DeepSeek V4.1 Flash Pricing & Token Economics
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.
Normalized Token Pricing Matrix
Real-time input, completion, and cache rates normalized to $/1M tokens.
Cost for prompts, instructions, document retrieval, and system context sent into the model.
Cost for generated text, code, tool calls, and structured JSON responses returned by the model.
Massive 98% savings on repeated context, documents, and system instructions.
Standard industry benchmark assuming 75% prompt reads and 25% completion generation.
DeepSeek V4.1 Flash Monthly Bill Estimator
Estimated monthly costs across four standardized enterprise and developer workloads.
| Workload Scenario | Monthly Token Volume | Standard Bill | With Prompt Caching |
|---|---|---|---|
| Customer Support Chatbot 10M prompt tokens + 2.5M output tokens per month | 12.5M tokens (10M in / 2.5M out) | $3.00/mo | $1.97/mo -34% |
| Document Analysis & RAG 30M prompt tokens (PDFs/context) + 3M output summaries | 33.0M tokens (30M in / 3M out) | $6.30/mo | $3.21/mo -49% |
| Coding Agent / IDE Swarm 60M prompt tokens (repo context) + 15M code completions | 75.0M tokens (60M in / 15M out) | $18.00/mo | $11.83/mo -34% |
| Enterprise Agentic Workflow 120M prompt tokens (reasoning loops) + 30M output actions | 150.0M tokens (120M in / 30M out) | $36.00/mo | $23.65/mo -34% |
Need custom token inputs or prompt volumes?
Use our interactive multi-model token calculator to test exact prompt and completion sliders.
Architecture & Capabilities
Technical parameters, supported modalities, and optimal developer use cases.
🎯 Recommended Use Cases
Ultra-cheap high-speed summarization, classification, token-efficient pipelines
Supported Modalities
📐 Context & Output Limits
- Maximum Context Window: 1,048,576 tokens (1.0M)
- Maximum Output Length: 384,000 tokens
- Speed / Latency Tier: Ultra Fast
- Official Provider: DeepSeek
Frequently Asked Questions
Everything you need to know about DeepSeek V4.1 Flash API pricing and token calculations.
How much does DeepSeek V4.1 Flash cost per 1M tokens?
DeepSeek V4.1 Flash charges $0.15 per 1M input tokens and $0.60 per 1M output tokens. For standard balanced workloads (3:1 input:output ratio), the effective blended rate is $0.263/1M tokens.
Does DeepSeek V4.1 Flash support prompt caching?
Yes. Cached prompt reads are billed at $0.0030 per 1M tokens, saving you up to 98% on repeated context, RAG documents, and system instructions.
What is DeepSeek V4.1 Flash's maximum context window?
DeepSeek V4.1 Flash supports up to 1,048,576 tokens (1.0M) in its context window, allowing you to ingest large files and multi-turn chat history with up to 384,000 tokens generated per response.
How does DeepSeek V4.1 Flash compare to other models?
With a CostRatio rating of A, DeepSeek V4.1 Flash provides competitive token economics for budget & fast tasks. Review the peer comparison table above to compare input and completion rates directly against alternative models.
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