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	Grok 4 xAI	GPT-5.6 Sol OpenAI	Gemini 3.5 Google	Qwen3.6-27B Alibaba
Vendor	xAI	OpenAI	Google	Alibaba
Family	Grok	GPT	Gemini	Qwen
Release date	2025-07-09	2026-06-26	2026-05-20	2026-04-22
Context window	256,000 tokens	—	2,000,000 tokens	262,144 tokens
Parameters	—	—	—	27B (dense)
Modality	text	text, vision, audio	text, vision, audio, video	text, vision, video
License	proprietary	proprietary	proprietary	Apache-2.0
Source	proprietary	proprietary	proprietary	open weights
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.	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input.
Links	vendor →	vendor →	vendor →	weights →
Benchmarks
MMLU-Pro	82.8%	—	88.9%	78.9%
GPQA-D	87.5%	—	91.2%	—
HumanEval	—	—	—	91.5%
Aider	72.5%	—	—	70.2%
AIME-25	86.1%	—	96.1%	—
LiveCB	65.3%	—	—	—
MMMU	—	—	86.0%	70.3%