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

Gemini Omni×

o3×

GPT-5×

GPT-5.5×Clear all

	Gemini Omni Google	o3 OpenAI	GPT-5 OpenAI	GPT-5.5 OpenAI
Vendor	Google	OpenAI	OpenAI	OpenAI
Family	Gemini	o-series	GPT	GPT
Release date	2026-05-20	2025-04-16	2025-08-07	2026-04-23
Context window	1,000,000 tokens	200,000 tokens	400,000 tokens	400,000 tokens
Parameters	—	—	—	—
Modality	text, vision, audio, video	text, vision	text, vision, audio	text, vision, audio
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	proprietary
Description	Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model.	Reasoning-focused model in the o-series.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	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.
Links	vendor →		vendor →	vendor →
Benchmarks
MMLU-Pro	—	—	85.1%	87.6%
GPQA-D	—	87.7%	87.3%	89.4%
HumanEval	—	—	95.2%	96.8%
Aider	—	—	85.4%	89.7%
AIME-25	—	88.9%	91.0%	94.2%
LiveCB	—	—	74.5%	78.9%
MMMU	82.5%	—	74.1%	78.4%