CHATGPT

2026-08

Retiring OpenAI o3 from ChatGPT

August 26, 2026. OpenAI o3 will be retired from ChatGPT following a 90-day sunset period. Existing conversations will automatically continue on corresponding GPT-5.5 models.

// FULL RELEASE NOTES

2026-07

ChatGPT desktop app experience updates

July 15, 2026. ChatGPT desktop app received further updates, including a global switcher for Chat and Work, unified Recents, Projects in the app, and cross-device Work syncing.

2026-07

Increased Custom Instructions Limit

July 14, 2026. ChatGPT increased the character limit for custom instructions for paid users, allowing more extensive customization of response style and behavior.

2026-07

Supercharged Search Across Chats, Projects, and Files

July 13, 2026. ChatGPT rolled out enhanced search capabilities, allowing users to quickly find past chats, projects, images, and documents from a single location.

2026-07

ChatGPT Returns to WhatsApp in EEA

July 13, 2026. OpenAI restored ChatGPT on WhatsApp across the European Economic Area, ending a six-month ban that had cut off more than 50 million users following regulatory action by the EU Commission against Meta.

2026-07

Introducing ChatGPT Work

July 9, 2026. OpenAI introduced ChatGPT Work, an agent designed for longer, more involved tasks, capable of researching, analyzing, and creating various documents across connected apps and files.

2026-07

New Controls and Capabilities for ChatGPT Workspace Agents

July 9, 2026. ChatGPT Business workspaces gained new controls for agents, including GPT-5.5 and reasoning effort settings, guided agent setup, and speech output capabilities.

2026-07

GPT-5.6 Series (Sol, Terra, Luna) Public Release

July 9, 2026. OpenAI publicly released its GPT-5.6 series, including Sol (flagship), Terra (balanced), and Luna (fast/affordable), following a limited preview.

2026-07

GPT-Live — Full-Duplex Voice Models

July 8, 2026. OpenAI released GPT-Live-1 and GPT-Live-1 mini, full-duplex voice models that listen and speak simultaneously, replacing Advanced Voice Mode in ChatGPT with more natural turn-taking and live translation.

2026-07

ChatGPT for PowerPoint Generally Available

July 6, 2026. ChatGPT for PowerPoint is now generally available, allowing users to generate slides, summarize content, and create data visualizations directly within PowerPoint.

2026-07

ChatGPT Debuts on GenAI.mil for US Defense Personnel

OpenAI's flagship chatbot, ChatGPT, is set to debut on GenAI.mil in early July 2026, providing access to over 3 million US defense civilian and military personnel.

2026-06

Retiring GPT-4.5

June 27, 2026. OpenAI retired GPT-4.5 from ChatGPT. Existing conversations will automatically continue on corresponding GPT-5.5 models.

2026-06

GPT-5.6 Series (Sol, Terra, Luna) Preview

June 26, 2026. OpenAI began a limited preview of its GPT-5.6 series, including Sol (flagship), Terra (balanced), and Luna (fast/affordable), with broader availability planned for the coming weeks.

2026-06

Personal Finance in ChatGPT Expands to Plus Users and Android

June 26, 2026. The personal finance experience in ChatGPT is now available to Plus users in the U.S. on web and iOS, and to Pro and Plus users on Android.

2026-06

Improved Dictation in ChatGPT

June 26, 2026. ChatGPT rolled out a new speech-to-text model for dictation across all plans, significantly improving transcription accuracy across languages and accents.

2026-06

Codex Remote — General Availability

June 25, 2026. OpenAI made Codex Remote generally available on all paid ChatGPT plans, allowing users to start or continue AI coding sessions on a connected Mac or Windows host directly from their mobile device.

2026-06

GPT-5.5 Instant Quality Update

June 24, 2026. The primary GPT-5.5 Instant model received a quality upgrade, improving its ability to infer user goals, maintain context, and provide more intentional formatting.

2026-06

Large Pastes Handled as Attachments

June 22, 2026. ChatGPT Free and Go users now have large pastes (over 10k characters) automatically converted into attachments, keeping the composer cleaner and preventing context window consumption.

2026-06

GPT-5.5-Cyber Expanded Capabilities

June 23, 2026. OpenAI released an improved version of its GPT-5.5-Cyber model to trusted defenders as part of the Daybreak initiative, enhancing its ability to find and patch software vulnerabilities.

2026-06

Improving Health Intelligence in ChatGPT

June 18, 2026. OpenAI is improving health intelligence in ChatGPT.

2026-06

ChatGPT App Experience Updates (June 18)

June 18, 2026. ChatGPT received further app experience updates, including pronunciation help, World Cup conversation updates, and more control over connected apps.

2026-06

Real-time Voice Mode for Pets in Codex

June 19, 2026. OpenAI is preparing a real-time voice mode for Pets in Codex, suggesting enhanced interactive capabilities for coding agents.

2026-06

ChatGPT for Science Subscription Plan

June 17, 2026. OpenAI is readying a ChatGPT for Science subscription plan, likely offering specialized tools and models for scientific research.

2026-06

Scheduled tasks in ChatGPT

ChatGPT now offers scheduled tasks, allowing users to set reminders, handle recurring work, and monitor information with improved management and notifications.

2026-06

Introducing the OpenAI Partner Network

June 14, 2026. OpenAI introduced the OpenAI Partner Network.

2026-06

Codex App Features in EEA, UK, and Switzerland

June 12, 2026. Codex app capabilities, including Computer Use on macOS and Windows, a Chrome extension, Memories, and Chronicle (research preview), are now available in the European Economic Area, the United Kingdom, and Switzerland.

2026-06

Additional Controls for Memory Summary

June 12, 2026. ChatGPT now offers additional controls for memory summary, allowing users to delete memories and turn off memory from the summary page.

2026-06

Retiring GPT-5.2 Models

June 12, 2026. OpenAI retired GPT-5.2 models (Instant, Thinking, Pro) from ChatGPT. Existing conversations will automatically continue on corresponding GPT-5.5 models.

2026-06

GPT-5.5-Cyber to EU

June 12, 2026. OpenAI made GPT-5.5-Cyber, a specialized cybersecurity variant of its flagship model, available to vetted EU cybersecurity teams, businesses, governments, and institutions.

2026-06

ChatGPT Enterprise/EDU Library and Admin Controls

June 11, 2026. ChatGPT Enterprise/EDU workspaces gain a dedicated Library for file management and new admin controls, alongside enhanced Codex upgrades for computer use and debugging.

2026-06

Codex Updates

June 11, 2026. OpenAI made several Codex updates, including rate-limit reset banking for eligible Plus and Pro users and the ability to send referral invitations.

2026-06

GPT-5.5, GPT-5.4, and Codex on Amazon Bedrock

June 11, 2026. OpenAI's GPT-5.5, GPT-5.4 models, and Codex are now generally available on Amazon Bedrock, providing access to frontier models and a coding agent for software development within AWS environments.

2026-06

Simplified Model Picker Controls

June 10, 2026. ChatGPT updates its model picker with simplified options (Instant, Medium, High, Extra High, Pro Standard, Pro Extended) for easier balance of speed and reasoning effort.

2026-06

ChatGPT App Experience Updates

June 8, 2026. ChatGPT app receives updates including interactive charts, table of contents for longer conversations, full-screen writing blocks, email sending from chat, and mobile improvements.

2026-06

Active Account Session Controls

June 2, 2026. ChatGPT rolled out Active sessions, a new security feature allowing users to review and sign out of sessions associated with their account.

2026-06

ChatGPT Memory Updates

June 4, 2026. ChatGPT memories are now updated automatically, tracking important details to build on shared context. Rolling out to Plus and Pro users in the US.

2026-06

Reusable Prompts Deprecated

June 3, 2026. OpenAI deprecated reusable prompt objects and scheduled the prompts API shutdown, urging developers to migrate to application code.

2026-06

GPT-Rosalind — New Capabilities for Life Sciences

OpenAI introduces new capabilities to its GPT-Rosalind series, purpose-built for life sciences research at enterprise scale, combining GPT-5.5's agentic coding and tool-use with stronger biological intelligence.

2026-05

Shopping Updates in ChatGPT

May 21, 2026. OpenAI improved the shopping experience in ChatGPT, making it easier to discover, compare, and decide on products with richer visuals and side-by-side comparisons.

2026-05

GPT-5.5 Instant — New ChatGPT Default

Released May 2026. GPT-5.5 Instant replaces GPT-5 as the default model in ChatGPT for free and Plus users. Faster, lower-cost version of GPT-5.5 optimised for everyday use. Updated May 28, 2026, with improved response style and quality, and June 9, 2026, with personalization improvements.

2026-05

GPT-5.5-Cyber Initial Announcement

May 7, 2026. OpenAI announced GPT-5.5-Cyber, a specialized variant for vetted cybersecurity teams, with fewer restrictions on cybersecurity-related queries for legitimate defensive purposes.

2026-05

Retiring OpenAI o3 and GPT-4.5

May 28, 2026. OpenAI announced the retirement of older models o3 and GPT-4.5 from ChatGPT to focus on newer, more capable models.

2026-04

GPT-5.5 — Agentic Flagship

Released April 23, 2026 (API April 24). OpenAI's smartest model yet — built specifically for long-horizon agentic tasks. Excels at code, research, data analysis, and computer operation across tools.

2025-12

GPT-5.2 + GPT-5.2-Codex

Released December 11, 2025. OpenAI's first GPT-5 point release — ships in three variants: Instant, Thinking, and Pro. GPT-5.2-Codex specialises in software engineering.

2025-08

GPT-5

Released August 7, 2025. OpenAI ships GPT-5 — a unified model collapsing the o-series and GPT families into a single multimodal, reasoning-capable architecture.

2025-04

o3 + o4-mini GA

OpenAI's most capable reasoning models reach general availability. o3 tops ARC-AGI at 87.5%. o4-mini delivers o3-class reasoning at significantly lower cost.

2025-03

GPT-4.5 + Operator

GPT-4.5 ships as the largest GPT model to date. Operator launches simultaneously — OpenAI's agentic browser product that handles web tasks autonomously.

2024-12

Apple Intelligence — ChatGPT on 1B Devices

Apple ships ChatGPT inside iOS 18.2 and Siri in December 2024. OpenAI gains distribution to over 1 billion Apple devices with zero install required.

2024-09

o1 + o1-mini

OpenAI introduces test-time compute scaling — models that think longer on harder problems. o1 sets records on math olympiad and PhD-level science benchmarks.

2024-05

GPT-4o

Native multimodal model — text, audio, and vision in one unified architecture. Real-time voice with natural latency. Free tier expanded to all ChatGPT users.