OpenAI Introduces GPT-5.5 Instant as Default for ChatGPT with Enhanced Accuracy
OpenAI rolls out GPT-5.5 Instant with improved accuracy, sets it as ChatGPT default
The Indian Express
Image: The Indian Express
OpenAI has launched GPT-5.5 Instant, now the default model for ChatGPT, replacing GPT-5.3 Instant. This new model aims to reduce hallucinations in critical fields like law and medicine while improving performance metrics, including a score of 81.2 on the AIME 2025 math benchmark.
- 01GPT-5.5 Instant is the new default model for ChatGPT, enhancing accuracy and reducing hallucinations.
- 02It scored 81.2 on the AIME 2025 math benchmark, significantly improving from the previous model's score.
- 03New context-related improvements allow the AI to reference prior conversations and user data for tailored responses.
- 04The model will initially be available to Plus and Pro subscribers, with a mobile app update coming soon.
- 05Developers can access GPT-5.5 Instant via API under the name 'chat-latest.'
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OpenAI has officially launched GPT-5.5 Instant, which will serve as the default model for ChatGPT, succeeding GPT-5.3 Instant. This new model aims to enhance accuracy and minimize hallucinations in critical sectors such as law, medicine, and finance, while maintaining speed. Following the general release of the GPT-5.5 series last month, which introduced significant advancements in code generation and reasoning, GPT-5.5 Instant has shown substantial performance improvements. Notably, it achieved 81.2 points on the AIME 2025 math benchmark, a marked increase from the previous score of 65.4. Additionally, it scored 76 on the MMMU-Pro multimodal reasoning benchmark, up from 69.2. One of the key updates is the introduction of context-related improvements, enabling the AI to utilize integrated search tools to reference prior conversations and user-uploaded files, enhancing the personalization of responses. Initially, this feature will be available to Plus and Pro subscribers through the website, with a mobile app update expected soon. Furthermore, GPT-5.5 Instant will be accessible to developers via API under the name 'chat-latest,' while GPT-5.3 will remain available for paid users for a limited transition period of three months.
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