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Google releases Gemini 2.5 Pro, a thinking model that debuts first on LMArena
See how this story connectsGoogle DeepMind released Gemini 2.5 Pro Experimental, the first Gemini 2.5 model, which reasons before responding. Google said it debuted at number one on the LMArena leaderboard and that thinking would be built into all its future models.
Why it matters
Google said it would build thinking into all its models from then on, and the first such release debuted at the top of the public LMArena ranking.
- When
- 25 Mar 2025
- ID
WTA-N-2025-0176- Where
- United States
- Who
- Google DeepMind
- Topics
- Frontier models, Model releases
Summary by wheresthe.ai, from Google. Checked against the source on 9 Oct 2026.
Source copy: download the page as saved on 18 Oct 2026 (PDF). Also held by the Internet Archive.
Cite this story
WTA-N-2025-0176: “Google releases Gemini 2.5 Pro, a thinking model that debuts first on LMArena.” wheresthe.ai, 25 Mar 2025. https://wheresthe.ai/d/google-gemini-2-5-pro-2025-03/ (source: Google).
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