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	o3 OpenAI	DeepSeek-V4-Pro DeepSeek	Llama 4 Maverick Meta	Claude 4.6 Sonnet Anthropic
Vendor	OpenAI	DeepSeek	Meta	Anthropic
Family	o-series	DeepSeek	Llama	Claude
Release date	2025-04-16	2026-04-22	2025-04-05	2026-02-17
Context window	200,000 tokens	1,000,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	1.6T (49B active)	400B	—
Modality	text, vision	text	text, vision	text, vision
License	proprietary	MIT	Llama 4 Community License	proprietary
Source	proprietary	open weights	open weights	proprietary
Description	Reasoning-focused model in the o-series.	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.	Mixture-of-experts open-weight model from Meta.	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.
Links		weights →	weights →
Benchmarks
MMLU-Pro	—	84.2%	80.5%	85.4%
GPQA-D	87.7%	82.4%	—	85.8%
HumanEval	—	95.1%	—	95.9%
Aider	—	80.1%	—	83.6%
AIME-25	88.9%	88.6%	—	87.4%
LiveCB	—	72.4%	—	73.8%
MMMU	—	—	68.5%	—