DeepSeek-V4.1-Flash

DeepSeek's V4.1 text model, served over Claude Messages with peak token pricing.

TextClaude MessagesCache Hit Pricing

Context Window

deepseek-v4.1-flash

Max Output

1M tokens

Input

$0.27$0.30

10% off

1M tokens

Output

$1.08$1.20

10% off

1M tokens

Model Codedeepseek-v4.1-flash

Playground

Model Code

deepseek-v4.1-flash

Enter your prompt here...

Output

No output yet

Pricing

Plan	Context Window	Max Output	Input	Output	Cache Write	Cache Read
deepseek-v4.1-flash	-	-	$0.27$0.3010% off 1M tokens	$1.08$1.2010% off 1M tokens	-	$0.0054$0.00610% off 1M tokens

Vendor Direct pricing is shown in USD per 1M tokens.

Peak prices apply at all times; the cached rate applies to cache-hit input tokens.

Cache read or cached input pricing applies to reused prompt tokens.

README

DeepSeek-V4.1-Flash is a DeepSeek text model available through the Claude Messages protocol, billed at fixed peak prices with a lower cached-input rate.

DeepSeek-V4.1-Flash is available through the Claude Messages protocol for text generation workloads.
Peak prices apply at all times: $0.30 input, $0.006 cached input, and $1.20 output per 1M tokens.
The lower cached-input rate can reduce repeated-context costs for stable prompts and shared retrieval context.

API

Use the API docs for request format, parameters, and integration details.

DeepSeek's V4.1 text model, served over Claude Messages with peak token pricing.

Model Code

deepseek-v4.1-flash

View API Docs

API

Endpoint

POST /v1/messages

Authentication

Authorization: Bearer YOUR_REACH_API_KEY
anthropic-version: 2023-06-01
Content-Type: application/json

Example

curl -X POST "https://direct.reachapi.ai/v1/messages" \
  -H "Authorization: Bearer YOUR_REACH_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "YOUR_MODEL_ID",
    "messages": [
      {
        "role": "user",
        "content": "Introduce ReachAPI in one sentence."
      }
    ],
    "max_tokens": 512,
    "temperature": 0.2
  }'

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