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Gemini Omni×

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	Gemini Omni Google	GPT-5.5 OpenAI	Gemini 3 Pro Google	GPT-5 OpenAI
Vendor	Google	OpenAI	Google	OpenAI
Family	Gemini	GPT	Gemini	GPT
Release date	2026-05-20	2026-04-23	2026-04-22	2025-08-07
Context window	1,000,000 tokens	400,000 tokens	2,000,000 tokens	400,000 tokens
Parameters	—	—	—	—
Modality	text, vision, audio, video	text, vision, audio	text, vision, audio, video	text, vision, audio
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	proprietary
Description	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	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.	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.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
Links	vendor →	vendor →	vendor →	vendor →
Benchmarks
MMLU-Pro	—	87.6%	87.1%	85.1%
GPQA-D	—	89.4%	88.6%	87.3%
HumanEval	—	96.8%	96.5%	95.2%
Aider	—	89.7%	84.8%	85.4%
AIME-25	—	94.2%	92.8%	91.0%
LiveCB	—	78.9%	76.1%	74.5%
MMMU	82.5%	78.4%	84.3%	74.1%