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GPT-5 Pro×

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	GPT-5 Pro OpenAI	Grok 4 xAI	Mistral Large 2 Mistral	Gemini 3 Pro Google
Vendor	OpenAI	xAI	Mistral	Google
Family	GPT	Grok	Mistral	Gemini
Release date	2025-08-07	2025-07-09	2024-07-24	2026-04-22
Context window	400,000 tokens	256,000 tokens	128,000 tokens	2,000,000 tokens
Parameters	—	—	123B	—
Modality	text, vision, audio	text	text	text, vision, audio, video
License	proprietary	proprietary	Mistral Research License	proprietary
Source	proprietary	proprietary	open weights	proprietary
Description	Higher-reasoning variant of GPT-5, used for harder scientific and research tasks (e.g., immunology breakthroughs at NIH). Same 400K context as GPT-5; trades latency for depth.	—	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.	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 →	vendor →	vendor →weights →	vendor →
Benchmarks
MMLU-Pro	—	82.8%	—	87.1%
GPQA-D	—	87.5%	—	88.6%
HumanEval	—	—	89.0%	96.5%
Aider	—	72.5%	—	84.8%
AIME-25	—	86.1%	—	92.8%
LiveCB	—	65.3%	—	76.1%
MMMU	—	—	—	84.3%