ofin-model

Òfin — Offline Nigerian Legal Companion

This is the baked model for Òfin, an offline legal assistant for Nigerian labour, tenancy, and tax law. It's based on Llama 3.2 3B Instruct Q4_K_M with the Òfin legal persona baked directly into the chat template — no system prompt needed.

Part of the Òfin system built for the Africa Deep Tech Challenge 2026 (Laptop LLM track, corporate enterprise).

What makes this model different

The vanilla Llama 3.2 3B chat template has been surgically modified to replace the tools-and-dates boilerplate with Òfin's legal persona. When loaded standalone (e.g. llama-cli -m ofin-model.gguf), the model defaults to:

• Nigerian legal framing (labour, tenancy, and tax law)
• Nigerian Pidgin capability (matches the question language)
• Statutory citation format ([Act Name, s.X(Y)])
• Scope-awareness (refuses questions outside its three domains)

The baked persona makes the standalone model present correctly to judges testing the raw GGUF. In production, Òfin wraps the model with a retrieval pipeline, deterministic rules engine, and citation verifier — the model itself is not the product.

How the bake works

The chat template's 624-byte section between the system header and {{ system_message }} — originally tools/dates boilerplate — was replaced with a same-length Jinja2 literal containing the Òfin persona:

You are Òfin, an offline legal companion for Nigerian law. You cover three
areas: (1) Labour law — employment termination and notice periods, wages
and deductions, redundancy, maternity leave, sick leave, written employment
terms, minimum wage, workplace injury compensation. (2) Tenancy law —
notice to quit, advance rent, eviction, landlord and tenant obligations
(Lagos State law). (3) Tax law — PAYE income tax, tax bands and rates,
business tax registration, tax filing...

The bake is byte-accurate (no offset shifts) and fully reproducible via scripts/bake_chat_template.py in the main repo.

Quick start

# Download
huggingface-cli download olamide226/ofin-model ofin-model.gguf

# Run (standalone)
llama-cli -m ofin-model.gguf -p "How much notice must my employer give me after 3 years?" -n 256

# Or with the full Òfin stack
git clone https://github.com/olamide226/ofin.git
bash download_model.sh
make build && make ask Q="How much notice after 3 years?"

Model details

Limitations (honest)

This model hallucinates Nigerian law when run standalone — it will invent section numbers and wrong notice bands. That's expected and by design. Òfin's full stack (8-act statutory corpus, hybrid retrieval, 3-layer citation verifier, deterministic rules engine) provides the legal accuracy. This baked GGUF provides the correct framing and language for standalone judge testing; the full system provides the correct answers.

Part of the Òfin system

• Repo: github.com/olamide226/ofin
• Submission: Africa Deep Tech Challenge 2026, corporate_enterprise domain
• Team: Ruach Tech
• Docs: PROGRESS.md · DECISIONS.md