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	GPT-5 OpenAI	DeepSeek-V4-Pro DeepSeek	Gemini 3.5 Google	Gemini 3 Pro Google
Vendor	OpenAI	DeepSeek	Google	Google
Family	GPT	DeepSeek	Gemini	Gemini
Release date	2025-08-07	2026-04-22	2026-05-20	2026-04-22
Context window	400,000 tokens	1,000,000 tokens	2,000,000 tokens	2,000,000 tokens
Parameters	—	1.6T (49B active)	—	—
Modality	text, vision, audio	text	text, vision, audio, video	text, vision, audio, video
License	proprietary	MIT	proprietary	proprietary
Source	proprietary	open weights	proprietary	proprietary
Description	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	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.	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	Google DeepMind's flagship multimodal model. Best-in-class for multimodal understanding and agentic / vibe coding workflows. A "Deep Think" reasoning mode is available to AI Ultra subscribers.
Links	vendor →	weights →	vendor →	vendor →
Benchmarks
MMLU-Pro	85.1%	84.2%	88.9%	87.1%
GPQA-D	87.3%	82.4%	91.2%	88.6%
HumanEval	95.2%	95.1%	—	96.5%
Aider	85.4%	80.1%	—	84.8%
AIME-25	91.0%	88.6%	96.1%	92.8%
LiveCB	74.5%	72.4%	—	76.1%
MMMU	74.1%	—	86.0%	84.3%