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	GPT-5 OpenAI	Gemini 3 Pro Google	Claude 4.8 Opus Anthropic	DeepSeek-R1 DeepSeek
Vendor	OpenAI	Google	Anthropic	DeepSeek
Family	GPT	Gemini	Claude	DeepSeek
Release date	2025-08-07	2026-04-22	2026-05-28	2025-01-20
Context window	400,000 tokens	2,000,000 tokens	1,000,000 tokens	128,000 tokens
Parameters	—	—	—	671B
Modality	text, vision, audio	text, vision, audio, video	text, vision	text
License	proprietary	proprietary	proprietary	MIT
Source	proprietary	proprietary	proprietary	open weights
Description	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	Google DeepMind's flagship multimodal model. Best-in-class for multimodal understanding and agentic / vibe coding workflows. A "Deep Think" reasoning mode is available to AI Ultra subscribers.	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.	Reasoning-focused open-weight model.
Links	vendor →	vendor →	vendor →	weights →
Benchmarks
MMLU-Pro	85.1%	87.1%	—	—
GPQA-D	87.3%	88.6%	—	—
HumanEval	95.2%	96.5%	—	—
Aider	85.4%	84.8%	—	—
AIME-25	91.0%	92.8%	—	79.8%
LiveCB	74.5%	76.1%	—	—
MMMU	74.1%	84.3%	—	—