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Claude 4.6 Sonnet×

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	Claude 4.6 Sonnet Anthropic	Gemini 3.5 Google	o3 OpenAI	DeepSeek-V4-Pro DeepSeek
Vendor	Anthropic	Google	OpenAI	DeepSeek
Family	Claude	Gemini	o-series	DeepSeek
Release date	2026-02-17	2026-05-20	2025-04-16	2026-04-22
Context window	1,000,000 tokens	2,000,000 tokens	200,000 tokens	1,000,000 tokens
Parameters	—	—	—	1.6T (49B active)
Modality	text, vision	text, vision, audio, video	text, vision	text
License	proprietary	proprietary	proprietary	MIT
Source	proprietary	proprietary	proprietary	open weights
Description	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.	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	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.
Links		vendor →		weights →
Benchmarks
MMLU-Pro	85.4%	88.9%	—	84.2%
GPQA-D	85.8%	91.2%	87.7%	82.4%
HumanEval	95.9%	—	—	95.1%
Aider	83.6%	—	—	80.1%
AIME-25	87.4%	96.1%	88.9%	88.6%
LiveCB	73.8%	—	—	72.4%
MMMU	—	86.0%	—	—