Models
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Models
Foundation models and notable fine-tunes - closed frontier and open weights.
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Open weights
292
Closed weights
503
GPT-5 Mini
· OpenAI
Closed weights
7 Aug 2025
GPT-5 Nano
· OpenAI
Closed weights
7 Aug 2025
Claude 4.1 Opus
· Anthropic
Closed weights
5 Aug 2025
Devstral Medium
· Mistral AI
Closed weights
10 Jul 2025
Grok 4
· xAI
Closed weights
10 Jul 2025
Gemini 2.5 Pro
· Google (Alphabet Inc.)
Closed weights
5 Jun 2025
Claude 4 Opus
· Anthropic
Closed weights
22 May 2025
Claude 4 Sonnet
· Anthropic
Closed weights
22 May 2025
Gemini 2.5 Flash
· Google (Alphabet Inc.)
Closed weights
20 May 2025
o4 Mini
· OpenAI
Closed weights
16 Apr 2025
GPT-4.1
· OpenAI
Closed weights
14 Apr 2025
GPT-4.1 Mini
· OpenAI
Closed weights
14 Apr 2025
GPT-4.1 Nano
· OpenAI
Closed weights
14 Apr 2025
Llama 4 Behemoth
· Meta FAIR (Fundamental AI Research)
Closed weights
~2T total / 288B active (16 experts) — preview
Apr 2025
o3
· OpenAI
Closed weights
Undisclosed (closed)
Apr 2025
GPT-4.5 (Preview)
· OpenAI
Closed weights
27 Feb 2025
Claude Sonnet 3.7
· Anthropic
Closed weights
24 Feb 2025
Grok 3 mini
· xAI
Closed weights
19 Feb 2025
Grok 3
· xAI
Closed weights
Undisclosed (closed)
Feb 2025
o3 Mini
· OpenAI
Closed weights
31 Jan 2025
Grok 2 (Dec '24)
· xAI
Closed weights
12 Dec 2024
Llama 3.3 Instruct 70B
· Meta Platforms
Closed weights
6 Dec 2024
o1
· OpenAI
Closed weights
5 Dec 2024
GPT-4o
· OpenAI
Closed weights
20 Nov 2024
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