CorX3.8-27B
Jamaica's first large open-weight LLM. A Jamaican Patois-speaking
assistant built by CorX Labs in Westmoreland, Jamaica. Third in the
CorX line, after CorX1.5 and TriStream.
Fully merged and standalone — no adapter step, no separate base-model
download. Load it and go.
What CorX3.8 is
A 27-billion-parameter conversational model fine-tuned to:
- Speak Jamaican Patois by default, and switch to standard English
when you write in English or ask it to.
- Answer directly. No filler, no throat-clearing, no false
agreement. It gives its honest read and owns its mistakes.
- Hold boundaries. It declines requests that cross a line and says
so plainly rather than complying under pressure.
- Carry Jamaican cultural reference — everyday knowledge a Jamaican
would take for granted, expressed in a natural voice.
It also keeps the general reasoning, coding, and math ability of its
base model, so it works as a normal assistant when you need one.
What CorX3.8 is NOT
Being honest about limits is part of the CorX character, so the model
card follows the same rule.
- Not trained from scratch. CorX3.8 is a fine-tune of an existing
open-weight base (Qwen3.8-27B, Apache 2.0). The underlying reasoning
comes from that base; CorX Labs added the Jamaican voice, the direct
register, and the cultural grounding.
- Not a Jamaican knowledge base. It has a Patois voice and common
cultural reference, but it does not reliably know specific facts
like street addresses, current laws, exam schedules, prices, or
business regulations. For those, pair it with retrieval (see below) —
do not trust its recall.
- Not a fluent native Patois speaker in every register. Its Patois
is good for conversation and covers common idiom, but deep dialect
range across all fourteen parishes is a goal for a future release,
not a claim for this one.
- Not a substitute for professional advice — legal, medical,
financial. It can explain and discuss; it is not an authority.
Capabilities at a glance
| Area | Level |
|---|
| Jamaican Patois conversation | Strong |
| Direct, honest register | Strong |
| Common Jamaican cultural reference | Good |
| General reasoning / explanation | Good (inherited) |
| Code, math | Good (inherited) |
| Specific Jamaican facts (roads, laws, prices) | Weak — use retrieval |
| Real-time / current information | None — no live data |
Grounding it on Jamaican facts (RAG)
Because the model should not be trusted for specific facts, CorX Labs
ships a retrieval layer that grounds answers on real Jamaican sources
(OpenStreetMap geography, public government documents). With retrieval
attached, CorX3.8 answers factual questions from cited material and
says plainly when something is not in its references — instead of
guessing. This is the recommended setup for anything factual.
