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	Llama 4 Maverick Meta	Gemini 3.5 Google	GPT-5.5 OpenAI	GPT-5 OpenAI
Vendor	Meta	Google	OpenAI	OpenAI
Family	Llama	Gemini	GPT	GPT
Release date	2025-04-05	2026-05-20	2026-04-23	2025-08-07
Context window	1,000,000 tokens	2,000,000 tokens	400,000 tokens	400,000 tokens
Parameters	400B	—	—	—
Modality	text, vision	text, vision, audio, video	text, vision, audio	text, vision, audio
License	Llama 4 Community License	proprietary	proprietary	proprietary
Source	open weights	proprietary	proprietary	proprietary
Description	Mixture-of-experts open-weight model from Meta.	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	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.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
Links	weights →	vendor →	vendor →	vendor →
Benchmarks
MMLU-Pro	80.5%	88.9%	87.6%	85.1%
GPQA-D	—	91.2%	89.4%	87.3%
HumanEval	—	—	96.8%	95.2%
Aider	—	—	89.7%	85.4%
AIME-25	—	96.1%	94.2%	91.0%
LiveCB	—	—	78.9%	74.5%
MMMU	68.5%	86.0%	78.4%	74.1%