DeepSeek-R1 vs o3-mini
Comparing DeepSeek-R1 and o3-mini across benchmarks, pricing, and capabilities.
DeepSeek · OpenAI · Updated for 2026
Which is better?
DeepSeek-R1 and o3-mini trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, DeepSeek-R1 is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
o3-mini also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose DeepSeek-R1
- cost matters — it's about 2.0x cheaper per token
- you need open weights you can self-host or fine-tune
Choose o3-mini
- you process long inputs — it offers a 200,000 token context window
- you want the most recent training data — it shipped Jan 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-R1 and o3-minidon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-R1 ($0.55/1M tokens) is 2.0x cheaper than o3-mini ($1.10/1M tokens).
For output processing, DeepSeek-R1 ($2.19/1M tokens) is 2.0x cheaper than o3-mini ($4.40/1M tokens).
In conclusion, o3-mini is more expensive than DeepSeek-R1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
o3-mini accepts 200,000 input tokens compared to DeepSeek-R1's 131,072 tokens. DeepSeek-R1 can generate longer responses up to 131,072 tokens, while o3-mini is limited to 100,000 tokens.
License
Usage and distribution terms
DeepSeek-R1 is licensed under MIT, while o3-mini uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-R1 was released on 2025-01-20, while o3-mini was released on 2025-01-30.
o3-mini is 0 month newer than DeepSeek-R1.
Jan 20, 2025
1.6 years ago
Jan 30, 2025
1.6 years ago
1w newerKnowledge Cutoff
When training data ends
o3-mini has a documented knowledge cutoff of 2023-09-30, while DeepSeek-R1's cutoff date is not specified.
We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without DeepSeek-R1's cutoff date.
—
Sep 2023
Provider Availability
DeepSeek-R1 is available from DeepSeek, DeepInfra, Together, Fireworks. o3-mini is available from Azure, OpenAI.
DeepSeek-R1
o3-mini
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek-R1 and o3-mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek-R1 vs o3-mini.