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	Gemini 3 Pro Google	GPT-5.5 OpenAI	Claude 4.6 Sonnet Anthropic	DeepSeek-R1 DeepSeek
Vendor	Google	OpenAI	Anthropic	DeepSeek
Family	Gemini	GPT	Claude	DeepSeek
Release date	2026-04-22	2026-04-23	2026-02-17	2025-01-20
Context window	2,000,000 tokens	400,000 tokens	1,000,000 tokens	128,000 tokens
Parameters	—	—	—	671B
Modality	text, vision, audio, video	text, vision, audio	text, vision	text
License	proprietary	proprietary	proprietary	MIT
Source	proprietary	proprietary	proprietary	open weights
Description	Google DeepMind's flagship multimodal model. Best-in-class for multimodal understanding and agentic / vibe coding workflows. A "Deep Think" reasoning mode is available to AI Ultra subscribers.	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.	Anthropic's mid-tier flagship — released 12 days after Opus 4.6 and matching most of its capabilities at ~40% the API cost ($3/$15 per 1M tokens). 1M-token context.	Reasoning-focused open-weight model.
Links	vendor →	vendor →		weights →
Benchmarks
MMLU-Pro	87.1%	87.6%	85.4%	—
GPQA-D	88.6%	89.4%	85.8%	—
HumanEval	96.5%	96.8%	95.9%	—
Aider	84.8%	89.7%	83.6%	—
AIME-25	92.8%	94.2%	87.4%	79.8%
LiveCB	76.1%	78.9%	73.8%	—
MMMU	84.3%	78.4%	—	—