Xolotl (formerly Strata-DSV4.1): DeepSeek-V4.1-Flash, all 552B, on one gaming PC (RTX 4090 + 90 GB RAM) at ~27 tok/s, plus GLM-5.3-Flash, Qwen3.8-Flash-Next and Qwen3.8-27B. A heavily extended fork of Strata: MoE experts tiered across VRAM, pinned RAM and NVMe; OpenAI + Anthropic API.
Xolotl, a C++ engine that extends Strata, serves several large models through an OpenAI/Anthropic-compatible server, and its README reports a decode speed of 26.8 tok/s for DeepSeek-V4.1-Flash 552B on an RTX 4090.