# Harvey — Sonnet 4.5, Now Live in Harvey

- Company: Harvey (harvey.ai)
- Announced: 2025-09-30T15:30:00+00:00
- Category: availability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://www.harvey.ai/blog/sonnet-4-5-now-live-in-harvey
- Record: https://forck.live/items/17668-sonnet-4-5-now-live-in-harvey
- Subject: Harvey
- Models affected: Claude 4.5 Sonnet, Sonnet 4.5

Harvey has made Anthropic's Claude Sonnet 4.5 available to its customers. The model, trained with an emphasis on code generation and numerical analysis, achieved the highest score yet for the Claude family on Harvey's BigLaw Bench evaluation suite at 89.55%. Harvey is rolling out Sonnet 4.5 in the model selector to eligible clients in the US and EU.

## Evidence

Verbatim from https://www.harvey.ai/blog/sonnet-4-5-now-live-in-harvey:

> Today we are making Claude Sonnet 4.5 available in Harvey.

---

Record: https://forck.live/items/17668-sonnet-4-5-now-live-in-harvey
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md