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	o3 OpenAI	DeepSeek-R1 DeepSeek	Llama 4 Maverick Meta	DeepSeek-V3.1 DeepSeek
Vendor	OpenAI	DeepSeek	Meta	DeepSeek
Family	o-series	DeepSeek	Llama	DeepSeek
Release date	2025-04-16	2025-01-20	2025-04-05	2025-08-21
Context window	200,000 tokens	128,000 tokens	1,000,000 tokens	128,000 tokens
Parameters	—	671B	400B	671B
Modality	text, vision	text	text, vision	text
License	proprietary	MIT	Llama 4 Community License	MIT
Source	proprietary	open weights	open weights	open weights
Description	Reasoning-focused model in the o-series.	Reasoning-focused open-weight model.	Mixture-of-experts open-weight model from Meta.	Large MoE open-weight model. Predecessor to DeepSeek-V4.
Links		weights →	weights →	weights →