Compare models

Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.

Comparing agents instead? Switch to agent compare →

Selected

Claude 4.8 Opus×

GPT-5.5×

Gemini Omni×

GPT-5×Clear all

	Claude 4.8 Opus Anthropic	GPT-5.5 OpenAI	Gemini Omni Google	GPT-5 OpenAI
Vendor	Anthropic	OpenAI	Google	OpenAI
Family	Claude	GPT	Gemini	GPT
Release date	2026-05-28	2026-04-23	2026-05-20	2025-08-07
Context window	1,000,000 tokens	400,000 tokens	1,000,000 tokens	400,000 tokens
Parameters	—	—	—	—
Modality	text, vision	text, vision, audio	text, vision, audio, video	text, vision, audio
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	proprietary
Description	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.	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.	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
Links	vendor →	vendor →	vendor →	vendor →
Benchmarks
MMLU-Pro	—	87.6%	—	85.1%
GPQA-D	—	89.4%	—	87.3%
HumanEval	—	96.8%	—	95.2%
Aider	—	89.7%	—	85.4%
AIME-25	—	94.2%	—	91.0%
LiveCB	—	78.9%	—	74.5%
MMMU	—	78.4%	82.5%	74.1%