DeepSeek V4.1 Flash on DeepSeek Platform
DeepSeek V4.1 · DeepSeek
Last refreshed 2026-10-17. Next refresh: weekly.
Why use DeepSeek V4.1 Flash on DeepSeek Platform?
DeepSeek Platform offers DeepSeek V4.1 Flash with pay-as-you-go pricing at $0.30/1M input tokens. DeepSeek is an advanced AI platform specializing in powerful models for coding, mathematics, and reasoning tasks.
Compare DeepSeek V4.1 Flash across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: deepseek-flashdeepseek-flashRequest example
deepseek-flash.Gotchas
- Use provider model ID "deepseek-flash", not the LLMReference slug "deepseek-v4.1-flash".
Compare DeepSeek V4.1 Flash Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| DeepSeek Platform | $0.30 | $1.20 |
| OpenRouter | $0.30 | $1.20 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.30 |
| Output tokens | $1.20 |
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. On October 17, 2026 DeepSeek replaced it on its API, web and app with DeepSeek V4.1 Flash 1017; the API name deepseek-flash now serves the 1017 version. The September weights remain on Hugging Face and third-party hosts still serve them.