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	DeepSeek-R1 DeepSeek	Claude 4.7 Opus Anthropic	GPT-5.5 OpenAI	Qwen3.6-27B Alibaba
Vendor	DeepSeek	Anthropic	OpenAI	Alibaba
Family	DeepSeek	Claude	GPT	Qwen
Release date	2025-01-20	2026-04-16	2026-04-23	2026-04-22
Context window	128,000 tokens	1,000,000 tokens	400,000 tokens	262,144 tokens
Parameters	671B	—	—	27B (dense)
Modality	text	text, vision	text, vision, audio	text, vision, video
License	MIT	proprietary	proprietary	Apache-2.0
Source	open weights	proprietary	proprietary	open weights
Description	Reasoning-focused open-weight model.	Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle). Optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6.	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.	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.
Links	weights →	vendor →	vendor →	weights →
Benchmarks
MMLU-Pro	—	88.2%	87.6%	78.9%
GPQA-D	—	90.1%	89.4%	—
HumanEval	—	97.4%	96.8%	91.5%
Aider	—	91.2%	89.7%	70.2%
AIME-25	79.8%	93.5%	94.2%	—
LiveCB	—	80.2%	78.9%	—
MMMU	—	79.0%	78.4%	70.3%