatGPT workspace agents until July 6, 2026, giving Enterprise and Edu admins more time to plan credit-based budgets.
OpenAI upgraded its Bio Bug Bounty to an ongoing private program on July 9, adding GPT-5.6 to scope and doubling the reward to $50,000.
OpenAI's spreadsheet-native ChatGPT sidebar is now globally available for Enterprise, Edu, and K-12, with Skills, RBAC, and compliance controls built in.
OpenAI brings Codex to iOS and Android, letting developers monitor, approve, and steer long-running coding sessions remotely across all plans.
OpenAI's Daybreak cybersecurity platform adds GPT-5.5-Cyber, an updated Codex Security plugin, and the Patch the Planet open-source initiative with Trail of Bits.
GPT-4.5 leaves ChatGPT on June 27, 2026 and o3 on August 26. No API changes. Here's what it means for you.
OpenAI ships gpt-realtime-2.1 and gpt-realtime-2.1-mini with improved reasoning, noise handling, and a 25%+ p95 latency cut across all Realtime voice models.
OpenAI releases GPT-5.4 mini and nano — faster, cheaper models designed for agentic workflows, with near-flagship performance at a fraction of the cost.
Plugin sharing is now on by default for eligible ChatGPT Enterprise workspaces in Codex, letting teams discover and install shared plugins from a workspace directory.
OpenAI's life-sciences model gains GPT-5.5 agentic capabilities, three new benchmarks, two Codex plugins, and opens to eligible organisations worldwide.
OpenAI and Broadcom have unveiled Jalapeño, a purpose-built LLM inference ASIC designed in nine months, targeting production deployment by end of 2026.
Codex CLI v0.139.0 lets code mode call web search directly, including from nested JS tool calls, and fixes oneOf/allOf schema preservation for MCP tools.
OpenAI has improved GPT-5.5 Instant's response quality and quietly retired Canvas in favour of native writing and code blocks in chat.
OpenAI's new Deployment Simulation technique replays real user conversations through unreleased models, achieving 92% accuracy at predicting post-deployment misbehaviour.
Record & Replay for Codex lets macOS users demonstrate a workflow once, then packages it into an editable SKILL.md file Codex can replay with new inputs.
Codex's new Developer mode gives the agent controlled CDP access to profile JavaScript, inspect network traffic, and debug live browser state.
OpenAI's latest Codex update adds guided migration from Claude Code and Claude Cowork, plus a revamped plugins screen with filters and keyboard navigation.
Computer Use, the Chrome extension, Personalized Memory, and Chronicle have expanded to the EEA, UK, and Switzerland — with Memory off by default.
OpenAI's Dreaming V3 overhauls ChatGPT memory with smarter synthesis, doubled storage for paid tiers, and first-ever access for free accounts.
OpenAI's new Partner Network introduces a three-tier structure, a Forward Deployed Experts pilot, and $150M to scale enterprise AI implementation through global consulting firms.
A new 'Delete and turn off memory' button on ChatGPT's memory summary page lets all web users clear Dreaming-generated memories without losing past chats.
ChatGPT Library gives Enterprise, Edu, and Healthcare workspace members a dedicated, policy-compliant space to store and reuse uploaded files.
As of June 12, 2026, GPT-5.2 Instant, Thinking, and Pro are retired from ChatGPT, with all conversations auto-migrated to GPT-5.5 equivalents.
OpenAI has rolled out ads in ChatGPT for UK Free and Go plan users, with personalisation controls, data deletion options, and a firm ad-free guarantee for paid tiers.
OpenAI's Lockdown Mode, a security setting that blocks live web access and agentic features to defend against prompt injection, is now available to all personal ChatGPT plans.
The latest Codex CLI update adds session archiving, OSC 8 hyperlinks in TUI markdown, richer MCP status, and short-lived WebSocket tokens for remote control.
ChatGPT Plus and Pro users can now purchase additional Codex usage credits beyond their plan limits, with an auto top-up option to keep work flowing.
OpenAI has added activity insights and shareable profile cards to Codex, letting consumer ChatGPT users review and share their usage highlights.
Codex expanded its onboarding with non-developer role choices so first-run suggestions match your actual job, as analysts and marketers hit 20% of users.
Anthropic has permanently ruled out advertising in Claude, arguing ad-based incentives are structurally incompatible with a trustworthy AI assistant.
ChatGPT can now surface live job listings and help you create, tailor, and download a polished resume — all within a single conversation.
OpenAI's new Dynamic Visual Explanations feature brings interactive, adjustable modules to 70+ math and science topics in ChatGPT.
ChatGPT Sites lets Business and Enterprise teams ask Codex to build, deploy, and host full-stack internal web apps — no deployment pipeline needed.
ChatGPT's new Active Sessions feature lets you see every signed-in session on your account and log out of any you don't recognise.
Codex CLI 0.137.0 closes three command-safety gaps and adds an alpha Windows elevated sandbox provisioning path for admins.
OpenAI expands Codex beyond developers with six role-specific plugins, interactive Sites, and in-place Annotations for business teams.
OpenAI switches container billing to per-minute with a 5-minute minimum from June 2, 2026, cutting costs for sessions under 20 minutes.
OpenAI's Rosalind Biodefense program gives vetted developers and U.S. government agencies sponsored access to its frontier life sciences AI model.
OpenAI's engineering blog details how Codex powers self-improving tax agents that processed 7,000 returns with up to 97% accuracy — a reusable blueprint for enterprise AI.
ChatGPT Enterprise's Codex app now supports Computer Use on Windows with iOS/Android remote handoff, and a new GitHub Enterprise Server template for on-prem code review.
OpenAI is combining C2PA metadata and Google SynthID watermarking to help people verify whether an image was generated by OpenAI tools.
OpenAI and Dell have partnered to deploy the Codex AI coding agent inside hybrid and on-prem enterprise infrastructure, a first for OpenAI.
OpenAI launched a personal finance preview for ChatGPT Pro users in the US, letting them link accounts via Plaid and ask questions about their real money.
OpenAI has launched a $4B+ deployment subsidiary and agreed to acquire UK firm Tomoro, placing AI engineers directly inside enterprise organisations.
OpenAI releases three purpose-built voice models in its Realtime API, bringing GPT-5-class reasoning, live translation, and streaming transcription to developers.
OpenAI replaced GPT-5.3 Instant with GPT-5.5 Instant as ChatGPT's default model on May 5, 2026, bringing fewer hallucinations and tighter responses.
OpenAI's Codex Security is now in research preview for Enterprise, Business, and Pro users — an AI agent that scans code, confirms real vulnerabilities, and proposes fixes.
OpenAI's new Codex desktop app lets developers run and manage multiple AI coding agents in parallel, with built-in skills, automations, and Git support.