Release Notes
GPT-5.4 Now Available in Harvey
GPT-5.4 is now available in Harvey’s Model Selector across Assistant, Vault, and Workflow Builder.
What’s New
We’ve added GPT-5.4 to the model selector in Harvey to offer greater flexibility in how you approach complex work in Harvey.
An early evaluation of strengths include:
- Getting straight to the task at hand
- Intuitive structure
- Appropriate level of detail
Learn more: Review our evaluation of the model in our blog post for GPT-5.4.
Why It Matters
Adding GPT-5.4 expands the range of models available in Harvey, giving advanced users more flexibility.
For most workflows, Auto mode continues to select the right model for you, but model selection is available if you want more direct control.
This update ensures Harvey adapts to different types of legal work without changing how you normally use it.
How to Use
Open Model Selector in Assistant, Vault, or Workflow Builder to select GPT-5.4 from the list of models. Admins can manage access to the model selector through Settings > Models.
Important: GPT-5.4 is only available for selection through the Model Selector, with GPT models enabled. If you don’t see the Model Selector with GPT models, contact your workspace admin.