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	GPT-5 OpenAI	DeepSeek-V3.1 DeepSeek	Llama 4 Maverick Meta	DeepSeek-V4-Pro DeepSeek
Vendor	OpenAI	DeepSeek	Meta	DeepSeek
Family	GPT	DeepSeek	Llama	DeepSeek
Release date	2025-08-07	2025-08-21	2025-04-05	2026-04-22
Context window	400,000 tokens	128,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	671B	400B	1.6T (49B active)
Modality	text, vision, audio	text	text, vision	text
License	proprietary	MIT	Llama 4 Community License	MIT
Source	proprietary	open weights	open weights	open weights
Description	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	Large MoE open-weight model. Predecessor to DeepSeek-V4.	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	vendor →	weights →	weights →	weights →
Benchmarks
MMLU-Pro	85.1%	—	80.5%	84.2%
GPQA-D	87.3%	—	—	82.4%
HumanEval	95.2%	—	—	95.1%
Aider	85.4%	—	—	80.1%
AIME-25	91.0%	—	—	88.6%
LiveCB	74.5%	—	—	72.4%
MMMU	74.1%	—	68.5%	—