deepseek-ai/DeepSeek-R1-0528
DeepSeek-R1-0528 is the May 2025 update to the original DeepSeek-R1. Built on the DeepSeek-V3 backbone with 671B total parameters and 37B active per inference pass (MoE), it achieves performance on par with OpenAI o1. Key improvements include 87.5% on AIME 2025 (up from 70%), reduced hallucinations, enhanced front-end capabilities, and newly added JSON output and function calling support.
api_example.sh
Technical Specifications
Model Architecture & Performance
Pricing
Pay-per-use, no commitments
API Reference
Complete parameter documentation
| Parameter | Type | Default | Description |
|---|---|---|---|
| stream | boolean | true | Enable streaming responses for real-time output. |
| temperature | number | 0.6 | Recommended range 0.5–0.7 (0.6 default) to prevent endless repetitions. |
| max_tokens | number | 16384 | Maximum number of tokens to generate. |
| top_p | number | 0.95 | Nucleus sampling. |
Explore the full request and response schema in our external API documentation
Performance
Strengths & considerations
| Strengths | Considerations |
|---|---|
| 671B total / 37B active MoE — frontier reasoning 87.5% on AIME 2025 (up +17.5% from previous version) Now supports JSON output and function calling Reduced hallucinations vs prior R1 Fully open-source with MIT license Chain-of-thought reasoning with visible traces | 128K max context (shorter than some competitors) Requires very large infrastructure for self-hosting Temperature must stay in 0.5–0.7 range Reasoning traces increase total output length |
Use cases
Recommended applications for this model
Enterprise
Platform Integration
Docker Support
Official Docker images for containerized deployments
Kubernetes Ready
Production-grade KBS manifests and Helm charts
SDK Libraries
Official SDKs for Python, Javascript, Go, and Java
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