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	GPT-5 OpenAI	DeepSeek-V4-Flash DeepSeek	Llama 4 Maverick Meta	GPT-5.5 OpenAI
Vendor	OpenAI	DeepSeek	Meta	OpenAI
Family	GPT	DeepSeek	Llama	GPT
Release date	2025-08-07	2026-04-22	2025-04-05	2026-04-23
Context window	400,000 tokens	1,000,000 tokens	1,000,000 tokens	400,000 tokens
Parameters	—	284B (13B active)	400B	—
Modality	text, vision, audio	text	text, vision	text, vision, audio
License	proprietary	MIT	Llama 4 Community License	proprietary
Source	proprietary	open weights	open weights	proprietary
Description	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE.	Mixture-of-experts open-weight model from Meta.	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.
Links	vendor →	weights →	weights →	vendor →
Benchmarks
MMLU-Pro	85.1%	—	80.5%	87.6%
GPQA-D	87.3%	—	—	89.4%
HumanEval	95.2%	—	—	96.8%
Aider	85.4%	—	—	89.7%
AIME-25	91.0%	—	—	94.2%
LiveCB	74.5%	—	—	78.9%
MMMU	74.1%	—	68.5%	78.4%