Harvey – Building in Active Guardrails With GPT-5.2
How we’re using GPT-5.2 to create proactive guardrails for complex legal work.
We are excited to announce the launch of GPT-5.2 and its availability on the Harvey platform. This new model represents a significant evolution in how AI interacts with complex legal tasks, combining frontier reasoning with a stronger inherent understanding of its own operational boundaries.
During the early-access period, GPT-5.2 demonstrated impressive performance across Harvey’s core product surfaces and our BigLaw Bench evaluation (89.8%). What stands out, though, is not just the model’s raw performance, but its capability awareness — the model is much better at knowing what it can do, what it can’t do, and when it needs more information before moving forward.
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