Release Notes
Model Availability: GPT-5
Use GPT-5 in Assistant, Vault, and Workflow Builder—unlocked via the model selector for faster reasoning, smarter drafting, and advanced multi-step orchestration.
Release Date
Aug 7, 2025
Categories
Model Updates
We’re excited to announce that GPT-5 is now available in Harvey’s model selector, across Assistant, Vault, and Workflow Builder.
Released today by OpenAI, GPT-5 brings meaningful improvements in reasoning, drafting, and agent orchestration. It is the first model in Harvey that shows strong potential to both research complex legal issues and draft high-quality work product in a single flow.
What’s new with GPT-5:
- Improved legal reasoning: Outperforms prior models on Harvey’s BigLaw Bench evaluation suite
- More controllable and context-aware drafting
- Longer, more reliable outputs for complex workflows
- Better tool use for navigating multi-step problems
GPT-5 can now:
- Review internal documents
- Search regulatory changes
- Compare them for inconsistencies
- Draft a tailored memo recommending updates
Access & availability:
- Available today in the Model Selector (enabled via Access Control & Permission Management)
- US and EU workspaces only for now — support for AU to be shared in the coming weeks
- If you don’t have access to the model selector yet, contact your admin or Customer Success Manager
Read more about GPT-5 in Harvey in our blog post.