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	o3 OpenAI	Qwen3.7-Max Alibaba	GPT-5.5 OpenAI	Claude 4.6 Sonnet Anthropic
Vendor	OpenAI	Alibaba	OpenAI	Anthropic
Family	o-series	Qwen	GPT	Claude
Release date	2025-04-16	2026-05-20	2026-04-23	2026-02-17
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 smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning.	Anthropic's mid-tier flagship — released 12 days after Opus 4.6 and matching most of its capabilities at ~40% the API cost ($3/$15 per 1M tokens). 1M-token context.
Links		vendor →	vendor →
Benchmarks
MMLU-Pro	—	83.7%	87.6%	85.4%
GPQA-D	87.7%	83.0%	89.4%	85.8%
HumanEval	—	93.9%	96.8%	95.9%
Aider	—	78.4%	89.7%	83.6%
AIME-25	88.9%	90.4%	94.2%	87.4%
LiveCB	—	71.0%	78.9%	73.8%
MMMU	—	—	78.4%	—