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deepseek-v4.1-flash pricing and usage · CheaperInference

Model record / DeepSeek

deepseek-v4.1-flash

Access deepseek-v4.1-flash from DeepSeek through one OpenAI-compatible API with live market-linked pricing and usage-based billing.

Text generationVision inputReasoningStreaming45% below list

Input / 1M tokens~~$0.15 list~~$0.0825

Output / 1M tokens~~$0.60 list~~$0.33

Cached input / 1M tokens$0.00165

Current discount45%

Observed reliability

99.86

Successful provider-reaching requests

Output speed

155

Median tokens per second over sustained generations

TTFT

3 s

p50 · p90 8.9 s · n 111,942

Latency

5.6 s

p50 · p90 20.1 s · n 163,703

Evidence strength

—

Provider: DeepSeek
Model ID: deepseek-v4.1-flash
Type: Text generation
Endpoints: /v1/chat/completions, /v1/responses, /v1/messages
Input: image, pdf, text
Output: text
Vision input: Supported
Image editing: Not supported
Video input: Not supported
Reasoning: Supported
Streaming: Supported
Context window: 1,048,576 tokens

POST /v1/chat/completions

Field	Values
reasoning.exclude
max_tokens
reasoning	effort: none, low, high, max; enabled: true or false
stop
temperature
tool_choice
tools

POST /v1/messages

Field	Values
max_tokens
thinking	type: enabled with budget_tokens; output_config.effort: none, low, high, max

Pricing history

See how much this model saves and when its recorded price has been lowest.

Time zone

deepseek-v4.1-flash

Growing confidence

This model averaged 43.1% below comparable direct provider prices across the selected range. Its strongest observed window was 1:00 AM–4:00 PM in UTC.

Last 24 hours

Average saved

43.1%

Last 24 hours

Cheapest time

1:00 AM–4:00 PM

45.0% average savings

Hourly coverage

24/24

24 total observations

Signal quality

Growing

Ready for planning

Typical unit savings$0.08 / 1M input tokens$0.34 / 1M output tokens

Hover a bar for savings per token and observation counts.

Source buckets are UTC; labels are converted to UTC.

Last 24 hours

#2

of 404 ranked models

Last 7 days

#1

of 414 ranked models

Last 30 days

#1

of 414 ranked models

Ready when you are

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Marketplace pricing, capped at list, optimized further.

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POST /v1/chat/completions

curl https://api.cheaperinference.com/v1/chat/completions \  -H "Authorization: Bearer ci_live_YOUR_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "deepseek-v4.1-flash",    "messages": [      {        "role": "user",        "content": "Reply with the single word OK."      }    ],    "max_tokens": 64  }'

POST /v1/responses

curl https://api.cheaperinference.com/v1/responses \  -H "Authorization: Bearer ci_live_YOUR_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "input": [      {        "role": "user",        "content": "Reply with the single word OK."      }    ],    "model": "deepseek-v4.1-flash",    "store": false,    "max_output_tokens": 256  }'

POST /v1/messages

curl https://api.cheaperinference.com/v1/messages \  -H "Authorization: Bearer ci_live_YOUR_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "deepseek-v4.1-flash",    "messages": [      {        "role": "user",        "content": "Reply with the single word OK."      }    ],    "max_tokens": 64  }'