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	DeepSeek-V3.1 DeepSeek	Qwen3.7-Max Alibaba	Mistral Large 2 Mistral	GPT-5.5 OpenAI
Vendor	DeepSeek	Alibaba	Mistral	OpenAI
Family	DeepSeek	Qwen	Mistral	GPT
Release date	2025-08-21	2026-05-20	2024-07-24	2026-04-23
Context window	128,000 tokens	1,000,000 tokens	128,000 tokens	400,000 tokens
Parameters	671B	—	123B	—
Modality	text	text	text	text, vision, audio
License	MIT	proprietary	Mistral Research License	proprietary
Source	open weights	proprietary	open weights	proprietary
Description	Large MoE open-weight model. Predecessor to DeepSeek-V4.	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.	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 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	weights →	vendor →	vendor →weights →	vendor →
Benchmarks
MMLU-Pro	—	83.7%	—	87.6%
GPQA-D	—	83.0%	—	89.4%
HumanEval	—	93.9%	89.0%	96.8%
Aider	—	78.4%	—	89.7%
AIME-25	—	90.4%	—	94.2%
LiveCB	—	71.0%	—	78.9%
MMMU	—	—	—	78.4%