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	o3 OpenAI	Qwen3.7-Max Alibaba	DeepSeek-V4-Pro DeepSeek	Claude 4.8 Opus Anthropic
Vendor	OpenAI	Alibaba	DeepSeek	Anthropic
Family	o-series	Qwen	DeepSeek	Claude
Release date	2025-04-16	2026-05-20	2026-04-22	2026-05-28
Context window	200,000 tokens	1,000,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	—	1.6T (49B active)	—
Modality	text, vision	text	text	text, vision
License	proprietary	proprietary	MIT	proprietary
Source	proprietary	proprietary	open weights	proprietary
Description	Reasoning-focused model in the o-series.	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.	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.
Links		vendor →	weights →	vendor →
Benchmarks
MMLU-Pro	—	83.7%	84.2%	—
GPQA-D	87.7%	83.0%	82.4%	—
HumanEval	—	93.9%	95.1%	—
Aider	—	78.4%	80.1%	—
AIME-25	88.9%	90.4%	88.6%	—
LiveCB	—	71.0%	72.4%	—