ai-agents-llm-configuration-llamacpp-with-llama-3-model-produces-nonsensical-o-ef27f32e

THEN Set `rope_freq_base=500000` in the LlamaCpp constructor or via `model_kwargs` to override LangChain's default hardcoded RoPE frequency base. Ensure the parameter is passed directly to llama.cpp, as LangChain's defaults (rope_freq_scale=1.0, rope_freq_base=10000) may override model metadata. For custom context sizes, recalculate the appropriate rope parameters.

llm = LlamaCpp(
    model_path="path/to/model.gguf",
    n_ctx=8192,
    rope_freq_base=500000,
    ...
)