+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Devstral-2-123B vs o3 mini
Comprehensive side-by-side LLM comparison
o3 mini offers 35.8K more tokens in context window than Devstral-2-123B. Devstral-2-123B is $1.50 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
+
+
+
+
Mistral AI
Devstral 2, released by Mistral AI on December 9, 2025, is a 123 billion parameter dense transformer model specifically designed for software engineering tasks. It features a 256K token context window and achieved 72.2% on SWE-bench Verified at release, making it a competitive open-weight option for automated coding and agentic development. Devstral 2 targets code generation, multi-file software engineering, and agentic development workflows under a modified MIT license.
+
+
+
+
OpenAI
OpenAI o3 mini, released by OpenAI in January 2025, is a compact reasoning model from the o3 family designed for efficient, cost-effective STEM problem-solving. It features a 200K token context window and adjustable chain-of-thought effort settings, allowing developers to trade reasoning depth for speed. o3 mini targets science, mathematics, and coding applications where lower inference cost and faster response times are a priority.
10 months newer
o3 mini
OpenAI
2025-01-31
Devstral-2-123B
Mistral AI
2025-12-09
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Devstral-2-123B
Input:$1.00
Output:$3.00($1.50 cheaper)
+
+
+
+
o3 mini
Input:$1.10
Output:$4.40
Performance Metrics
Context window and performance specifications
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Devstral-2-123B
1 providers
OpenRouter
+
+
+
+
o3 mini
1 providers
+
+
+
+
Devstral-2-123B
Avg Score:0.0%
Providers:1
+
+
+
+
o3 mini
Avg Score:0.0%
Providers:1