Announcing our $2m fundraise to turbocharge LLM evaluation!
Read more here

LLM app evaluation you can trust.

Evaluate the accuracy & quality of complex, LLM-based applications without having to rely on LLM as a judge or manual 'vibe-checks'.

Working with leaders from companies like:

We get it, evaluating the accuracy & quality of LLM apps is tough.

You need precise, consistent & completely customizable metrics that you can 100% rely on. LLM-based evals can't do this.

Our custom models give you precise, consistent evals you can rely on.

Our models leverage a unique architecture and are custom-trained for evals so that they can be guaranteed upon to get the scores right.

build around...

Unique, research-backed approach

Composo Align is the result of our extensive R&D and the latest research from the leading AI labs.

Testing in progress...

Completely customizable

Composo Align is designed to evaluate any custom criteria & can be fine-tuned specifically for your use case.

Easy to use

Seamlessly integrate Composo via our API or use our no-code evaluation platform.

learning curve

Why companies choose Composo

Composo is hyper-personalised evaluation that you can rely on.

Simple set up

Integrate Composo via API with just a few lines of code. No need for special libraries or SDKs.

Data security first

We're well-used to complex, sensitive use cases & working with enterprises in high-stakes domains such as finance, legal, healthcare & defence. Let us know your requirements.

Accurate & deterministic

Our evals give you continuous scores from 0 - 1 on any custom criteria, that are explainable, deterministic & always right.

Any application (inc. agents)

Composo works with anything from chatbots & copilots to code generation & unstructured data extraction. We also support RAG, agents, tool usage and function calling.

Industry leading research

We go beyond using LLMs as judges and ground-truth comparisons, incorporating state-of-the-art hallucination detection and custom-trained evaluation models to deliver the best performance.

Evals that learn to your domain

Our models learn to emulate the judgement of your human experts in even the most complex domains. Specifically designed to work with minimal data upfront.

A smooth, yet
powerful workflow

all your apps

Our Blog

Our Team

seb

Sebastian Fox

CEO

Ex-McKinsey & QuantumBlack
Oxford University

Hao

Haoguo Wu

Founding Engineer

Ex-Tesla & Alibaba Cloud
Imperial College London

luke

Luke Markham

CTO

Ex-Graphcore ML Engineer
Oxford University

Start using Composo today

With evaluations built specifically for complex, highly specific domains, we make
it easy to deploy LLM applications with 100% confidence.