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DeepSeek: deepseek-r1-0528
deepseek-r1-0528
128K context163.8K outReasoningToolsCacheStructured
Released May 28, 2025Knowledge cutoff Mar 2025Updated Jul 11, 2026
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 an inference pass. Fully open-source model.
Pricing
Input price
$1.12/ 1M tokens$3.0063% off
Output price
$4.48/ 1M tokens$12.0063% off
Context window 163.8K tokensCompatible endpoints openaiVendor DeepSeek
Uptime
Performance
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Usage & Ranking
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Supported parameters
All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.
| Parameter | Providers | Default |
|---|---|---|
| frequency_penalty | All providers | Not sent by default |
| include_reasoning | All providers | - |
| logit_bias | Some providers | - |
| logprobs | Some providers | - |
| max_tokens | All providers | - |
| min_p | Some providers | - |
| presence_penalty | All providers | - |
| reasoning | All providers | - |
| repetition_penalty | All providers | - |
| response_format | All providers | - |
| seed | All providers | - |
| stop | All providers | - |
| structured_outputs | All providers | - |
| temperature | All providers | Not sent by default |
| tool_choice | All providers | - |
| tools | All providers | - |
| top_k | All providers | - |
| top_logprobs | Some providers | - |
| top_p | All providers | Not sent by default |