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Collinear

Helping teams fearlessly ship AI

3 open rolesAI InfrastructureSunnyvale, California

About Collinear

Collinear builds SimLab, a platform that simulates realistic environments to find capability gaps in AI agents and generate synthetic data to close them. It serves frontier labs and AI-native companies.

Collinear builds SimLab, a simulation platform that allows researchers to spin up realistic environments and run AI agents through complex tasks. The platform surfaces failure modes under real-world conditions and helps teams identify capability gaps in their agents.

Frontier labs and AI-native companies use SimLab to stress-test their most advanced agents. Collinear then closes the loop by generating targeted synthetic data to retrain models, providing measurable quality lift on real-world metrics. The company focuses on rigorous, long-horizon simulation and programmatic verification as an alternative to simply scaling models.

Collinear is a small, elite team focused on building the data engine for frontier AI, bridging research and production engineering. They iterate across the full ML stack, including post-training runs (CPT, SFT, RL) to deliver frontier performance on open-source models.

AI AgentsSimulationSynthetic DataEvaluationReinforcement LearningPython

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