In a major development for artificial intelligence and its enterprise applications, AI research company Anthropic has simultaneously launched a significant model upgrade and announced a strategic partnership with Indian IT giant Infosys. These moves aim to solidify Anthropic's position in the competitive AI landscape and bridge the gap between advanced AI research and practical, regulated business use.
Anthropic officially launched its latest mid-size model, Sonnet 4.6, on February 17, 2026. The most groundbreaking feature is the beta inclusion of a revolutionary one-million-token context window, doubling the previous maximum for the Sonnet series. This allows the model to process "entire codebases, lengthy contracts, or dozens of research papers in a single request." The model was immediately designated as the default for both Free and Pro tier users on Anthropic's platform.
The engineering team focused enhancements on coding proficiency, precise instruction-following, and computer use tasks. In benchmarks, Sonnet 4.6 achieved top marks in OS World for computer use and SWE-Bench for software engineering. It also scored 60.4% on the ARC-AGI-2 benchmark for human-like reasoning, positioning it above most comparable mid-tier models but still trailing frontier models like Anthropic's own Opus 4.6, Google's Gemini 3 Deep Think, and OpenAI's GPT 5.2.
Separately, Anthropic announced a groundbreaking partnership with Infosys, unveiled at India's AI Impact Summit in New Delhi. The collaboration aims to develop sophisticated enterprise-grade AI agents by integrating Anthropic's Claude models into Infosys's Topaz AI platform. These agents will target complex workflows in heavily regulated industries like banking, telecommunications, and manufacturing.
The partnership is a strategic response to market volatility, as shares of major Indian IT services companies recently declined following Anthropic's launch of enterprise AI tools that automate functions like legal, sales, and marketing. Infosys plans to leverage Claude Code for writing, testing, and debugging software. The company disclosed that AI-related services generated ₹25 billion (approximately $275 million), or 5.5% of its total revenue, in the December quarter.
Anthropic co-founder and CEO Dario Amodei highlighted the strategic fit, stating, "Infosys's deep experience in financial services, telecoms, and manufacturing helps bridge that gap effectively" between theoretical AI models and reliable enterprise applications. The partnership follows similar industry moves, such as HCLTech's partnership with OpenAI, and coincides with Anthropic opening its first India office in Bengaluru. India now accounts for approximately 6% of global Claude usage, ranking second only to the United States.
