# Harvey — The Brief: May 2025

- Company: Harvey (harvey.ai)
- Announced: 2025-05-06T15:28:40.866000+00:00
- Category: capability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://www.harvey.ai/blog/the-brief-may-2025
- Record: https://forck.live/items/17711-the-brief-may-2025
- Subject: Harvey
- Models affected: GPT-4.1

Harvey rolled out GPT-4.1 as the primary model for Assist mode and Vault, and enhanced Draft mode with a reasoning model, improving response quality, output length, and knowledge cutoff. The company also introduced Vault Knowledge Bases for creating internal knowledge bases, along with various UI and workflow improvements.

## Evidence

Verbatim from https://www.harvey.ai/blog/the-brief-may-2025:

> We rolled out GPT-4.1 as the primary model powering Assist mode and Vault, improving baseline response quality, output length, and knowledge cutoff (May 2024 instead of October 2023). Draft mode has also been enhanced with a reasoning model, now delivering longer outputs, fewer hallucinations, better legal reasoning, and a more recent knowledge cutoff (May 2024 instead of October 2021).

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Record: https://forck.live/items/17711-the-brief-may-2025
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md