Rnj 1 Instruct
Released by EssentialAI in 2025, Rnj 1 Instruct is an chat model. Rnj-1 is an 8B-parameter, dense, open-weight model family developed by Essential AI and trained from scratch with a focus on programming, math, and scientific reasoning. The model demonstrates strong performance...
by EssentialAI · 33K token context window
Best for
- low-latency chat and routing
- request routing and triage
- text classification
Ways to use Rnj 1 Instruct in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your EssentialAI API key. osFoundry discovers Rnj 1 Instruct automatically — assign it to a Maestro role (router, direct, orchestrator, or fallback) in the Pipeline tab and it is live in every chat. Your key, your provider account — no token markup.
Use it in a Room App
Room Apps declare AI features in their manifest, then call them with invokeAI:
import { invokeAI } from '@osfoundry/app-sdk'
// 'summarize' is an AI feature declared in your app manifest.
const result = await invokeAI('summarize', userText)
Call it from your own apps
Once a model is wired into your workspace you can host it as an API and reach it from your own services, scripts, or CI — outside osFoundry.
Run Rnj 1 Instruct yourself
Rnj 1 Instruct is also available as open weights — self-host it for full data control and no per-token cost. See that page for GPU requirements and a cost comparison against API pricing.
Rnj 1 Instruct vs similar models
Licence
Hosted — usage subject to provider terms — Hosted-only model — usage governed by the provider's API terms. Bring your own provider key.
No weights distributed; usage subject to provider terms.
Frequently asked about Rnj 1 Instruct
How much does Rnj 1 Instruct cost?
Rnj 1 Instruct is metered at $ 0.150 /1M for input, and $ 0.150 /1M for output. Bring your own EssentialAI API key — osFoundry passes through provider pricing without markup.
Can I use Rnj 1 Instruct commercially?
Commercial use is allowed with conditions. Hosted-only model — usage governed by the provider's API terms. Bring your own provider key. No weights distributed; usage subject to provider terms.
What is the context window of Rnj 1 Instruct?
Rnj 1 Instruct supports a 33K token context window.
Can I run Rnj 1 Instruct locally?
No — Rnj 1 Instruct is hosted only and accessed via the EssentialAI API. An open-weights equivalent is available to self-host — see the cross-link above.
What is Rnj 1 Instruct best at?
Rnj 1 Instruct is well-suited to low-latency chat and routing, request routing and triage, text classification.
How do I use Rnj 1 Instruct in osFoundry?
Paste your EssentialAI API key in the key dialog (or deploy the open weights for self-hostable models), assign Rnj 1 Instruct to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by EssentialAI on December 7, 2025. Source: https://openrouter.ai/essentialai/rnj-1-instruct