R1 0528

DeepSeek· released 28 May 2025

deepseek/deepseek-r1-0528

Input / 1M tokens: $0.5
Output / 1M tokens: $2.15

Context window164K tokens

Longest answer: 33K tokens

reads textopen weightstool callingreasoning

About

May 28th update to the [original DeepSeek R1](/deepseek/deepseek-r1) Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...

Details

Lab: DeepSeekopenrouter.ai · 3 Oct 2026
Context: 164Kopenrouter.ai · 3 Oct 2026
Input price: $0.5 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $2.15 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 32,768 tokensopenrouter.ai · 3 Oct 2026
Inputs: textopenrouter.ai · 3 Oct 2026
Open weights: Yesopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/deepseek/deepseek-r1-0528· checked 3 Oct 2026