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Gemini Omni×

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	Gemini Omni Google	GPT-5.5 OpenAI	Mistral Large 2 Mistral	GPT-5 OpenAI
Vendor	Google	OpenAI	Mistral	OpenAI
Family	Gemini	GPT	Mistral	GPT
Release date	2026-05-20	2026-04-23	2024-07-24	2025-08-07
Context window	1,000,000 tokens	400,000 tokens	128,000 tokens	400,000 tokens
Parameters	—	—	123B	—
Modality	text, vision, audio, video	text, vision, audio	text	text, vision, audio
License	proprietary	proprietary	Mistral Research License	proprietary
Source	proprietary	proprietary	open weights	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.	Large text-only Mistral model with a 128K context window and 123B parameters, tuned for strong instruction following and long-context reasoning. Mistral's flagship open-weights release in the Large 2 line.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
Links	vendor →	vendor →	vendor →weights →	vendor →
Benchmarks
MMLU-Pro	—	87.6%	—	85.1%
GPQA-D	—	89.4%	—	87.3%
HumanEval	—	96.8%	89.0%	95.2%
Aider	—	89.7%	—	85.4%
AIME-25	—	94.2%	—	91.0%
LiveCB	—	78.9%	—	74.5%
MMMU	82.5%	78.4%	—	74.1%