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	o3 OpenAI	Qwen3.7-Max Alibaba	Claude 4.6 Sonnet Anthropic	DeepSeek-V4-Flash DeepSeek
Vendor	OpenAI	Alibaba	Anthropic	DeepSeek
Family	o-series	Qwen	Claude	DeepSeek
Release date	2025-04-16	2026-05-20	2026-02-17	2026-04-22
Context window	200,000 tokens	1,000,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	—	—	284B (13B active)
Modality	text, vision	text	text, vision	text
License	proprietary	proprietary	proprietary	MIT
Source	proprietary	proprietary	proprietary	open weights
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.	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.	Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE.
Links		vendor →		weights →
Benchmarks
MMLU-Pro	—	83.7%	85.4%	—
GPQA-D	87.7%	83.0%	85.8%	—
HumanEval	—	93.9%	95.9%	—
Aider	—	78.4%	83.6%	—
AIME-25	88.9%	90.4%	87.4%	—
LiveCB	—	71.0%	73.8%	—