The AI Museum
AI Analytics1,072 recordsRecounted 23 September 2026

Language models from United States of America in 2025

Weightsopenclosedunknownfrontier only
Year20262025202420232022202120202019201820172016
3 filters active, showing 32 of 1,072 recordsClear all

32

Models

9 organisations

13%

Open weights

4 open, 28 closed

3

Frontier

By Epoch's flag

117B

Largest traceable

gpt-oss-120b

2025

Span

3 with a traceable size

Releases

by month
Jan
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Organisation

Country

Domain

Records

32
Language models from United States of America in 2025, newest first. Each row links to the source Epoch AI records for it.
ModelOrganisationReleasedParametersWeights
GPT-5.2 CodexOpenAI2025-12—Closed
Nemotron 3-Nano-30B-A3BNVIDIA2025-1232B *Open
Claude Opus 4.5Anthropic2025-11—Closed
Gemini 3 Deep ThinkGoogle DeepMind2025-11—Closed
GPT-5.1-CodexOpenAI2025-11—Closed
GPT-5.1-Codex-MaxOpenAI2025-11—Closed
Grok 4.1xAI2025-11—Closed
Grok 4.1 FastxAI2025-11—Closed
Kaiju LargeCharacter.ai2025-11110B *Closed
Kaiju MediumCharacter.ai2025-1134B *Closed
Kaiju SmallCharacter.ai2025-1113B *Closed
Olmo 3Allen Institute for AI2025-1132BOpen
Claude Haiku 4.5Anthropic2025-10—Closed
Claude Sonnet 4.5Anthropic2025-09—Closed
Claude Opus 4.1Anthropic2025-08—Closed
Gemini 2.5 Deep ThinkGoogle2025-08—Closed
gpt-oss-120bOpenAI2025-08117BOpen
gpt-oss-20bOpenAI2025-0821BOpen
Gemini EmbeddingGoogle DeepMind2025-07—Closed
Grok 4xAI2025-073.0T *Closed
Grok 4 HeavyxAI2025-07—Closed
Gemini 2.5 Pro (Jun 2025)Google DeepMind2025-06—Closed
Claude Opus 4Anthropic2025-05—Closed
Claude Sonnet 4Anthropic2025-05—Closed
Gemini 2.5 Pro (May 2025)Google DeepMind2025-05—Closed
Gemini 2.5 Pro (Mar 2025)Google DeepMind2025-03—Closed
o1-proOpenAI2025-03—Closed
Claude 3.7 SonnetAnthropic2025-02—Closed
GPT-4.5OpenAI2025-02—Closed
Grok 3xAI2025-023.0T *Closed
MercuryInception Labs2025-02—Closed
o3-miniOpenAI2025-01—Closed

An asterisk marks a parameter figure the source does not consider traceable to the people who built the model. That judgement is the source’s and it has false negatives: Kimi K3 is marked speculative at 2.8T while Moonshot’s own model card states the figure. Why that distinction carries the whole exhibit.

Counts are of models Epoch AI records as notable, not of every model released. The most recent month is always incomplete, because a model enters the dataset when it is reviewed rather than when it ships.

Epoch AI, 'Data on AI Models'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/data/ai-models-documentation' Used under CC BY 4.0.

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