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Claude 4.8 Opus×Clear all

	GPT-5.5 OpenAI	DeepSeek-R1 DeepSeek	Qwen3.7-Max Alibaba	Claude 4.8 Opus Anthropic
Vendor	OpenAI	DeepSeek	Alibaba	Anthropic
Family	GPT	DeepSeek	Qwen	Claude
Release date	2026-04-23	2025-01-20	2026-05-20	2026-05-28
Context window	400,000 tokens	128,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	671B	—	—
Modality	text, vision, audio	text	text	text, vision
License	proprietary	MIT	proprietary	proprietary
Source	proprietary	open weights	proprietary	proprietary
Description	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.	Reasoning-focused open-weight model.	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 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 →	weights →	vendor →	vendor →
Benchmarks
MMLU-Pro	87.6%	—	83.7%	—
GPQA-D	89.4%	—	83.0%	—
HumanEval	96.8%	—	93.9%	—
Aider	89.7%	—	78.4%	—
AIME-25	94.2%	79.8%	90.4%	—
LiveCB	78.9%	—	71.0%	—
MMMU	78.4%	—	—	—