Answer · Legal
What AI models does Harvey use?
Harvey runs on Claude (Anthropic), Gemini (Google), GPT-5.2 (OpenAI) and Harvey II (Harvey), and routes requests between them.
- Models used
- 4
- Primary model
- Claude
- Public API
- Yes
- Last checked
- 2026-09-12
Model claims are labelled by how we know them: Claude — disclosed, Gemini — disclosed, GPT-5.2 — disclosed and Harvey II — inferred. "Disclosed" means the vendor says so in public; "inferred" means it was derived from documentation, headers or release notes.
Context window: Not published.
Other stack signals: Model router, Word add-in and iManage integration.
Cite this answer
Tomorrow. “What AI models does Harvey use?” Tomorrow AI & Emerging Tech Index, AlienSquad, updated 2026-09-12. https://tomorrow.aliensquad.ai/q/what-models-does-harvey-use
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