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	o3 OpenAI	Claude 4.6 Sonnet Anthropic	Gemini Omni Google	DeepSeek-V4-Pro DeepSeek
Vendor	OpenAI	Anthropic	Google	DeepSeek
Family	o-series	Claude	Gemini	DeepSeek
Release date	2025-04-16	2026-02-17	2026-05-20	2026-04-22
Context window	200,000 tokens	1,000,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	—	—	1.6T (49B active)
Modality	text, vision	text, vision	text, vision, audio, video	text
License	proprietary	proprietary	proprietary	MIT
Source	proprietary	proprietary	proprietary	open weights
Description	Reasoning-focused model in the o-series.	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.	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	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.
Links			vendor →	weights →
Benchmarks
MMLU-Pro	—	85.4%	—	84.2%
GPQA-D	87.7%	85.8%	—	82.4%
HumanEval	—	95.9%	—	95.1%
Aider	—	83.6%	—	80.1%
AIME-25	88.9%	87.4%	—	88.6%
LiveCB	—	73.8%	—	72.4%
MMMU	—	—	82.5%	—