> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hostlinku.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DeepSeek-V4.1-Flash Fast

> DeepSeek-V4.1-Flash Fast from DeepSeek, with a 1,000,000-token catalog context.

| Properties | Value |
| - | - |
| Provider | DeepSeek |
| Slug | `deepseek-v4-1-flash-fast` |
| Release | 2026-09-14 |
| Catalog context | 1,000,000 tokens |
| Max catalog output | 384,000 tokens |
| Service Mode | Dedicated |

## Capabilities

`text`, `tool-calling`, `function-calling`, `structured-outputs`, `json-mode`, `streaming`, `reasoning`, `code-generation`, `long-context`, `multilingual`, `vision`, `image-input`, `multimodal`.

## Price

Updated **November 6, 2026**. [Current pricing](https://hostlinku.com/models/deepseek-v4-1-flash-fast) follows the Service Mode API key. **Prices are shown in USD**. `—` means the rate is not listed. Tiers are based on the number of prompt tokens.

| Item | Unit | Tier | Dedicated (USD) |
| - | - | - | - |
| Input (prompt) | per 1M tokens | Basics | 0.2875 |
| Output (completion) | per 1M tokens | Basics | 1.15 |
| Cache read | per 1M tokens | Basics | 0.00575 |

## Supported endpoints

| Endpoint | Format | Support |
| - | - | - |
| `POST /v1/chat/completions` | OpenAI Chat Completions | available |
| `POST /v1/messages` | Anthropic Messages | adapted (bridge) |
| `POST /v1/responses` | OpenAI Responses | adapted (bridge) |

[Compatibility limits](https://docs.hostlinku.com/en/api-reference.md#kompatibilitas-model-dan-tool).


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