Using DeepSeek V4.1 Flash on DeepSeek Platform
Implementation guide · DeepSeek V4.1 · DeepSeek
DeepSeek Platform exposes DeepSeek V4.1 Flash through model ID deepseek-flash. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.
Last refreshed 2026-09-10. Next refresh: weekly.
Quick Start
- 1
- 2Use the DeepSeek Platform SDK or REST API to call
deepseek-flash— see the documentation for request format. - 3
Code Examples
Pricing on DeepSeek Platform
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.15 |
| Output tokens | $0.60 |
Capabilities
About DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is a 552B-parameter (8B prefill / 16B decode activated) mixture-of-experts model with Compressed Expert Dispatch (CED), released September 10, 2026 under the MIT license. It supports 1M-token context, up to 384K output tokens, multimodal vision input, reasoning, function calling, tool use, structured outputs, and prompt caching. Weights are available on Hugging Face. The DeepSeek API serves it as deepseek-flash; legacy API aliases deepseek-v4-flash and deepseek-v4-flash-vision-exp route to this model. Off-peak API pricing: $0.15/1M input, $0.60/1M output (cache read: $0.003/1M); peak hours are 2×.