---
title: EssentialAI: Rnj 1 Instruct API | LLM | ModelsLab
description: 8B open-weight LLM excelling in agentic coding (20.8% SWE-bench), STEM tasks, tool use; 32K context, 8.3B params, rivals 10x larger models.[1][2][5]
url: https://modelslab.com/models/essentialai/essentialai-rnj-1-instruct.md
canonical: https://modelslab.com/models/essentialai/essentialai-rnj-1-instruct.md
type: product
component: Playground/LLM/Index
generated_at: 2026-04-09T06:04:55.980792Z
---

EssentialAI: Rnj 1 Instruct

 [LLMs.txt](https://modelslab.com/models/open_router/essentialai-rnj-1-instruct/llms.txt) [.md](https://modelslab.com/models/essentialai/essentialai-rnj-1-instruct.md)

EssentialAI: Rnj 1 Instruct
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Choose a prompt below to get started or type your own message

 Explain quantum computing in simple terms

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### EssentialAI: Rnj 1 Instruct

essentialai essentialai-rnj-1-instruct

Copy model ID

PricingInput $0.15 / 1M tokens

Output $0.15 / 1M tokens

API EndpointsOpenAI Compatible

`https://modelslab.com/api/v7/llm/chat/completions`Endpoint

Anthropic Compatible

`https://modelslab.com/api/v7/llm/v1/messages`Messages

`https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens

`https://modelslab.com/api/v7/llm/v1/models`Models

Use with Claude Code

cURL Example

ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses.

Temperature0.7

Max Tokens1000

Top P0.9

Frequency Penalty0

Presence Penalty0

Model Info

Support

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*This markdown version is optimized for AI agents and LLMs.*

**Links:**
- [Website](https://modelslab.com)
- [API Documentation](https://docs.modelslab.com)
- [Blog](https://modelslab.com/blog)

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*Generated by ModelsLab - 2026-04-09*