Comprehensive side-by-side LLM comparison
o3 leads with 15.5% higher average benchmark score. o3 offers 44.0K more tokens in context window than Devstral Small 1.1. Devstral Small 1.1 is $9.60 cheaper per million tokens. o3 supports multimodal inputs. Overall, o3 is the stronger choice for coding tasks.
Mistral AI
Devstral Small was developed as a more efficient development-focused model, designed to bring software engineering assistance to resource-conscious deployments. Built to provide coding capabilities with reduced computational requirements, it enables developer tools in environments where efficiency is paramount.
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.
2 months newer

o3
OpenAI
2025-04-16

Devstral Small 1.1
Mistral AI
2025-07-11
Cost per million tokens (USD)

Devstral Small 1.1

o3
Context window and performance specifications
Average performance across 1 common benchmarks

Devstral Small 1.1

o3
Performance comparison across key benchmark categories

Devstral Small 1.1

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

Devstral Small 1.1
Mistral AI

o3

Devstral Small 1.1

o3

Devstral Small 1.1

o3
OpenAI