OpenAI Blog
OpenAI Five, a team of five neural networks, has begun defeating amateur human teams at Dota 2. The system plays the complex real-time strategy game with five AI agents working together as a coordinated unit. This demonstrates progress in training AI systems to handle multi-agent coordination and long-term strategic planning in competitive environments.
Our team of five neural networks, OpenAI Five, has started to defeat amateur human teams at Dota 2.
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TLDRocket
21 July 2026
The open-weight AI model market hit an inflection point today as Alibaba and Kimi released trillion-parameter competitors that challenge the closed-model orthodoxy—just as Washington moved to restrict them. Alibaba's Qwen 3.8 Max (2.4 trillion parameters) and Kimi K3 (2.8T) are going open-weight, with K3 ranking first on Frontend Web App Arena and fourth on agentic benchmarks, signaling that scale and transparency can coexist. The timing matters: while U.S. policymakers weigh layered restrictions on Chinese open models, technical experts are pushing back hard, arguing that closed gardens actually hurt security and competition more than they help. The real fragmentation risk isn't technical—it's regulatory.
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