Comprehensive side-by-side LLM comparison
o3 leads with 11.3% higher average benchmark score. o3 offers 37.9K more tokens in context window than DeepSeek-R1-0528. DeepSeek-R1-0528 is $7.35 cheaper per million tokens. o3 supports multimodal inputs. DeepSeek-R1-0528 is available on 3 providers. Overall, o3 is the stronger choice for coding tasks.
DeepSeek
DeepSeek-R1-0528 represents a specific release iteration of the DeepSeek-R1 model, developed to incorporate refinements and improvements from ongoing training. Built to provide enhanced reasoning capabilities based on accumulated insights, it continues the evolution of DeepSeek's reasoning-focused architecture.
OpenAI
o3 represents the next generation in OpenAI's reasoning model series, developed to advance the capabilities of deliberate, step-by-step problem solving. Built to handle increasingly complex challenges across mathematics, science, and coding, it continues the evolution of reasoning-focused AI with improved analytical depth and accuracy.
1 month newer

o3
OpenAI
2025-04-16

DeepSeek-R1-0528
DeepSeek
2025-05-28
Cost per million tokens (USD)

DeepSeek-R1-0528

o3
Context window and performance specifications
Average performance across 7 common benchmarks

DeepSeek-R1-0528

o3
Performance comparison across key benchmark categories

DeepSeek-R1-0528

o3
o3
2024-05-31
Available providers and their performance metrics

DeepSeek-R1-0528
DeepInfra
DeepSeek
Novita

DeepSeek-R1-0528

o3

DeepSeek-R1-0528

o3

o3
OpenAI