Overview
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...
DeepSeek: R1 0528 in depth
DeepSeek: R1 0528, built by DeepSeek, sits in the chatbots & llms space and is a paid tool starting at $0.50/1M tokens. Our editors rate it 7.6 out of 10 based on capability, ecosystem and value. It handles a context window of 163,840 tokens.
On the feature side, DeepSeek: R1 0528 brings 163,840-token context window, reasoning / chain-of-thought, tool / function calling and structured (json) outputs. These are the capabilities that most shape day-to-day use and separate it from thinner alternatives.
DeepSeek: R1 0528 is most often chosen for research and writing. If that matches your goals, it's a strong candidate to shortlist.
Key features
- ✓163,840-token context window
- ✓Reasoning / chain-of-thought
- ✓Tool / function calling
- ✓Structured (JSON) outputs
- ✓Knowledge cutoff 2025-03-31
Pricing
Pros
Cons
Who should use DeepSeek: R1 0528
- →Anyone looking for a chatbots & llms tool from DeepSeek.
- →Teams and individuals focused on research and writing.
- →Workflows that need a 163,840 tokens context window.
Who should look elsewhere
- →Anyone who needs a free tier — this tool is paid only.
Best for
DeepSeek: R1 0528 alternatives
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Frequently asked questions
Q. Is DeepSeek: R1 0528 free?
No — DeepSeek: R1 0528 is a paid tool, starting at $0.50/1M tokens.
Q. How much does DeepSeek: R1 0528 cost?
DeepSeek: R1 0528 starts at $0.50/1M tokens. API usage is around $0.5 per 1M input tokens and $2.15 per 1M output tokens.
Q. What is DeepSeek: R1 0528 best for?
DeepSeek: R1 0528 is best suited to research and writing, within the chatbots & llms category.
Q. What are the best DeepSeek: R1 0528 alternatives?
Popular alternatives to DeepSeek: R1 0528 include Claude, ChatGPT, Gemini and Anthropic: Claude Sonnet 5. Each trades off price, quality and ecosystem differently.
How we rate AI tools
Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.
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