Nairobi delivery centre, serving clients on five continents
Nairobi delivery centre, serving clients on five continents
Model Evaluation & Safety
Careful human judgement for model training and evaluation.
Trained, calibrated evaluators whose comparative judgements are consistent enough to train reinforcement learning from human feedback.

100%
Of judgements come with a written rationale
Overview
Evaluators rank outputs, write preference comparisons and score responses against your rubric for helpfulness, accuracy, tone, instruction-following and safety.
Every judgement comes with a short written rationale explaining why one answer beat another.
Evaluators are calibrated against reference examples before they start, then checked against hidden reference items and senior reviewers.
Anyone who drifts is re-calibrated quickly, so your reward signal stays clean.
Pools are built by domain: general, coding, maths and reasoning, creative writing, dialogue and safety-sensitive content.
At a glance
Targets are agreed per client and written into your SLA.
What's included
Take one piece or all of it. Every item runs to documented procedures with an owner, a target and weekly reporting.
Comparing responses and choosing the better one, with reasons.
Rating responses on your dimensions, such as accuracy, tone and safety.
Judging whole conversations, not single replies.
Writing ideal answers for supervised fine-tuning datasets.
Diverse, realistic prompts that test real-world use.
Comparing model versions before release decisions.
How it fits together
Your model generates responses, trained evaluators compare and score them, and those judgements become the reward signal that shapes the next model version.

How it works
A supervised path from first call to a fully managed team, usually live within 2 to 3 weeks.
Rubric review
We study your guidelines and flag ambiguities before work begins.
Calibration
Evaluators score reference items until agreement targets are met.
Production
Daily evaluation with hidden checks and senior review.
Insight
Reports on common failure types to guide your next training run.
Who it's for
Platforms
Your team works inside the systems you already use. Don't see yours? We learn custom tools too.
FAQ
Something else on your mind? Our team replies within one working day.
Speak to a specialist
Tell us your volumes and goals. We reply within one working day with a suggested team and price.
Get a free quoteCalibration before production, hidden reference items during work, and re-calibration whenever the rubric changes.
Yes, with specialist pools holding computer science, engineering and mathematics degrees.
Only where the project requires it, with consent, exposure limits and wellbeing support.
A pilot pool can usually be ready within a few days of receiving your guidelines.
Related AI services
Model Evaluation & SafetyEvidence-based safety and bias testing for AI models.
Data & AnnotationAccurate training data, labelled by people who follow the rubric.
Conversational & ModerationContent moderation with judgement, consistency and care.

A no-obligation consultation to design your team, hours and price. Most quotes are back within one working day.