DeepSeek vs OpenAI: Foundation Models Comparison

DeepSeek is a Chinese artificial intelligence company founded in July 2023 by Liang Wenfeng, co-founder of the hedge fund High-Flyer, which owns and funds the company. Headquartered in Hangzhou, Zhejiang, DeepSeek focuses on developing open-source large language models (LLMs) that have sent shock waves through the global AI industry. The company gained international attention with its R1 model release, demonstrating advanced AI reasoning capabilities at a fraction of the cost of competing American models.

DeepSeek's breakthrough technology has been described as triggering a 'Sputnik moment' for the United States in artificial intelligence, particularly due to its cost-effective, high-performing, and open-source approach. The company's models challenge the prevailing narrative that building cutting-edge AI requires massive capital expenditure, proving that innovative architecture and optimization can achieve comparable results more efficiently. This achievement has significant implications for the democratization of AI technology globally.

The company's commitment to open-source development sets it apart from many competitors, allowing researchers and developers worldwide to access, study, and build upon DeepSeek's innovations. DeepSeek's success demonstrates China's growing capabilities in AI research and development, particularly in creating efficient models that can compete with well-funded Western counterparts. The company continues to advance the state of the art in LLM development while maintaining its focus on accessibility and cost-effectiveness.

OpenAI is the creator of ChatGPT and the GPT series of large language models, having pioneered the commercial LLM API market. Founded in December 2015 by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, and others as a non-profit, it transitioned to a capped-profit model in 2019 and is currently restructuring as a for-profit public benefit corporation.

OpenAI's API platform provides access to text generation (GPT-4o, GPT-5, o-series reasoning models), image generation (DALL-E), speech-to-text (Whisper), text-to-speech, and embedding models. The platform supports fine-tuning, function calling, and the Responses API for agent-native workflows. The open-source Agents SDK and tools like code interpreter and web search enable developers to build sophisticated AI applications.

In February 2026, OpenAI closed a record $110 billion funding round from Amazon, Nvidia, and SoftBank, valuing the company at $840 billion post-money. The company employs approximately 3,500-7,200 people and is reportedly targeting a 2027 IPO at up to a $1 trillion valuation.