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DeepSeek-V4-Flash×

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	DeepSeek-V4-Flash DeepSeek	GPT-5.5 OpenAI	Mistral Large 2 Mistral	Grok 4 xAI
Vendor	DeepSeek	OpenAI	Mistral	xAI
Family	DeepSeek	GPT	Mistral	Grok
Release date	2026-04-22	2026-04-23	2024-07-24	2025-07-09
Context window	1,000,000 tokens	400,000 tokens	128,000 tokens	256,000 tokens
Parameters	284B (13B active)	—	123B	—
Modality	text	text, vision, audio	text	text
License	MIT	proprietary	Mistral Research License	proprietary
Source	open weights	proprietary	open weights	proprietary
Description	Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE.	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.	Large text-only Mistral model with a 128K context window and 123B parameters, tuned for strong instruction following and long-context reasoning. Mistral's flagship open-weights release in the Large 2 line.	—
Links	weights →	vendor →	vendor →weights →	vendor →
Benchmarks
MMLU-Pro	—	87.6%	—	82.8%
GPQA-D	—	89.4%	—	87.5%
HumanEval	—	96.8%	89.0%	—
Aider	—	89.7%	—	72.5%
AIME-25	—	94.2%	—	86.1%
LiveCB	—	78.9%	—	65.3%
MMMU	—	78.4%	—	—