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	o3 OpenAI	Qwen3.6-27B Alibaba	Claude 4.6 Sonnet Anthropic	Claude 4.7 Opus Anthropic
Vendor	OpenAI	Alibaba	Anthropic	Anthropic
Family	o-series	Qwen	Claude	Claude
Release date	2025-04-16	2026-04-22	2026-02-17	2026-04-16
Context window	200,000 tokens	262,144 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	27B (dense)	—	—
Modality	text, vision	text, vision, video	text, vision	text, vision
License	proprietary	Apache-2.0	proprietary	proprietary
Source	proprietary	open weights	proprietary	proprietary
Description	Reasoning-focused model in the o-series.	Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input.	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.	Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle). Optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6.
Links		weights →		vendor →
Benchmarks
MMLU-Pro	—	78.9%	85.4%	88.2%
GPQA-D	87.7%	—	85.8%	90.1%
HumanEval	—	91.5%	95.9%	97.4%
Aider	—	70.2%	83.6%	91.2%
AIME-25	88.9%	—	87.4%	93.5%
LiveCB	—	—	73.8%	80.2%
MMMU	—	70.3%	—	79.0%