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Refer to Model Configs for how to set the environment variables for your particular deployment. To use the HuggingFace Inference APIs, you must sign up for a Pro Account to get an API Key
  1. After signing up for Pro Account, go to your user settings:
HFSettings
  1. Copy the User Access Token
HFAccessToken

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Set Danswer to use Llama-2-70B via next-token generation prompting

GEN_AI_MODEL_PROVIDER=huggingface
GEN_AI_MODEL_VERSION=https://api-inference.huggingface.co/models/meta-llama/Llama-2-70b-chat-hf
GEN_AI_API_KEY=<your-huggingface-access-token>

# Let's also make some changes to accommodate the weaker locally hosted LLM
QA_TIMEOUT=120  # Set a longer timeout, running models on CPU can be slow
# Always run search, never skip
DISABLE_LLM_CHOOSE_SEARCH=True
# Don't use LLM for reranking, the prompts aren't properly tuned for these models
DISABLE_LLM_CHUNK_FILTER=True
# Don't try to rephrase the user query, the prompts aren't properly tuned for these models
DISABLE_LLM_QUERY_REPHRASE=True
# Don't use LLM to automatically discover time/source filters
DISABLE_LLM_FILTER_EXTRACTION=True
# Uncomment this one if you find that the model is struggling (slow or distracted by too many docs)
# Use only 1 section from the documents and do not require quotes
# QA_PROMPT_OVERRIDE=weak
Note that the endpoint URL is assigned to GEN_AI_MODEL_VERSION (not GEN_AI_API_ENDPOINT), this is a quirk from the LiteLLM library. Update (November 2023): HuggingFace has stopped supporting very large models (>10GB) via the Pro Plan. The latest options are to rent dedicated hardware from them via Inference Endpoint or get an Enterprise Plan. The Pro Plan still supports smaller models but these produce worse results for Danswer.