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	DeepSeek-V3.1 DeepSeek	o3 OpenAI	Llama 4 Maverick Meta	DeepSeek-V4-Pro DeepSeek
Vendor	DeepSeek	OpenAI	Meta	DeepSeek
Family	DeepSeek	o-series	Llama	DeepSeek
Release date	2025-08-21	2025-04-16	2025-04-05	2026-04-22
Context window	128,000 tokens	200,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	671B	—	400B	1.6T (49B active)
Modality	text	text, vision	text, vision	text
License	MIT	proprietary	Llama 4 Community License	MIT
Source	open weights	proprietary	open weights	open weights
Description	Large MoE open-weight model. Predecessor to DeepSeek-V4.	Reasoning-focused model in the o-series.	Mixture-of-experts open-weight model from Meta.	DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs.
Links	weights →		weights →	weights →