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Devstral Small 1.1 vs GPT-5 Codex
Comprehensive side-by-side LLM comparison
GPT-5 Codex leads with 20.9% higher average benchmark score. Overall, GPT-5 Codex is the stronger choice for coding tasks.
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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.
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OpenAI
GPT-5 Codex was developed as a specialized variant of GPT-5 optimized for programming and software development tasks. Built to understand and generate code across multiple programming languages, it serves developers with enhanced capabilities for code completion, debugging, translation, and explanation of complex codebases.
2 months newer
Devstral Small 1.1
Mistral AI
2025-07-11
GPT-5 Codex
OpenAI
2025-09-15
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Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Devstral Small 1.1
Average Score:53.6%
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GPT-5 Codex
Average Score:74.5%(+20.9%)
Performance comparison across key benchmark categories
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Devstral Small 1.1
Coding53.6%
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GPT-5 Codex
Coding74.5%(+20.9%)
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Knowledge Cutoff
Training data recency comparison
GPT-5 Codex
2024-09-30
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Devstral Small 1.1
1 providers
Mistral AI
Throughput: 137.1 tok/s
Latency: 0.23ms
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GPT-5 Codex
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Devstral Small 1.1
Avg Score:53.6%
Providers:1
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GPT-5 Codex
Avg Score:74.5%(+20.9%)
Providers:0