At Essential AI, we're building an open platform to democratize frontier AI capabilities and accelerate breakthroughs globally through collaborative science.
Joined August 2023
- Tweets 80
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- Followers 6,153
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15 Photos and videos
Pinned Tweet
6 Dec 2025
Today, we’re excited to introduce Rnj-1, @essential_ai's first open model; a world-class 8B base instruct pair, built with scientific rigor, intentional design, and a belief that the advancement and equitable distribution of AI depend on building in the open.
We bring American open-source at par with the best in the world.
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Mar 7
Rnj-1 has outperformed other open models in its weight class in the largest open-source AI initiative in telecom to-date🚀
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Mar 7
Farbod Tavakkoli from @ATT and @DiamosGreg from @tensorwave demonstrated world-class efficiency at scale, achieving exceptional utilization across 256 @AMD MI325X GPUs on TensorWave using ScalarLM.
This is a victory for American open weights models.
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Mar 7
Blog → essential.ai/research/rnj-1
Model → huggingface.co/EssentialAI/r…
We have more exciting updates coming soon. Stay tuned!
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23 Dec 2025
[1/5]
We thank the community for their feedback on Rnj-1. We’d like to announce a few updates to Rnj-1-instruct based on what we heard:
- Resolving premature truncation of generations and improved instruction following.
- Instructions for 128k context length extrapolation.
- Updated evals, baselines, and model generations for reproducibility.
Details follow 🧵
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23 Dec 2025
[4/5]
Our tables have been updated with the Olmo-3-7B-Instruct baseline, and we have added post-processing improvements to our STEM evals, boosting performance. For reproducibility, we release our eval prompts and generations.
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23 Dec 2025
[5/5]
Check it out on Hugging Face🤗:
Model → huggingface.co/EssentialAI/r…
GGUF → huggingface.co/EssentialAI/r…
Evals → huggingface.co/collections/E…
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11 Dec 2025
The momentum is real. Let's go! 🚀
11 Dec 2025
Rnj-1-Instruct is now the #1 trending text generation model on HF!
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10 Dec 2025
We are now the #1 trending text-gen <256B size model on HuggingFace!!
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9 Dec 2025
Proud to carry the spirit of Ramanujan with rnj-1: honoring the great minds who showed how curiosity reshapes the world. The lineage of deep thinking is part of our mission. Essential proud.
9 Dec 2025
Behind the scenes at Essential: long hours, tough problems, and a team driven by an unsatiable desire to build.
What keeps us going isn’t noise - it’s the scientific discipline. The work demands focus, rigor, and a willingness to push through uncertainty.
Proud to work with this special team @essential_ai @ashVaswani
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Essential AI retweeted
6 Dec 2025
Try Rnj-1 Instruct now on Together AI together.ai/models/rnj-1-ins…
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Essential AI retweeted
6 Dec 2025
Highlights:
👉 Dominant on SWE-bench, BFCL, and Enamel
👉 Strong tool use and function calling
👉 32K context window
👉 Apache 2.0 licensed, fully open weights
👉 Trained on 8.4T tokens with Muon optimizer
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Essential AI retweeted
6 Dec 2025
Introducing Rnj-1 Instruct from @essential_ai, an open-source 8B model engineered for agentic coding and STEM tasks. AI natives can now use Rnj-1 Instruct on Together AI and benefit from reliable inference for production-scale software engineering and scientific workflows.
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Essential AI retweeted
6 Dec 2025
We are beyond thrilled to share our first flagship models, Rnj-1 base and instruct 8B parameter models. Rnj-1 is the culmination of 10 months of hard work by a phenomenal team, dedicated to advancing American SOTA OSS AI.
Lots of wins with Rnj-1.
1. SWE bench performance close to GPT 4o.
2. Tool use outperforming all comparable open source models.
3. Mathematical reasoning (AIME’25) nearly at par with GPT OSS MoE 20B.
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6 Dec 2025
Today, we’re excited to introduce Rnj-1, @essential_ai's first open model; a world-class 8B base instruct pair, built with scientific rigor, intentional design, and a belief that the advancement and equitable distribution of AI depend on building in the open.
We bring American open-source at par with the best in the world.
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