Xing4.0 29B A4B

Where to use it for free

• Free API on OpenRouter: model id xingchen-agi/xing4.0-29b-a4b:free. Try it side by side · OpenRouter page
• Download and run it at home: official weights · GGUF files for Ollama and LM Studio

New: waiting for Arena votes

Released on 16 Sept 2026. Arena has not voted on this model yet. As soon as it does, the model moves into the ranking automatically, usually the next night. Until then you can still check its size, memory needs and speed below, and try it for free.

Speed on popular hardware

Estimate at 4-bit with 32K context, 64 GB of DDR5 for offload. Speed ≈ memory bandwidth × 78% ÷ data read per token, plus a fixed cost per token, calibrated on 44 real llama.cpp tests; typical error about ±10%. Compare all GPUs.

GPU memory needed

Weights + context cache (from the model's architecture) + runtime. Quality: increase in perplexity against the full model, from llama.cpp tests, scaled by model size. Simulate your own setup.