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	o3 OpenAI	Qwen3.7-Max Alibaba	GPT-5 OpenAI	Claude 4.8 Opus Anthropic
Vendor	OpenAI	Alibaba	OpenAI	Anthropic
Family	o-series	Qwen	GPT	Claude
Release date	2025-04-16	2026-05-20	2025-08-07	2026-05-28
Context window	200,000 tokens	1,000,000 tokens	400,000 tokens	1,000,000 tokens
Parameters	—	—	—	—
Modality	text, vision	text	text, vision, audio	text, vision
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	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.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	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 →	vendor →	vendor →
Benchmarks
MMLU-Pro	—	83.7%	85.1%	—
GPQA-D	87.7%	83.0%	87.3%	—
HumanEval	—	93.9%	95.2%	—
Aider	—	78.4%	85.4%	—
AIME-25	88.9%	90.4%	91.0%	—
LiveCB	—	71.0%	74.5%	—
MMMU	—	—	74.1%	—