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DeepSeek-R1×

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	DeepSeek-R1 DeepSeek	Gemini 3.5 Google	Mistral Large 2 Mistral	GPT-5.5 OpenAI
Vendor	DeepSeek	Google	Mistral	OpenAI
Family	DeepSeek	Gemini	Mistral	GPT
Release date	2025-01-20	2026-05-20	2024-07-24	2026-04-23
Context window	128,000 tokens	2,000,000 tokens	128,000 tokens	400,000 tokens
Parameters	671B	—	123B	—
Modality	text	text, vision, audio, video	text	text, vision, audio
License	MIT	proprietary	Mistral Research License	proprietary
Source	open weights	proprietary	open weights	proprietary
Description	Reasoning-focused open-weight model.	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	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	—	88.9%	—	87.6%
GPQA-D	—	91.2%	—	89.4%
HumanEval	—	—	89.0%	96.8%
Aider	—	—	—	89.7%
AIME-25	79.8%	96.1%	—	94.2%
LiveCB	—	—	—	78.9%
MMMU	—	86.0%	—	78.4%