Custom AI models for the enterprise · New York · LondonSecurityResearchContact sales
Finetune the World

Your work is specific. Your AI model should be too.

We design, train and run custom language models for enterprises: measurably more accurate on your work than off-the-shelf AI, a fraction of the cost to run, and owned entirely by you.

Scoped against a written metricYour cloud, your weights6.5 weeks median to production
Insurance claims extraction
Frontier API
Our 8B model
Field accuracy
86.9%
94.7%
Cost per 1,000 claims
$11.20
$0.31
Median latency
3.4 s
0.18 s
Data leaves your cloud
Yes
Never
Held-out set of 2,400 claims, adjudicated by senior adjusters. Client: a top-3 global insurer.
214

custom models shipped to production for enterprise clients

11×

median reduction in inference cost versus the API it replaced

+23 pts

median accuracy gain over the untuned base model, on held-out data

96%

of clients commission a second model within a year

A prompted generalist is a starting point. A trained specialist is an asset.

On a narrow task you run a million times a month, a model trained on your own labels wins on accuracy, cost, latency and control. And the lead grows with every retraining cycle, because it learns from data nobody else has.

Read our open experiment: a 0.5B model from 19% to 97% exact match on unseen formats →

Field accuracy on held-out claims

Open 8B, untuned
72.8%
Open 70B, prompted
78.2%
Frontier API, zero-shot
81.4%
Frontier API + retrieval
86.9%
Our 8B, fine-tuned
94.7%

Field-level exact match, 2,400 claims, two-adjuster adjudication. Costs at list price.

A clear engagement, with a decision point every two weeks.

The success metric goes into the contract before we touch a GPU. If the feasibility read says fine-tuning is the wrong tool, we tell you, and you keep the evaluation suite.

Phase
Wk 0Wk 1Wk 2Wk 3Wk 4Wk 5Wk 6Wk 7Wk 8
FrameMetric, baseline, ship bar
DataMining, annotation, synthetic
TrainBake-off, SFT, preference rounds
ProveHeld-out evals, red-team, sign-off
Ship & runDeploy, monitor, retrain
PhaseGo / no-go decisionMedian: 6.5 weeks to production traffic

The full engagement playbook →

Results our clients put in front of their boards.

Names withheld under NDA. Every figure is measured on a frozen held-out set the client approved before training.

−68%
false positives in adverse-media screening

A 14B model analysts trust, running fully on-premises

Fine-tuned on 61,000 analyst dispositions and aligned on 9,000 disagreement pairs. Passed model-risk validation first time.

Fortune 100 bank · Financial crime
14×
lower cost per coded encounter

ICD-10 suggestions inside the health system’s own environment

Distilled from a frontier teacher into a 7B model and tuned on coder feedback. 92.3% top-3 accuracy.

Top-5 US health system · Revenue cycle
58%
of tier-1 tickets resolved without a human

A support agent that knows when to hand off

RL against a tool-call verifier and an escalation reward model. CSAT up 11 points.

Top-10 SaaS platform · Support

All results and methodology →

What would a specialist model save you?

Set your current volume. The estimate uses the cost model from our break-even research; your briefing gets a precise number.

Assumes a fine-tuned 8B model on dedicated GPUs at 35% average utilisation, including operations and quarterly retraining.

Estimated annual savings
$0
Current annual spend$0
Specialist model, annual run cost$0
Get a tailored quote →
Two colleagues reviewing printed results at a long oak table in a sunlit meeting room with green chairs
“

We had spent nine months on prompt engineering. They delivered a smaller model that was better on every metric we cared about, and the evaluation harness to prove it to our risk committee.

VP Machine LearningA top-3 global insurer

Questions buyers ask us

Can’t find your question? Ask a senior engineer.

When does a fine-tuned model beat a frontier API?

When the task is narrow, repeated at volume and has a definable notion of correct: extraction, classification, routing, structured drafting, tool-calling agents. In those cases a fine-tuned 3–14B model routinely matches or beats a prompted frontier model at a fraction of the cost and latency. When knowledge changes daily, start with retrieval. Our fine-tuning vs RAG guide walks through the decision.

Who owns the model?

You do. Every engagement ends with the trained weights, adapters, training configuration, data lineage and evaluation harness transferred to you. No runtime dependency on us and no per-token royalty.

Does our data leave our environment?

It doesn’t have to. We train inside your VPC on AWS, Google Cloud, Azure or Oracle Cloud, on your Databricks workspace, or on-premises. See Security.

What does an engagement cost?

It depends on the task, how much labelled data already exists, the training methods the evaluation calls for and where the model must run. We scope every engagement against a written success metric and send a tailored proposal after a briefing; talk to us to get one. GPU compute is passed through at cost, and the underlying economics are public in our compute cost model.

Which base models do you work with?

Any open-weight family with a suitable licence (Llama, Qwen, Mistral, Gemma, Phi, DeepSeek and others) from 0.5B to 400B+ parameters, plus hosted fine-tuning APIs when that is the right call. We choose by eval bake-off, not habit.

How long until a model is in production?

Median six and a half weeks from kickoff to production traffic. A feasibility sprint answers “will this work, and by how much?” in two weeks.

Bring us one task. We’ll show you what a specialist model can do.

A 45-minute briefing with a senior research engineer. You leave with a feasibility read, a data plan and a scoped proposal, whether or not you hire us.

Book a briefing →