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	Grok 4 xAI	Mistral Large 2 Mistral	Qwen3.7-Max Alibaba	GPT-5.5 OpenAI
Vendor	xAI	Mistral	Alibaba	OpenAI
Family	Grok	Mistral	Qwen	GPT
Release date	2025-07-09	2024-07-24	2026-05-20	2026-04-23
Context window	256,000 tokens	128,000 tokens	1,000,000 tokens	400,000 tokens
Parameters	—	123B	—	—
Modality	text	text	text	text, vision, audio
License	proprietary	Mistral Research License	proprietary	proprietary
Source	proprietary	open weights	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.	Alibaba's flagship agent model — 1M-token context, extended-thinking mode, 56.6 on the Artificial Analysis Intelligence Index v4.0 (5th overall, #1 Chinese). 50.8% on Terminal-Bench Hard. Designed for long-horizon agent workloads (hundreds-to-thousands of steps). Closed-weight, $2.50/$7.50 per 1M tokens.	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 →	vendor →weights →	vendor →	vendor →
Benchmarks
MMLU-Pro	82.8%	—	83.7%	87.6%
GPQA-D	87.5%	—	83.0%	89.4%
HumanEval	—	89.0%	93.9%	96.8%
Aider	72.5%	—	78.4%	89.7%
AIME-25	86.1%	—	90.4%	94.2%
LiveCB	65.3%	—	71.0%	78.9%
MMMU	—	—	—	78.4%