Solar Open 2
Efficient 250B MoE model for agents, coding, and long-context work
...The model supports a native 1M-token context window and uses NoPE instead of rotary positional encoding, reducing long-context KV-cache requirements. Solar Open 2 includes 321 experts, with eight routed experts plus one shared expert activated per token. It was pretrained on roughly 12 trillion tokens and supports English, Korean, and Japanese. Agent capabilities include multi-step reasoning, tool calling, MCP tools, and end-to-end task execution. It also offers direct-response and high-reasoning modes and supports deployment through Transformers, vLLM, SGLang, and quantized variants.