SiliconFlow launches Hy4 preview: a 770B open-source model with 1M context

硅基流动上线开源模型 Hy4 preview，770B 总参数、1M 上下文

SiliconFlow has onboarded Hy4 preview, a 770B-parameter open-source model that activates 49B per token and supports a 1M context window. It's released under Apache 2.0 and targets coding, analysis, and complex real-world tasks. Pricing is listed at $0.834 per 1M input tokens, $2.501 per 1M output tokens, and $0.042 for cached tokens. The post doesn't disclose training data, benchmarks, or real-world latency, so I'd hold off on getting excited.