DeepSeek V4.1 Flash Fast is a lower-latency serving tier of DeepSeek V4.1 Flash, the same model served for faster output. It is a Mixture-of-Experts model with 552B backbone parameters (8B active on input, 16B on output) and a 1M-token context window, with strong reasoning, coding, and agentic performance.
Modalities
In / out price
$0.60 / $2.40per 1M
Cached price
$0.014per 1M
Context
1M
Max output
131K
Providers
1 routeCompare providers by price, privacy, and speed.
Baseten | Private | $0.60 | $2.40 | $0.014 | 1M | 131K | — | — |
Privacy
2 / 4Private routing
Private tier
- Anonymous
- Private
- TEE
- E2EE
Prompt and response content is not retained after the request. Request content is visible to the inference runtime while it is being processed. Learn more
Features
4Streaming
Tool calling
Reasoning
Prompt caching
Uptime
FAQ
Common questions about DeepSeek V4.1 Flash Fast.