Post-Training

Intelligence built on your data, owned by you.

We work alongside your team to post-train dedicated models that beat the frontier across quality, latency, and cost.

Frontier quality, at a fraction of the cost

When your inference bill already exceeds what it would cost to host and train your own model, post-training is the cheaper path.

In-house frontier capabilities

We build the first production model with your team in the room, then hand over the recipe so they are equipped to run the next round themselves.

A compounding advantage that you own

A frontier model is trained to be good at everything. Your models should be trained to be right about your business. That’s quality that can’t be bought with the same vendor contract.

Training frontier models since 2021

5+ years of training runs

With the release of Jurassic-1, we became the second company in the world to release an LLM and have been pre- and post-training models since.

1 stack, built in-house

In-house frameworks and tools ranging from data synthesis to training schedulers, all battle-tested and optimized.

11 papers published

We’ve amassed our own pre-training IP library: data mixtures, architecture, scaling. We know the art, not just the recipe.

Olivier Theulle

Chief of E-Commerce & Digital

“Partnering with AI21 allows us to take the next step: applying AI where it creates the most value for our customers, reaffirming the trust at the heart of our brand and extending it into the era of AI-driven services.”

Your data is protected.

AI21 is committed to the highest international privacy and security regulations. Securing your organization’s data and adhering to compliance requirements is top of mind.

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