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Claude 4.8 Opus×

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	Claude 4.8 Opus Anthropic	Grok 4 xAI	Llama 4 Maverick Meta	DeepSeek-R1 DeepSeek
Vendor	Anthropic	xAI	Meta	DeepSeek
Family	Claude	Grok	Llama	DeepSeek
Release date	2026-05-28	2025-07-09	2025-04-05	2025-01-20
Context window	1,000,000 tokens	256,000 tokens	1,000,000 tokens	128,000 tokens
Parameters	—	—	400B	671B
Modality	text, vision	text	text, vision	text
License	proprietary	proprietary	Llama 4 Community License	MIT
Source	proprietary	proprietary	open weights	open weights
Description	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.	—	Mixture-of-experts open-weight model from Meta.	Reasoning-focused open-weight model.
Links	vendor →	vendor →	weights →	weights →
Benchmarks
MMLU-Pro	—	82.8%	80.5%	—
GPQA-D	—	87.5%	—	—
Aider	—	72.5%	—	—
AIME-25	—	86.1%	—	79.8%
LiveCB	—	65.3%	—	—
MMMU	—	—	68.5%	—