OpenAI announced this Thursday GPT-5.5, its most advanced and intuitive artificial intelligence model to date, available from day one for ChatGPT users with Plus, Pro, Business, and Enterprise plans, as well as on the Codex platform.
The company describes it as a new class of intelligence for real work, designed to understand complex objectives, use tools, verify its own work, and carry out tasks to their conclusion without the need for constant supervision.
Unlike previous models that were larger and sacrificed speed for capacity, GPT-5.5 maintains the same latency per token as its predecessor GPT-5.4 in real production, while operating at a significantly higher level of intelligence.
The model also uses fewer tokens to complete the same tasks in Codex, making it more efficient and cost-effective. According to data from the coding index of Artificial Analysis, it offers cutting-edge intelligence at half the cost of competing models.
In the main performance indicators, GPT-5.5 surpasses both its predecessor and rival models from Anthropic and Google. In Terminal-Bench 2.0, which assesses complex workflows in command line environments, it achieves 82.7%, compared to 75.1% for GPT-5.4 and 69.4% for Claude Opus 4.7 from Anthropic.
In OSWorld-Verified, which measures the autonomous usage of computers, it achieves 78.7%, surpassing Claude Opus 4.7 with 78.0%. In cybersecurity, it scores 81.8% in CyberGym compared to the 73.1% of the Anthropic model.
The improvements are particularly noticeable in agentic coding. Dan Shipper, founder and CEO of Every, described it as "the first coding model I've used with true conceptual clarity," after observing that GPT-5.5 solved a debugging issue that GPT-5.4 could not address.
Pietro Schirano, CEO of MagicPath, reported that the model merged a branch with hundreds of code changes in about twenty minutes in a single attempt, and described the experience as working with "superior intelligence."
OpenAI also launched a more powerful variant, GPT-5.5 Pro, available exclusively for Pro, Business, and Enterprise plans. Access via the application programming interface is not yet active, although the company announced that it will be available very soon.
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