EssentialAI: Rnj 1 Instruct
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 across multiple programming languages, tool-use workflows, and agentic execution environments (e.g., mini-SWE-agent).
Undisclosed
Parameters
33K tokens
Context Window
Proprietary
License
Dec 7, 2025
Released
๐ฐ Pricing
Input
$0.15
per 1M tokens
Output
$0.15
per 1M tokens
API Available
This model is accessible via API for integration into your applications.
โญ Related Models
Claude 3.5 Sonnet
Anthropic
The model that defined a generation. Fast, smart, and incredibly capable across coding, analysis, and creative tasks.
Claude 3.5 Haiku
Anthropic
Ultra-fast and cost-effective. Best for high-volume tasks where speed matters more than peak intelligence.
GPT-4o Mini
OpenAI
Compact and affordable. Surprisingly capable for its price point, ideal for high-volume applications.