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OpenAI Introduces GPT-5.5 Instant As Default Model For ChatGPT

Enhancing Reliability In Critical Domains

OpenAI introduced GPT-5.5 Instant as the new default model for ChatGPT, replacing GPT-5.3 Instant. The update focuses on reducing inaccurate or misleading responses, particularly in domains such as law, medicine and finance, while maintaining low-latency performance for everyday use.

Performance Metrics And Benchmark Achievements

GPT-5.5 Instant scored 81.2 on the AIME 2025 mathematics benchmark, compared with 65.4 for GPT-5.3 Instant. Performance on the MMMU-Pro multimodal reasoning benchmark improved to 76 from 69.2. Additional gains were reported in coding tasks and knowledge-based workflows, indicating broader improvements across both technical and general-use applications.

Innovative Contextual Memory And Search Capabilities

The model introduces expanded context handling through integration with its search tools. This allows it to reference prior conversations, uploaded documents and connected services such as Gmail when generating responses. Access is currently available to Plus and Pro users on the web, with a mobile rollout planned. Broader availability across Free, Go, Business and enterprise tiers is expected in the coming weeks.

Transparency And User Control

ChatGPT now displays memory sources used in responses, enabling users to understand how outputs are generated and which data points are referenced. Users can review, remove or update stored information. Shared conversations do not expose memory sources, maintaining separation between user data and shared content.

Opportunities For Developers

Developers can access GPT-5.5 Instant via the API under the “chat-latest” endpoint, supporting integration into existing products and workflows. GPT-5.3 Instant will remain available to paid users for a three-month transition period, allowing time to adapt applications and systems built on earlier versions.

Navigating User Sentiments Amid Change

The rollout follows earlier model changes, including the retirement of GPT-4o in February 2026. Previous transitions prompted user feedback related to changes in tone, behavior and output consistency. Ongoing updates reflect continued iteration on model performance, reliability and user experience across different use cases.

Eurobank Wins Two Euromoney Awards Following Cyprus Merger

Eurobank has been named Cyprus’ Best Bank for 2026 by Euromoney, while also receiving the award for Best Bank for Large Corporates at the publication’s latest Awards for Excellence.

Merger Marks A Milestone

The awards recognise the bank’s performance during 2025, a year marked by the completion of the legal merger between Hellenic Bank and Eurobank Cyprus. The transaction created Eurobank Limited, which the group says is now Cyprus’ largest banking and insurance organisation, with assets exceeding €28 billion.

Euromoney’s Awards for Excellence evaluate banks’ performance over the previous calendar year, with this edition covering January 1 to December 31, 2025.

Lending, Customers And Digital Growth

Eurobank said its business lending portfolio expanded by around 17 per cent during 2025, while its customer base grew to more than 710,000 retail clients and 11,500 business customers.

The bank also continued its digital expansion, saying more than 96 per cent of transactions are now completed through digital channels, and most financing applications are submitted via its mobile app.

Expanding International Presence

Eurobank also highlighted the opening of its first representative office in India, describing the move as a step toward strengthening business links between Cyprus and India while supporting Cyprus’ role as a gateway to the European Union for Indian businesses and investors.

According to the bank, Euromoney recognised not only the successful completion of the merger but also its lending growth, digital transformation and contribution to Cyprus’ position as an international business and investment hub.

CEO On The Awards

“The Euromoney awards confirm Eurobank’s strong momentum and the successful implementation of our group’s strategy in Cyprus,” Chief Executive Michalis Louis said.

He said the merger strengthened the bank’s ability to support households, businesses and the wider economy, while highlighting continued investment in digital services and the opening of the representative office in India as key milestones during the year.

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