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	Grok 4 xAI	Llama 4 Maverick Meta	o3 OpenAI	DeepSeek-R1 DeepSeek
Vendor	xAI	Meta	OpenAI	DeepSeek
Family	Grok	Llama	o-series	DeepSeek
Release date	2025-07-09	2025-04-05	2025-04-16	2025-01-20
Context window	256,000 tokens	1,000,000 tokens	200,000 tokens	128,000 tokens
Parameters	—	400B	—	671B
Modality	text	text, vision	text, vision	text
License	proprietary	Llama 4 Community License	proprietary	MIT
Source	proprietary	open weights	proprietary	open weights
Description	—	Mixture-of-experts open-weight model from Meta.	Reasoning-focused model in the o-series.	Reasoning-focused open-weight model.
Links	vendor →	weights →		weights →