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DeepSeek-V4-Pro×

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	DeepSeek-V4-Pro DeepSeek	GPT-5.5 OpenAI	Llama 4 Maverick Meta	o3 OpenAI
Vendor	DeepSeek	OpenAI	Meta	OpenAI
Family	DeepSeek	GPT	Llama	o-series
Release date	2026-04-22	2026-04-23	2025-04-05	2025-04-16
Context window	1,000,000 tokens	400,000 tokens	1,000,000 tokens	200,000 tokens
Parameters	1.6T (49B active)	—	400B	—
Modality	text	text, vision, audio	text, vision	text, vision
License	MIT	proprietary	Llama 4 Community License	proprietary
Source	open weights	proprietary	open weights	proprietary
Description	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.	OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning.	Mixture-of-experts open-weight model from Meta.	Reasoning-focused model in the o-series.
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