OpenAI has rolled out GPT-5.5 Instant as ChatGPT's default model, adding memory-source controls, personalization tools, and a ...

The new GPT-5.5 Instant model will replace GPT-3.5 Instant as the default model for ChatGPT ...

OpenAI makes GPT‑5.5 Instant ChatGPT’s default, cutting hallucinations and boosting personalization with memory sources.

GPT-5.5 Instant showed gains across multiple benchmarks. On the AIME 2025 competition math test, accuracy rose to 81.2% from ...

GPT-5.5 Instant replaces the older default model with upgrades in reasoning, personalisation, and transparency features.

OpenAI has launched a new AI model dubbed GPT-5.5 Instant, and made it the default model for ChatGPT users: Features, ...

OpenAI has launched three advanced realtime voice AI models: GPT-Realtime-2, GPT-Realtime-Translate and GPT-Realtime-Whisper.

OpenAI has rolled out GPT‑5.5 Instant as ChatGPT’s default model, replacing GPT‑5.3 Instant for all users. Internal tests show it produces 52.5% fewer hallucinated claims in high‑stakes fields like ...

OpenAI’s GPT-5.5 Instant is now ChatGPT’s default model, promising fewer hallucinations, shorter answers, better memory ...

OpenAI has quietly delivered one of the most noticeable upgrades to ChatGPT in recent memory. As of May 5, 2026, GPT-5.5 Instant is now the default model for all logged-in ChatGPT users worldwide, ...

GPT-5.5 Instant, a new foundation model released by OpenAI earlier today, will take the place of GPT-5.3 Instant as the ...