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GPT-5.6 Sol×

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	GPT-5.6 Sol OpenAI	Gemini Omni Google	DeepSeek-R1 DeepSeek	Claude 4.7 Opus Anthropic
Vendor	OpenAI	Google	DeepSeek	Anthropic
Family	GPT	Gemini	DeepSeek	Claude
Release date	2026-06-26	2026-05-20	2025-01-20	2026-04-16
Context window	—	1,000,000 tokens	128,000 tokens	1,000,000 tokens
Parameters	—	—	671B	—
Modality	text, vision, audio	text, vision, audio, video	text	text, vision
License	proprietary	proprietary	MIT	proprietary
Source	proprietary	proprietary	open weights	proprietary
Description	Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens.	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	Reasoning-focused open-weight model.	Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle). Optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6.
Links	vendor →	vendor →	weights →	vendor →
Benchmarks
MMLU-Pro	—	—	—	88.2%
GPQA-D	—	—	—	90.1%
HumanEval	—	—	—	97.4%
Aider	—	—	—	91.2%
AIME-25	—	—	79.8%	93.5%
LiveCB	—	—	—	80.2%
MMMU	—	82.5%	—	79.0%