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project-lyra/.env.example
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serversdown f3530cf4ae feat: separate CHAT_MODEL (gpt-4o) for persona fidelity
Mid-size models (gpt-4o-mini, qwen2.5-14b) resist persona instructions —
help-desk closers and feelings-disclaimers leak through regardless. Route live
chat to a stronger model while keeping bulk consolidation cheap:

- config: CHAT_MODEL (default gpt-4o), distinct from CLOUD_MODEL (gpt-4o-mini)
- llm.complete gains a `model` override; chat.respond uses chat_model on cloud,
  consolidation paths keep cloud_model
- persona: reword the "no sign-off" rule so genuine questions are welcome and
  only reflexive customer-service closers are discouraged

Verified: on gpt-4o she owns her mood without disclaimers and drops most
help-desk tails — clearly more in-character than mini/qwen.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-16 21:05:47 +00:00

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# Local backend (Ollama) — free, private. Point this at your home-lab Ollama.
LOCAL_BASE_URL=http://localhost:11434
LOCAL_MODEL=qwen2.5:7b-instruct
# MI50 backend — OpenAI-compatible llama.cpp server on the home-lab GPU box (CT202).
MI50_BASE_URL=http://10.0.0.42:8080/v1
MI50_MODEL=local-gpu
# Cloud backend (OpenAI) — higher quality, costs money.
OPENAI_API_KEY=
CLOUD_MODEL=gpt-4o-mini # cheap model for bulk consolidation (summaries/profile/etc.)
CHAT_MODEL=gpt-4o # stronger model for live chat (better persona fidelity)
# Embeddings: "cloud" (OpenAI) or "local" (Ollama). A database is tied to whichever
# backend created it — don't switch this against an existing DB (vector spaces differ).
EMBED_BACKEND=cloud
EMBED_MODEL=text-embedding-3-small
LOCAL_EMBED_MODEL=nomic-embed-text
# Backend used to compact old sessions into summaries ("local" keeps it free).
SUMMARY_BACKEND=local
# Where Lyra stores her memory.
LYRA_DB_PATH=data/lyra.db