DeepSeek V4.1 Flash Fast
DeepSeek V4.1 Flash Fast is DeepSeek's language model with a 1.0M context window and up to 1.0M output tokens, starting at $0.6 / 1M input and $2.40 / 1M output. A lightweight, high-speed large language model tuned for rapid response generation in latency-sensitive applications.
Capabilities
Input1/5
Text·
Image✓
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities4/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
| $0.6 | $2.40 | $0.014 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| DeepSeek V4 Flash 0731 P | — | — | — | — | Available |
| DeepSeek V4.731 Flash US | — | — | — | — | Available |
| DeepSeek V4 420 Flash | — | — | — | — | Available |
| DeepSeek V4.4.1 Flash | — | — | — | — | Available |
| DeepSeek V4.1 Flash Fast | 1.0M | $0.600 | $2.40 | Current | |
| DeepSeek V4.1 Flash Expires Exp | 1.0M | $0.150 | $0.600 | Deprecating | |
| DeepSeek V4.1 Flash Beta | 1.0M | — | — | Available | |
| DeepSeek V4.1 Flash DST | — | — | — | — | Available |
| DeepSeek V4.1 Flash P | — | — | — | — | Available |
| DeepSeek V4.1 Flash US | — | 1.0M | $0.450 | $1.80 | Available |
| DeepSeek V4 Flash Vision Exp | 1.0M | $0.216 | $0.647 | Deprecated |
Other Models
| Model | Tier | Released | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|---|
| DeepSeek V4 Pro | Pro | 1.0M | $0.660 | $1.98 | |
| DeepSeek V4 Pro 0813 P | Pro | — | — | — | — |
| DeepSeek V4 Pro | Pro | — | — | — | — |
| DeepSeek V4 Pro | Pro | 1.0M | $0.250 | $0.870 | |
| DeepSeek V4 Pro 813 | Pro | — | 1.0M | $1.32 | $3.96 |
| DeepSeek V4 Pro US | Pro | — | — | — | — |