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	Mistral Large 2 Mistral	Gemini Omni Google	Gemini 2.5 Flash Google	GPT-5.5 OpenAI
Vendor	Mistral	Google	Google	OpenAI
Family	Mistral	Gemini	Gemini	GPT
Release date	2024-07-24	2026-05-20	2025-06-17	2026-04-23
Context window	128,000 tokens	1,000,000 tokens	1,000,000 tokens	400,000 tokens
Parameters	123B	—	—	—
Modality	text	text, vision, audio, video	text, vision, audio	text, vision, audio
License	Mistral Research License	proprietary	proprietary	proprietary
Source	open weights	proprietary	proprietary	proprietary
Description	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.	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.
Links	vendor →weights →	vendor →		vendor →
Benchmarks
MMLU-Pro	—	—	—	87.6%
GPQA-D	—	—	—	89.4%
HumanEval	89.0%	—	—	96.8%
Aider	—	—	—	89.7%
AIME-25	—	—	—	94.2%
LiveCB	—	—	—	78.9%
MMMU	—	82.5%	—	78.4%