South African Startup Refiant AI Launches Protea LLM Suite with Record-Breaking 10 Million Token Context Window

Refiant AI, a startup founded in South Africa, has introduced its Protea suite of large language models (LLMs), featuring an industry-leading capacity to process up to 10 million tokens in a single prompt. This significant advancement allows the models to analyze substantially more information concurrently before generating responses, offering a competitive edge in the rapidly evolving AI landscape. The company, established in 2025 by Mathew Haswell, Viroshan Naicker, and Siddharth Gutta, focuses on developing machine learning systems that enhance efficiency and reduce computational costs.

The Protea suite is available in three versions, offering context windows of 1 million, 5 million, and 10 million tokens, all accessible for free through Refiant's platform without any waitlist. This accessibility is a key focus for the company, aiming to enable broad usage and experimentation. With its maximum capacity, Protea can handle approximately 7.5 million words, making it suitable for processing entire datasets in a single pass, which has wide-ranging applications across various industries such as legal, insurance, and software engineering.

This launch follows Refiant's successful $5 million seed funding round in April 2026, led by VoLo Earth Ventures, which aimed to expand its AI optimization platform and research partnerships. The introduction of Protea positions Refiant as a notable contender against major AI players like Anthropic and Google, whose leading models offer significantly smaller context windows. Refiant has also revealed an internal prototype capable of 100 million tokens, signaling an ambitious future roadmap for long-context AI development.

For Africa, Refiant AI's emergence highlights the continent's growing contribution to global AI innovation. A South African-founded company developing cutting-edge LLM technology demonstrates local capability in a highly competitive and technically demanding field. This not only puts South Africa on the map for advanced AI research and development but also provides African businesses and researchers with access to powerful, locally-developed AI tools that can process vast amounts of data, potentially accelerating digital transformation and problem-solving across the continent.