R1 0528

Name: DeepSeek: R1 0528
Brand: deepseek
SKU: deepseek/deepseek-r1-0528
Price: 0.55 USD
Availability: InStock

deepseek/deepseek-r1-0528

May 28th update to the original DeepSeek R1 Performance on par with OpenAI o1, but open-sourced and with fully open reasoning tokens.

$0.55 in · $2.365 out per 1M tokens163k contextMay 28, 2025

about 0.1¢ a message

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

Chat with R1 0528

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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: $0.55provider $0.50
Output, per 1M tokens: $2.365provider $2.15
Cached input, per 1M: $0.385provider $0.35
Margin: +10%

Context and formats

Context window: 163,840 tokens
Longest answer: 32,768 tokens
Reads: text
Makes: text
First listed: 2025-05-28

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-r1-0528.

About

May 28th update to the original DeepSeek R1 Performance on par with OpenAI o1, but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...

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-r1-0528", "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.

<a href="https://useantimatter.com/planet/deepseek/deepseek-r1-0528"><img src="https://useantimatter.com/api/badge/price?id=deepseek%2Fdeepseek-r1-0528" alt="R1 0528 price on Antimatter" height="28"></a>

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