DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is a sparse mixture-of-experts model developed by DeepSeek using their new Causal Encoder-Decoder architecture. It supports both text and image inputs and features a large context window alongside built-in reasoning and tool-calling capabilities.
DeepSeek V4.1 Flash specs and pricing
- Provider: DeepSeek
- Released: September 10, 2026
- Context window: 1M tokens
- Max output: 944K tokens
- Input: text, images
- Output: text
- Price: $0.045 input / $0.50 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
What DeepSeek V4.1 Flash is good at
- Processing large documents or image-heavy data
- Complex tasks requiring multi-step reasoning
- Automated workflows that rely on external tool integration
To-dos to try with DeepSeek V4.1 Flash
- Analyze this 500-page technical manual and summarize the safety protocols.
- Examine these ten product images and generate a structured inventory list.
- Use the search tool to find current industry trends and draft a brief report.
FAQ
- What is the core architecture of DeepSeek V4.1 Flash? It is a sparse mixture-of-experts model built on DeepSeek's proprietary Causal Encoder-Decoder (CED) architecture.
- Can this model process visual information? Yes, the model accepts both text and images as input.
- How much does DeepSeek V4.1 Flash cost? DeepSeek V4.1 Flash costs $0.045 per million input tokens and $0.50 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 0.2 credits ($1 = 100 credits).
- What is the context window of DeepSeek V4.1 Flash? DeepSeek V4.1 Flash can read up to 1M tokens at once and write up to 944K tokens in one reply.
- Can I use DeepSeek V4.1 Flash without coding? Yes. In todo.is you pick DeepSeek V4.1 Flash as your agent's model and write to-dos in plain words, on the web, the Android app, WhatsApp or Telegram. No API key needed: credits are included, or you can bring your own key.
JavaScript is required to use the todo.is app.