open-r1
Fully open reproduction of DeepSeek-R1 for language modeling tasks.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is open-r1?
Open-r1 is a fully open-source reproduction of the DeepSeek-R1 model, designed to perform various language modeling tasks. It offers developers and researchers access to advanced AI capabilities under an Apache-2.0 license.
Key differentiator
“Open-r1 stands out as a fully open-source alternative to DeepSeek-R1, offering developers and researchers complete transparency and flexibility in their language modeling tasks.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Official repository lacks comprehensive guides, tutorials are sparse and out-of-date
Model training times increase exponentially with larger input sizes, memory usage is high
Fit analysis
Who is it for?
✓ Best for
Researchers looking for a fully open-source alternative to DeepSeek-R1
Developers needing flexibility in self-hosting their models
Projects requiring reproducibility and transparency in AI model usage
✕ Not a fit for
Teams requiring real-time, low-latency responses from the model
Applications that need cloud-based managed services for ease of use
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Alternatives
Works well with
Next step
Get Started with open-r1
Step-by-step setup guide with code examples and common gotchas.