DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...
With CoreAI, you can start chatting with DeepSeek: DeepSeek V4.1 Flash instantly — no separate subscription needed. CoreAI lets you chat with DeepSeek: DeepSeek V4.1 Flash alongside 300+ other AI models from DeepSeek and other providers like OpenAI, Anthropic, Google, Meta, and more.
Among the 420 chat models on CoreAI, DeepSeek: DeepSeek V4.1 Flash ranks #29 by context window — 1.0M tokens, roughly 786,432 words or 1,573 pages of text in a single conversation. On price, it is the #86 cheapest of 139 budget-tier models by input cost. Released 2026-09-10, it is one of the 2 newest additions to the catalog. It supports step-by-step reasoning (thinking mode) and accepts image input.
Every model in this table is available on CoreAI — open the web app and run the same prompt through DeepSeek: DeepSeek V4.1 Flash and DeepSeek: DeepSeek V4 Flash Vision Exp (batch) side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00045 on DeepSeek: DeepSeek V4.1 Flash's raw per-token rates; a heavy session with a 50K-token document costs about $0.010. On CoreAI you don't juggle these numbers — one subscription covers DeepSeek: DeepSeek V4.1 Flash and 300+ other models under a plan usage limit, with no API keys. See plans.
DeepSeek: DeepSeek V4.1 Flash handles 1.0M tokens of context — roughly 786,432 words, or about 1,573 pages of text in one conversation.
DeepSeek: DeepSeek V4.1 Flash's underlying rates are $0.15 per 1M input tokens and $0.6 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
Yes — DeepSeek: DeepSeek V4.1 Flash accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. DeepSeek: DeepSeek V4.1 Flash can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick DeepSeek: DeepSeek V4.1 Flash in the model selector, and chat — no API key, no per-token billing. One subscription covers DeepSeek: DeepSeek V4.1 Flash and 300+ other models.
The closest alternatives on CoreAI are DeepSeek: DeepSeek V4 Flash Vision Exp (batch), Meta: Muse Spark 1.3 Contributor, inclusionAI: Ling 3.0 Flash — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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