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	Gemini Omni Google	Gemini 2.5 Flash Google	GPT-5.5 OpenAI	Mistral Large 2 Mistral
Vendor	Google	Google	OpenAI	Mistral
Family	Gemini	Gemini	GPT	Mistral
Release date	2026-05-20	2025-06-17	2026-04-23	2024-07-24
Context window	1,000,000 tokens	1,000,000 tokens	400,000 tokens	128,000 tokens
Parameters	—	—	—	123B
Modality	text, vision, audio, video	text, vision, audio	text, vision, audio	text
License	proprietary	proprietary	proprietary	Mistral Research License
Source	proprietary	proprietary	proprietary	open weights
Description	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	Google's cost-and-latency-optimized Gemini 2.5 variant. Generally available June 2025 — designed for high-throughput agentic workflows with sub-second first-token latency.	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.
Links	vendor →		vendor →	vendor →weights →
Benchmarks
MMLU-Pro	—	—	87.6%	—
GPQA-D	—	—	89.4%	—
HumanEval	—	—	96.8%	89.0%
Aider	—	—	89.7%	—
AIME-25	—	—	94.2%	—
LiveCB	—	—	78.9%	—
MMMU	82.5%	—	78.4%	—