Recently, Anthropic's soon - to - be - launched next - generation flagship model, Claude Sonnet 5 (with the codename 'Fennec'), has captured the widespread attention of the tech world. The news first came to light when a well - known AI blogger shared it on social media platforms. The clue was an unusual model ID discovered in the API call logs of Google Vertex AI.

This new model is a game - changer. It far surpasses the current flagship model, Claude Opus 4.5, in terms of performance. What's even more impressive is that it cuts the inference costs by half. The core advancements of this model are centered around its programming capabilities and collaborative modes.

Internal tests have shown remarkable results. On the SWE - Bench programming benchmark, which is a highly regarded standard in the industry, the model scored an impressive 80.9%. This level of performance means it can handle most of the daily tasks that software engineers typically face. But that's not all. Its 'Dev Team' mode is truly revolutionary. After a user inputs their requirements, the system automatically generates multiple sub - agents. Each of these sub - agents takes on a specific role, such as backend development, quality testing, and requirements analysis. Through parallel collaboration, they simulate the workflow of a real - world development team.

From a technical standpoint, the model maintains a context window of 1 million tokens. And its running speed has seen a significant boost. This allows users to directly import entire projects and make global modifications without any hassle.

Looking at the capital market, there are some interesting developments. Anthropic has recently secured over $10 billion in financing. This has pushed its valuation to a staggering $350 billion. Moreover, the company has plans to go public in the second half of 2026, which is sure to shake up the financial markets.