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	Gemini Omni Google	Grok 4 xAI	Claude 4.8 Opus Anthropic	Claude 4.7 Opus Anthropic
Vendor	Google	xAI	Anthropic	Anthropic
Family	Gemini	Grok	Claude	Claude
Release date	2026-05-20	2025-07-09	2026-05-28	2026-04-16
Context window	1,000,000 tokens	256,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	—	—	—
Modality	text, vision, audio, video	text	text, vision	text, vision
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	proprietary
Description	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	—	Anthropic's flagship hybrid-reasoning model — Opus 4.8 pushes coding and AI-agent workflows further (agentic coding 69.2% vs 64.3% on 4.7; multidisciplinary reasoning 57.9% vs 54.7%). 1M-token context, $5/$25 per MTok pricing held flat from Opus 4.7. Introduces Dynamic Workflows for Claude Code (research preview). GA on Anthropic API (`claude-opus-4-8`), AWS Bedrock, Google Vertex, Microsoft Foundry, and GitHub Copilot.	Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle).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 →	vendor →	vendor →
Benchmarks
MMLU-Pro	—	82.8%	—	88.2%
GPQA-D	—	87.5%	—	90.1%
HumanEval	—	—	—	97.4%
Aider	—	72.5%	—	91.2%
AIME-25	—	86.1%	—	93.5%
LiveCB	—	65.3%	—	80.2%
MMMU	82.5%	—	—	79.0%