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R1 0528OPEN
May 28th update to the original DeepSeek R1 Performance on par with OpenAI o1, but open-sourced and with fully open reasoning tokens.
Prices update automatically — checked daily against provider list prices.
- $0.91 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 18% of the 200 open-weight models tracked here
- 13 of 15 DeepSeek models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for R1 0528, measured by Artificial Analysis. Higher is better. Measurement mode: May '25.
About this model
R1 0528 is an open-weight AI model by DeepSeek. You can download and self-host it for free; the prices below are hosted-API list prices, tracked daily, for when you prefer convenience over self-hosting.
Frequently asked questions
What is R1 0528?
R1 0528 is an AI language model from DeepSeek. It is open-weight: you can download it and run it on your own hardware, for free.
Is R1 0528 free?
The weights are free and open — you can self-host R1 0528 and pay nothing per token. If you prefer a hosted API, list prices are $0.5 per million input tokens and $2.15 per million output tokens.
What is R1 0528 good at?
Independent benchmarks from Artificial Analysis give it GPQA 81.3%, MMLU-Pro 84.9%, Humanity's Last Exam 15.8%, Long Context Reasoning 55.7%, LiveCodeBench 77%, MATH-500 98.3%, AIME 89.3%, AIME 2025 76%, IFBench 39.6%, τ²-Bench 36.5%, Terminal-Bench Hard 15.9%. It is particularly used for mathematical reasoning.
Can I self-host R1 0528?
Yes. R1 0528 has open weights, so you can download it and run it on your own GPU or server with tools like Ollama, vLLM or llama.cpp — with no per-token cost.