Antimatter
DeepSeek

DeepSeek V4.1 Flash (batch)

deepseek/deepseek-v4.1-flash:batch

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture.

$0.1232 in · $0.3696 out per 1M tokens1M contextSep 10, 2026

about 0.02¢ a message

A typical message: about 500 tokens you send and 500 it writes.

Chat with DeepSeek V4.1 Flash (batch)
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Also:DeepSeek V4.1 Flash

Spec sheet

Published facts from the catalog, billed prices and what we measured here. Anything not measured says so.

Price, billed here

Input, per 1M tokens
$0.1232provider $0.112
Output, per 1M tokens
$0.3696provider $0.336
Cached input, per 1M
$0.003696provider $0.00336
Margin
+10%

Context and formats

Context window
1,048,576 tokens
Longest answer
131,072 tokens
Reads
text and images
Makes
text
First listed
2026-09-10

Measured here, last 7 days

First token, median
not measured
Answered without error
not measured

Tools and JSON

Tool calling
declaredthe provider's claim, not yet measured here
JSON output
declaredthe provider's claim, not yet measured here

Price and latency history as JSON: GET /api/planet/history?id=deepseek/deepseek-v4.1-flash:batch.

About

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...

In DeepSeek's words.

Try it here

The answer appears here.

Measured here

Call it

Use one OpenAI compatible endpoint, this model's id and an am_live_ key from the dashboard. You can also try it in chat first with no key.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "deepseek/deepseek-v4.1-flash:batch", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

Embed this

A badge showing this model's live price per million tokens, as billed here, for a README or a site. It links back to this page.

DeepSeek V4.1 Flash (batch) price on Antimatter
<a href="https://useantimatter.com/planet/deepseek/deepseek-v4.1-flash%3Abatch"><img src="https://useantimatter.com/api/badge/price?id=deepseek%2Fdeepseek-v4.1-flash%3Abatch" alt="DeepSeek V4.1 Flash (batch) price on Antimatter" height="28"></a>

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