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	o3 OpenAI	Qwen3.6-27B Alibaba	Claude 4.8 Opus Anthropic	DeepSeek-V4-Pro DeepSeek
Vendor	OpenAI	Alibaba	Anthropic	DeepSeek
Family	o-series	Qwen	Claude	DeepSeek
Release date	2025-04-16	2026-04-22	2026-05-28	2026-04-22
Context window	200,000 tokens	262,144 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	27B (dense)	—	1.6T (49B active)
Modality	text, vision	text, vision, video	text, vision	text
License	proprietary	Apache-2.0	proprietary	MIT
Source	proprietary	open weights	proprietary	open weights
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 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.	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.
Links		weights →	vendor →	weights →
Benchmarks
MMLU-Pro	—	78.9%	—	84.2%
GPQA-D	87.7%	—	—	82.4%
HumanEval	—	91.5%	—	95.1%
Aider	—	70.2%	—	80.1%
AIME-25	88.9%	—	—	88.6%
LiveCB	—	—	—	72.4%
MMMU	—	70.3%	—	—