OpenAI's GPT-5.5 is here, and it's no potato: narrowly beats Anthropic's Claude Mythos Preview on Terminal-Bench 2.0

OpenAI's GPT-5.5 is here, and it's no potato: narrowly beats Anthropic's Claude Mythos Preview on Terminal-Bench 2.0

OpenAI's GPT-5.5 is here, and it's no potato: narrowly beats Anthropic's Claude Mythos Preview on Terminal-Bench 2.0

OpenAI has unveiled its latest offering, GPT-5.5, a more powerful AI large language model for use in ChatGPT and through its application programming interface (API). The model has been codenamed "Spud" internally and has been highly anticipated by the industry. GPT-5.5 has taken the lead for OpenAI in generally available LLMs, beating rivals Anthropic's and Google's latest public offerings, and even narrowly beating the private Anthropic Claude Mythos Preview model on one benchmark.

Background & Context

The development of GPT-5.5 comes after months of rumors and reports of OpenAI working on a new, more powerful AI model. The company has been at the forefront of AI research and development, and GPT-5.5 is the latest iteration of its language model technology. OpenAI has been positioning itself as a leader in the AI space, with a focus on developing models that can interact with computer operating systems and professional software stacks in a more intuitive and intelligent way.

Impact on Swiss SMEs & Finance

The impact of GPT-5.5 on Swiss SMEs and finance is significant. The model's ability to code and perform complex computer tasks with ease is likely to have a major impact on the way businesses operate. Swiss companies, in particular, are known for their focus on innovation and technology, and GPT-5.5 is likely to be of great interest to them. The model's ability to perform tasks with less guidance and its intuitive interface are likely to make it a game-changer for businesses looking to automate tasks and improve efficiency.

What to Watch

As GPT-5.5 is rolled out, it will be interesting to see how it performs in real-world applications. OpenAI has positioned the model as a fundamental redesign of how intelligence interacts with computer operating systems and professional software stacks, and it will be interesting to see how it lives up to this promise. Additionally, the impact of GPT-5.5 on the AI industry as a whole will be worth watching, as it is likely to set a new standard for language models.

Source

Original Article: OpenAI's GPT-5.5 is here, and it's no potato: narrowly beats Anthropic's Claude Mythos Preview on Terminal-Bench 2.0

Published: April 23, 2026

Author: carl.franzen@venturebeat.com (Carl Franzen)

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Disclaimer: This article is for informational purposes only and does not constitute financial advice. Consult a licensed financial advisor before making investment decisions.