DeepSeek R1-0528Open Weight

Released

DeepSeek R1-0528 is an AI model released by DeepSeek on Wednesday, May 28 2025, 65 days after DeepSeek V3-0324. It is an open-weight model — the trained weights are available to download and run. Benchmark results (shown below) cover BullshitBench v2.

Available from

DeepInfra$0.50$2.15160Kfp4
SiliconFlow$0.50$2.18160Kfp8
StreamLake$0.571$2.286128K—
Novita$0.70$2.50160Kfp8
USD per 1M tokensEvery price here is for one million tokens. A token is roughly three-quarters of a word, so a million tokens is about 750,000 words of text.Checked October 18, 2026Third-party rates from openrouter.ai, not the lab’s own list price.

Benchmarks

BullshitBench v2Nonsense detection — Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better.
8%
#89 of 97

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DeepSeek R1-0528

Frequently asked questions

DeepSeek R1-0528 was released by DeepSeek on Wednesday, May 28 2025.

All DeepSeek releases

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