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	DeepSeek-V3.1 DeepSeek	Qwen3.7-Max Alibaba	Claude 4.8 Opus Anthropic	GPT-5 OpenAI
Vendor	DeepSeek	Alibaba	Anthropic	OpenAI
Family	DeepSeek	Qwen	Claude	GPT
Release date	2025-08-21	2026-05-20	2026-05-28	2025-08-07
Context window	128,000 tokens	1,000,000 tokens	1,000,000 tokens	400,000 tokens
Parameters	671B	—	—	—
Modality	text	text	text, vision	text, vision, audio
License	MIT	proprietary	proprietary	proprietary
Source	open weights	proprietary	proprietary	proprietary
Description	Large MoE open-weight model. Predecessor to DeepSeek-V4.	Alibaba's flagship agent model — 1M-token context, extended-thinking mode, 56.6 on the Artificial Analysis Intelligence Index v4.0 (5th overall, #1 Chinese). 50.8% on Terminal-Bench Hard. Designed for long-horizon agent workloads (hundreds-to-thousands of steps). Closed-weight, $2.50/$7.50 per 1M tokens.	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 Superseded by GPT-5.5 in April 2026.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	—	83.7%	—	85.1%
GPQA-D	—	83.0%	—	87.3%
HumanEval	—	93.9%	—	95.2%
Aider	—	78.4%	—	85.4%
AIME-25	—	90.4%	—	91.0%
LiveCB	—	71.0%	—	74.5%
MMMU	—	—	—	74.1%