DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is a DeepSeek model available in Quad Chat, with up to 1.05M tokens of context, image input, tool calling and step-by-step reasoning.
DeepSeek V4.1 Flash at a glance
| Lab | DeepSeek |
|---|---|
| Available on | Free plan |
| Context window | 1.05M tokens |
| Max output | 32K tokens |
| Image input | Yes |
| Tool calling | Yes |
| Reasoning | Yes |
| Privacy lane | Private (Zero Data Retention) |
How to use DeepSeek V4.1 Flash in Quad Chat
- Create a free account or sign in.
- Open the model picker and choose DeepSeek V4.1 Flash.
- Ask, attach files, or compare the answer with another model.
Frequently asked questions
Can I use DeepSeek V4.1 Flash for free?
Yes. DeepSeek V4.1 Flash is available on the Quad Chat Free plan, which needs no credit card and includes 100 monthly credits shared across every model. Larger requests use more credits, and paid plans from $8/month raise the allowance.
What is the context window of DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash accepts up to 1.05M tokens of context and can write up to 32K tokens in one reply, according to the model catalog Quad Chat routes through. Files, pasted text and earlier messages all count toward that window.
Does DeepSeek V4.1 Flash support images, tools and reasoning?
DeepSeek V4.1 Flash accepts images as input, so you can attach screenshots, photos and scanned pages. It supports tool calling. It can reason step by step before it answers. You can switch to another model in the same conversation at any time.
Is DeepSeek V4.1 Flash private in Quad Chat?
DeepSeek V4.1 Flash runs on the Quad Chat Private Lane, routed to providers under Zero Data Retention terms. Quad Chat does not train models on your conversations, encrypts chats in transit and at rest, and lets you export or delete them at any time.
How much does DeepSeek V4.1 Flash cost in Quad Chat?
Quad Chat plans have a flat monthly price and draw usage from shared credits, not a per-token bill. The model picker shows an estimate before you send. For reference, the provider's API list price is $0.30 per million input tokens and $1.20 per million output tokens.
Can I compare DeepSeek V4.1 Flash with other models?
Yes. Send one prompt to DeepSeek V4.1 Flash and one or two other models, such as DeepSeek V4, DeepSeek V3.2 and GPT-6.1 Sol, and compare the answers side by side in the same thread. You can also switch models mid-conversation without losing your files or context.
Related models
- DeepSeek V4 — DeepSeek, Free plan
- DeepSeek V3.2 — DeepSeek, Free plan
- GPT-6.1 Sol — OpenAI, Pro plan and up
- Gemini 3.8 Flash — Google, Pro plan and up
- Claude Opus 5.5 — Anthropic, Ultra plan and up
- Kimi K3 — Moonshot AI, Free plan
- Muse Spark 1.3 — Meta, Free plan
- Inkling — Thinking Machines, Free plan