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	Gemini 3.5 Google	Gemini 2.5 Flash Google	GPT-5 OpenAI	Gemini 3 Pro Google
Vendor	Google	Google	OpenAI	Google
Family	Gemini	Gemini	GPT	Gemini
Release date	2026-05-20	2025-06-17	2025-08-07	2026-04-22
Context window	2,000,000 tokens	1,000,000 tokens	400,000 tokens	2,000,000 tokens
Parameters	—	—	—	—
Modality	text, vision, audio, video	text, vision, audio	text, vision, audio	text, vision, audio, video
License	proprietary	proprietary	proprietary	proprietary
Source	proprietary	proprietary	proprietary	proprietary
Description	Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026.	Google's cost-and-latency-optimized Gemini 2.5 variant. Generally available June 2025 — designed for high-throughput agentic workflows with sub-second first-token latency.	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 Superseded by GPT-5.5 in April 2026.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.
Links	vendor →		vendor →	vendor →
Benchmarks
MMLU-Pro	88.9%	—	85.1%	87.1%
GPQA-D	91.2%	—	87.3%	88.6%
HumanEval	—	—	95.2%	96.5%
Aider	—	—	85.4%	84.8%
AIME-25	96.1%	—	91.0%	92.8%
LiveCB	—	—	74.5%	76.1%
MMMU	86.0%	—	74.1%	84.3%