DeepSeek V3.1 Terminus

Name: DeepSeek: DeepSeek V3.1 Terminus
Brand: deepseek
SKU: deepseek/deepseek-v3.1-terminus
Price: 0.297 USD
Availability: InStock

deepseek/deepseek-v3.1-terminus

$0.297 in · $1.10 out per 1M tokens163k contextSep 22, 2025

about 0.07¢ a message

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

Chat with DeepSeek V3.1 Terminus

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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: $0.297provider $0.27
Output, per 1M tokens: $1.10provider $1.00
Margin: +10%

Context and formats

Context window: 163,840 tokens
Longest answer: 147,456 tokens
Reads: text
Makes: text
First listed: 2025-09-22

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-v3.1-terminus.

About

DeepSeek-V3.1 Terminus is an update to DeepSeek V3.1 that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's...

In DeepSeek's words.

Try it here

Cmd+Enter sends

The answer appears here.

Measured here

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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-v3.1-terminus", "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 V3.1 Terminus price on Antimatter

<a href="https://useantimatter.com/planet/deepseek/deepseek-v3.1-terminus"><img src="https://useantimatter.com/api/badge/price?id=deepseek%2Fdeepseek-v3.1-terminus" alt="DeepSeek V3.1 Terminus price on Antimatter" height="28"></a>

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