Model Comparison

DeepSeek-R1-0528 vs o3-mini

DeepSeek-R1-0528 significantly outperforms across most benchmarks. DeepSeek-R1-0528 is 2.1x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

DeepSeek-R1-0528 outperforms in 4 benchmarks (Aider-Polyglot, AIME 2024, GPQA, SimpleQA), while o3-mini is better at 1 benchmark (SWE-Bench Verified).

DeepSeek-R1-0528 significantly outperforms across most benchmarks.

Tue Apr 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-R1-0528 costs less

For input processing, DeepSeek-R1-0528 ($0.50/1M tokens) is 2.2x cheaper than o3-mini ($1.10/1M tokens).

For output processing, DeepSeek-R1-0528 ($2.15/1M tokens) is 2.0x cheaper than o3-mini ($4.40/1M tokens).

In conclusion, o3-mini is more expensive than DeepSeek-R1-0528.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Apr 21 2026 • llm-stats.com
DeepSeek
DeepSeek-R1-0528
Input tokens$0.50
Output tokens$2.15
Best providerDeepinfra
OpenAI
o3-mini
Input tokens$1.10
Output tokens$4.40
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

o3-mini accepts 200,000 input tokens compared to DeepSeek-R1-0528's 131,072 tokens. DeepSeek-R1-0528 can generate longer responses up to 131,072 tokens, while o3-mini is limited to 100,000 tokens.

DeepSeek
DeepSeek-R1-0528
Input131,072 tokens
Output131,072 tokens
OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Tue Apr 21 2026 • llm-stats.com

License

Usage and distribution terms

DeepSeek-R1-0528 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.

DeepSeek-R1-0528

MIT

Open weights

o3-mini

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek-R1-0528 was released on 2025-05-28, while o3-mini was released on 2025-01-30.

DeepSeek-R1-0528 is 4 months newer than o3-mini.

DeepSeek-R1-0528

May 28, 2025

10 months ago

3mo newer
o3-mini

Jan 30, 2025

1.2 years ago

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while DeepSeek-R1-0528'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-R1-0528's cutoff date.

DeepSeek-R1-0528

—

o3-mini

Sep 2023

Provider Availability

DeepSeek-R1-0528 is available from DeepInfra, DeepSeek, Novita. o3-mini is available from Azure, OpenAI.

DeepSeek-R1-0528

deepinfra logo
Deepinfra
Input Price:Input: $0.50/1MOutput Price:Output: $2.15/1M
deepseek logo
DeepSeek
Input Price:Input: $0.55/1MOutput Price:Output: $2.19/1M
novita logo
Novita
Input Price:Input: $0.70/1MOutput Price:Output: $2.50/1M

o3-mini

azure logo
Azure
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

DeepSeek
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher Aider-Polyglot score (71.6% vs 66.7%)
Higher AIME 2024 score (91.4% vs 87.3%)
Higher GPQA score (81.0% vs 77.2%)
Higher SimpleQA score (92.3% vs 15.0%)
OpenAI
Larger context window (200,000 tokens)
Higher SWE-Bench Verified score (49.3% vs 44.6%)

Detailed Comparison

AI Model Comparison Table
Feature
DeepSeek
DeepSeek-R1-0528
OpenAI
o3-mini

FAQ

Common questions about DeepSeek-R1-0528 vs o3-mini

DeepSeek-R1-0528 significantly outperforms across most benchmarks. DeepSeek-R1-0528 is made by DeepSeek and o3-mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
DeepSeek-R1-0528 scores MMLU-Redux: 93.4%, SimpleQA: 92.3%, AIME 2024: 91.4%, AIME 2025: 87.5%, MMLU-Pro: 85.0%. o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%.
DeepSeek-R1-0528 is 2.2x cheaper for input tokens. DeepSeek-R1-0528 costs $0.50/M input and $2.15/M output via deepinfra. o3-mini costs $1.10/M input and $4.40/M output via azure.
DeepSeek-R1-0528 supports 131K tokens and o3-mini supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (131K vs 200K), input pricing ($0.50 vs $1.10/M), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.
DeepSeek-R1-0528 is developed by DeepSeek and o3-mini is developed by OpenAI.