OpenAI launched its new ChatGPT 5.3 Instant model, enabling greater accuracy and fewer data gaps, as the chatbot faces a reduction in usage amid the Anthropic row, with the company signing a deal with the Pentagon.
ChatGPT maker said that the Instant model of GPT-5.3 would have fewer unnecessary refusals, while delivering sharper contextualisation, a better understanding of the question, and a more consistent response tone while chatting.
Reduces unnecessary refusals
“GPT‑5.3 Instant significantly reduces unnecessary refusals, while toning down overly defensive or moralising preambles before answering the question,” said OpenAI.
“GPT‑5.3 Instant also improves the quality of answers when information comes from the web. It more effectively balances what it finds online with its own knowledge and reasoning—for example, using its existing understanding to contextualize recent news rather than simply summarizing search results,” the company added in the report.
The update focuses on the parts of the ChatGPT experience people feel every day: tone, relevance, and conversational flow. These are nuanced problems that don’t always show up in benchmarks, but shape whether ChatGPT feels helpful or frustrating. GPT‑5.3 Instantly reflects user feedback in these areas.
What does the new version provide?
GPT‑5.3 Instant also improves the quality of answers when information comes from the web. It more effectively balances what it finds online with its own knowledge and reasoning—for example, using its existing understanding to contextualize recent news rather than simply summarizing search results.
The company further promised a reduction in hallucination and ill practices, with the user-feedback evaluation showing that these hallucinations decreased by 22.5 per cent with web use and by 9.6 per cent without web access.
The new version of OpenAI’s GPT, 5.3, is available to all users. The release comes amid a challenging time for OpenAI’s reputation and Anthropic’s tussle with the Pentagon.
Anthropic vs Pentagon
OpenAI rival Anthropic is currently locked in a dispute with the Pentagon over “supply chain risk.” US President Donald Trump ordered the government to phase out Claude when the company refused to change its safeguarding policy on the use of AI for weapons and mass surveillance.
“Our strong preference is to continue to serve the Department and our warfighters—with our two requested safeguards in place,” said Anthropic in a blog post on February 26.
