Training reasoning models aligned with your goals.
Training reasoning models aligned with your goals.
TrainLoop is a post-training research and product lab. We develop algorithms, methods, and tooling to reliably train, steer, and deploy specialized AI systems.
TrainLoop is a post-training research and product lab. We develop algorithms, methods, and tooling to reliably train, steer, and deploy specialized AI systems.
About Our Lab
We’re creating AI systems that are as unique and specialized as the humans that guide them.
We’re creating AI systems that are as unique and specialized as the humans that guide them.
In addition to research, we collaborate with organizations possessing unique data to train state-of-the-art reasoning models on their tasks.
In addition to research, we collaborate with organizations possessing unique data to train state-of-the-art reasoning models on their tasks.
OUR FOCUS
Four Key Research Directions
Four Key Research Directions
Four Key Research Directions
Across these four research directions, we're training models to be more capable, interpretable, and aligned with human objectives.
Across these four research directions, we're training models to be more capable, interpretable, and aligned with human objectives.
Life Sciences
Life Sciences
Modeling biological reasoning for pharmaceutical and biotech companies
Continual Training
Continual Training
Training methods that avoid catastrophic forgetting
Continual Training
Training methods that avoid catastrophic forgetting
Information Theory
Information Theory
Capacity‑aware objectives that promote stable, interpretable reasoning.
Evaluation & Interpretability
Evaluation & Interpretability
Tools to understand both external behavior and internal symbolism of models.
Evaluation & Interpretability
Tools to understand both external behavior and internal symbolism of models.
OUTCOMES
Our models frequently achieve state of the art or pareto-optimal performance on their task.
Our models frequently achieve state of the art or pareto-optimal performance on their task.
Our models frequently achieve state of the art or pareto-optimal performance on their task.
MODELS
Model Areas
Model Areas
Model Areas
We partner with companies from various industries to identify high-impact opportunities for post-training.
We partner with companies from various industries to identify high-impact opportunities for post-training.
BIO
Biological Reasoning Models
Trainloop partners with pharmaceutical and biotech companies to accelerate drug development with proprietary foundation models for diagnosis and treatment response
BIO
Biological Reasoning Models
Trainloop partners with pharmaceutical and biotech companies to accelerate drug development with proprietary foundation models for diagnosis and treatment response
BIO
Biological Reasoning Models
Trainloop partners with pharmaceutical and biotech companies to accelerate drug development with proprietary foundation models for diagnosis and treatment response
RELIABILITY
Agents for High Risk industries
We train highly reliable agents across financial services and logistics, significantly improving decision accuracy in mission-critical workflows
RELIABILITY
Agents for High Risk industries
We train highly reliable agents across financial services and logistics, significantly improving decision accuracy in mission-critical workflows
RELIABILITY
Agents for High Risk industries
We train highly reliable agents across financial services and logistics, significantly improving decision accuracy in mission-critical workflows
MULTIMODALITY
Multimodal reasoning
We've delivered purpose-built multimodal reasoning systems for complex image understanding and document abstraction
MULTIMODALITY
Multimodal reasoning
We've delivered purpose-built multimodal reasoning systems for complex image understanding and document abstraction
MULTIMODALITY
Multimodal reasoning
We've delivered purpose-built multimodal reasoning systems for complex image understanding and document abstraction
COLLABORATION PROCESS
Research-to-Production Workflow
Research-to-Production Workflow
Research-to-Production Workflow
A structured approach to co-defining objectives, advancing models, and sustaining performance in production.
A structured approach to co-defining objectives, advancing models, and sustaining performance in production.
01
Identification of
Research Objectives.
We jointly define research goals based on your unique data and technological strengths.
02
03
01
Identification of
Research Objectives.
We jointly define research goals based on your unique data and technological strengths.
02
03
01
Identification of
Research Objectives.
We jointly define research goals based on your unique data and technological strengths.
02
03
BLOGS
Recent Publications
Read through our key findings, insights, and practical learnings from building and deploying custom models.
Read through our key findings, insights, and practical learnings from building and deploying custom models.
PATHOS
Can We Train a Model
in One Step?
Group Relative Policy Optimization (GRPO) is often the first tool we reach for when training a model for a customer via reinforcement learning. GRPO is an online training loop. You generate from the current policy, score…
Group Relative Policy Optimization (GRPO) is often the first tool we reach for when training a model for a customer via reinforcement learning. GRPO is an online training loop. You generate from the current policy, score generations within...
Multiple Contributors
10 min read
LORA TRAINING DYNAMICS
Learning GSM8K is Inherently
Low-Rank
As an effort to work with the garage door up, this is a collection of some interesting discoveries we made while trying to study how new skills are internalized during finetuning. This is not meant to be a full-fledged…
Multiple Contributors
5 min read
PARTNERSHIPS
We collaborate with organizations possessing unique datasets or specialized technological resources.
These partnerships seek to leverage these data advantages into academically rigorous, specialized AI models.
PARTNERSHIPS
We collaborate with organizations possessing unique datasets.
We collaborate with organizations possessing unique datasets.
To explore a training partnership, please submit this form.
To explore a training partnership, please submit this form.
Training reasoning models aligned with your goals.
Email: founders@trainloop.ai
LEGAL
© 2026 TrainLoop. All rights reserved.
North Beach, San Francisco, CA
Training reasoning models aligned with your goals.
Email: founders@trainloop.ai
LEGAL
© 2026 TrainLoop. All rights reserved.
North Beach, San Francisco, CA