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OpenAI Adopts C2PA and SynthID to Combat AI-Generated Misinformation
OpenAI joined the C2PA steering committee and embedded Google's SynthID watermarking in all AI images, creating a two-layer provenance standard for detecting synthetic media.
OpenAI Files Confidential S-1 with SEC: $1 Trillion IPO Targets September 2026
OpenAI filed a confidential S-1 with the SEC on May 22, 2026, targeting a $1 trillion IPO as early as September, led by Goldman Sachs and Morgan Stanley.
OpenAI and Dell Partner to Deploy Codex in Hybrid and On-Premises Enterprise Environments
OpenAI and Dell Technologies announced on May 19, 2026 a partnership to bring Codex to hybrid and on-premises infrastructure via the Dell AI Factory, targeting the 5,000+ enterprises with existing Dell deployments.
OpenAI's AI Solves an 80-Year Math Problem: The Erdős Unit Distance Conjecture
An OpenAI general-purpose reasoning model autonomously disproved the planar unit distance conjecture posed by Paul Erdős in 1946, making AI history in formal mathematics.
GPT-5.5 Instant Becomes ChatGPT's New Default: 52% Fewer Hallucinations
OpenAI replaced GPT-5.3 Instant with GPT-5.5 Instant as ChatGPT's default model on May 5, 2026, delivering 52.5% fewer hallucinated claims and deeper memory personalization.
ChatGPT File Library Now Free for All Users: 500 MB Storage Comes to Free and Go Plans
OpenAI expands ChatGPT File Library to Free and Go users globally, including in the EEA, with tiered storage from 500 MB to 100 GB — ending the era of re-uploading the same file repeatedly.
ChatGPT Personal Finance Launches: Connect Your Bank for AI-Powered Money Advice
OpenAI launched a personal finance dashboard in ChatGPT Pro on May 15, integrating with 12,000+ banks via Plaid to offer AI-driven spending analysis and multi-year financial planning.
OpenAI Brings Codex to iOS and Android: Remote Coding Workflows From Your Phone
OpenAI launched Codex on the ChatGPT mobile app for iOS and Android on May 14, 2026, enabling developers to monitor, approve, and manage AI coding agents remotely with new Hooks and Remote SSH features.
OpenAI Daybreak: GPT-5.5-Cyber Brings AI to Offensive Security Testing
OpenAI launched Daybreak on May 12, 2026, a cybersecurity platform pairing GPT-5.5-Cyber with Codex Security for automated threat modeling, vulnerability discovery, and patch validation in authorized environments.
OpenAI Workspace Agents: ChatGPT Becomes a Persistent Enterprise Collaborator
OpenAI launches Workspace Agents in ChatGPT, enabling teams to build persistent cloud-based AI agents that automate workflows across Slack, Salesforce, and internal tools.
OpenAI Launches GPT-Realtime-2: Live Voice Reasoning and Real-Time Translation
OpenAI released three new real-time audio API models on May 7, 2026: GPT-Realtime-2 for voice reasoning, GPT-Realtime-Translate for live speech translation in 70+ languages, and GPT-Realtime-Whisper for streaming transcription.
GPT-5.5 Instant Is Now ChatGPT's Default: 52.5% Fewer Hallucinations
OpenAI replaced GPT-5.3 Instant with GPT-5.5 Instant as ChatGPT's default model on May 5, 2026, cutting hallucinations by 52.5% on high-stakes prompts and adding Gmail-powered personalization.
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