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DeepSeek-V4-Pro×

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	DeepSeek-V4-Pro DeepSeek	Claude 4.8 Opus Anthropic	Grok 4 xAI	GPT-5 OpenAI
Vendor	DeepSeek	Anthropic	xAI	OpenAI
Family	DeepSeek	Claude	Grok	GPT
Release date	2026-04-22	2026-05-28	2025-07-09	2025-08-07
Context window	1,000,000 tokens	1,000,000 tokens	256,000 tokens	400,000 tokens
Parameters	1.6T (49B active)	—	—	—
Modality	text	text, vision	text	text, vision, audio
License	MIT	proprietary	proprietary	proprietary
Source	open weights	proprietary	proprietary	proprietary
Description	DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs.	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.	—	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
Links	weights →	vendor →	vendor →	vendor →
Benchmarks
MMLU-Pro	84.2%	—	82.8%	85.1%
GPQA-D	82.4%	—	87.5%	87.3%
HumanEval	95.1%	—	—	95.2%
Aider	80.1%	—	72.5%	85.4%
AIME-25	88.6%	—	86.1%	91.0%
LiveCB	72.4%	—	65.3%	74.5%
MMMU	—	—	—	74.1%