DeepSeek-R1-Lite-Preview
A reasoning-focused AI model available as a free trial APIStrong AIME and MATH reasoning with a transparent thought process
Highlights
What you can do with it
- Run complex data analysis and pattern recognition
- Support scientific computation and experiment design
- Power a backend reasoning engine in an intelligent system
How to use it
- 1 Go to the DeepSeek website and register an account.
- 2 Read the DeepSeek-R1-Lite-Preview API documentation.
- 3 Set up your API call parameters, such as temperature and tokens.
- 4 Make a first call to test its reasoning.
- 5 Use multi-turn dialogue for complex problems and JSON for structured output.
Who it is for
Pros
- Strong reasoning results on AIME and MATH benchmarks
- Transparent, real-time thought process
- Flexible output with JSON and multi-turn dialogue
- Free trial, with open-source and API planned
Limitations
- It is a preview, so behavior and access can change
- The free trial is temporary and pricing is not yet announced
- Longer reasoning means more time and tokens per answer
- Still needs testing and prompt tuning for your specific task
What DeepSeek-R1-Lite-Preview is
DeepSeek-R1-Lite-Preview is an AI model built around reasoning. It reports o1-preview-level performance on the AIME and MATH benchmarks, which are math and problem-solving tests, and its answers get better the longer it spends thinking. A notable feature is its real-time, transparent thought process, so you can follow how it reaches a conclusion. It supports multi-turn dialogue for back-and-forth problem solving and returns structured data through JSON output. Beta features include chat prefix completion and fill-in-the-middle completion. It is offered through an API, so you call it from your own code rather than a chat window. It is available as a free trial, and DeepSeek plans an open-source version and API.
What you can do with it
It is meant for problems that need careful thinking:
- Run complex data analysis and pattern recognition
- Support scientific computation and experiment design
- Power a backend reasoning engine in an intelligent system
- Hold multi-turn conversations to work through hard problems
- Get structured results through JSON output
Who it is for
It targets technical users with demanding tasks:
- Data analysts working on complex analysis and patterns
- Researchers who need help with scientific computation
- Developers adding a reasoning engine to their systems
What to watch out for
This is a preview, so its behavior, limits, and access can change without notice. The free trial is temporary and specific pricing has not been announced, so do not build a paid product on the assumption it stays free. Because reasoning improves with longer thought time, harder questions can take longer and use more tokens, which affects cost and speed once it moves beyond the trial. You should still test and tune it for your own tasks, since benchmark results do not guarantee the same performance on your specific problems. Read the change log and FAQ for updates, since a preview model can shift between releases.
FAQ
What is DeepSeek-R1-Lite-Preview?
It is a reasoning-focused AI model with strong performance on the AIME and MATH benchmarks.
Is it free?
It is currently available as a free trial, with specific pricing still to be announced.
What features does it support?
It supports multi-turn dialogue, JSON output, and beta features like chat prefix completion and FIM completion.
Why it is free
What the official page says： for freefree trial
Free limits, trial length and features are decided by the official site and can change at any time.
Product preview
Screenshot archived from the listing page, for preview only.
