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	Gemini 3.5 Google	Qwen3.6-27B Alibaba	DeepSeek-V4-Pro DeepSeek	GPT-5.5 OpenAI
Vendor	Google	Alibaba	DeepSeek	OpenAI
Family	Gemini	Qwen	DeepSeek	GPT
Release date	2026-05-20	2026-04-22	2026-04-22	2026-04-23
Context window	2,000,000 tokens	262,144 tokens	1,000,000 tokens	400,000 tokens
Parameters	—	27B (dense)	1.6T (49B active)	—
Modality	text, vision, audio, video	text, vision, video	text	text, vision, audio
License	proprietary	Apache-2.0	MIT	proprietary
Source	proprietary	open weights	open weights	proprietary
Description	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input.	DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs.	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 →	weights →	vendor →
Benchmarks
MMLU-Pro	88.9%	78.9%	84.2%	87.6%
GPQA-D	91.2%	—	82.4%	89.4%
HumanEval	—	91.5%	95.1%	96.8%
Aider	—	70.2%	80.1%	89.7%
AIME-25	96.1%	—	88.6%	94.2%
LiveCB	—	—	72.4%	78.9%
MMMU	86.0%	70.3%	—	78.4%