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	GPT-5.5 OpenAI	Gemini Omni Google	Claude 4.7 Opus Anthropic	GPT-5 OpenAI
Vendor	OpenAI	Google	Anthropic	OpenAI
Family	GPT	Gemini	Claude	GPT
Release date	2026-04-23	2026-05-20	2026-04-16	2025-08-07
Context window	400,000 tokens	1,000,000 tokens	1,000,000 tokens	400,000 tokens
Parameters	—	—	—	—
Modality	text, vision, audio	text, vision, audio, video	text, vision	text, vision, audio
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	proprietary
Description	OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning.	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single 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	Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle).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.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
Links	vendor →	vendor →	vendor →	vendor →
Benchmarks
MMLU-Pro	87.6%	—	88.2%	85.1%
GPQA-D	89.4%	—	90.1%	87.3%
HumanEval	96.8%	—	97.4%	95.2%
Aider	89.7%	—	91.2%	85.4%
AIME-25	94.2%	—	93.5%	91.0%
LiveCB	78.9%	—	80.2%	74.5%
MMMU	78.4%	82.5%	79.0%	74.1%