Devstral Small 2 vs. GPT-5.1-Codex-Max Comparison


Devstral Small 2 Mistral AI	GPT-5.1-Codex-Max OpenAI	+	+
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About Devstral Small 2 is the compact, 24 billion-parameter variant of the new coding-focused model family from Mistral AI, released under the permissive Apache 2.0 license to enable both local deployment and API use. Alongside its larger sibling (Devstral 2), this model brings “agentic coding” capabilities to environments with modest compute: it supports a large 256K-token context window, enabling it to understand and make changes across entire codebases. On the standard code-generation benchmark (SWE-Bench Verified), Devstral Small 2 scores around 68.0%, placing it among open-weight models many times its size. Because of its reduced size and efficient design, Devstral Small 2 can run on a single GPU or even CPU-only setups, making it practical for developers, small teams, or hobbyists without access to data-center hardware. Despite its compact footprint, Devstral Small 2 retains key capabilities of larger models; it can reason across multiple files and track dependencies.	About GPT-5.1-Codex-Max is the high-capability variant of the GPT-5.1-Codex series designed specifically for software engineering and agentic code workflows. It builds on the base GPT-5.1 architecture with a focus on long-horizon tasks such as full project generation, large-scale refactoring, and autonomous multi-step bug and test management. It introduces adaptive reasoning, meaning the system dynamically allocates more compute for complex problems and less for simpler ones, to improve efficiency and output quality. It also supports tool use (IDE-integrated workflows, version control, CI/CD pipelines) and offers higher fidelity in code review, debugging, and agentic behavior than general-purpose models. Alongside Max, there are lighter variants such as Codex-Mini for cost-sensitive or scale use-cases. The GPT-5.1-Codex family is available in developer previews, including via integrations like GitHub Copilot.
Platforms Supported Windows Mac Linux Cloud On-Premises iPhone iPad Android Chromebook	Platforms Supported Windows Mac Linux Cloud On-Premises iPhone iPad Android Chromebook
Audience Developers, small teams, contributors, and startups searching for a tool to handle real-world codebase tasks like refactoring, bug fixes, or multi-file edits	Audience Development teams and engineering organizations requiring a tool for generating, refactoring and maintaining large-scale codebases
Support Phone Support 24/7 Live Support Online	Support Phone Support 24/7 Live Support Online
API Offers API	API Offers API
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing Free Free Version Free Trial	Pricing No information available. Free Version Free Trial
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Training Documentation Webinars Live Online In Person	Training Documentation Webinars Live Online In Person
Company Information Mistral AI Founded: 2023 France mistral.ai/news/devstral-2-vibe-cli	Company Information OpenAI Founded: 2015 United States openai.com/index/gpt-5-1-codex-max/
Alternatives DeepCoder Agentica Project	Alternatives Claude Opus 4.5 Anthropic
DeepSWE Agentica Project	Claude Sonnet 4.5 Anthropic
Nemotron 3 Nano NVIDIA	Devstral 2 Mistral AI
Devstral 2 Mistral AI	GPT-5.1-Codex OpenAI
Devstral Mistral AI View All	GPT‑5-Codex OpenAI View All
Categories AI Coding Models AI Models	Categories Agentic AI AI Coding Agents AI Coding Models AI Models

Integrations C C++ Cline Elixir GPT-5.2 Instant GPT-5.2 Pro GPT-5.2 Thinking GPT-5.3 Instant GPT-5.4 Pro Java Julia Kotlin OpenAI Codex PHP Python R Scala TypeScript Verdent Visual Basic Show More Integrations View All 5 Integrations	Integrations C C++ Cline Elixir GPT-5.2 Instant GPT-5.2 Pro GPT-5.2 Thinking GPT-5.3 Instant GPT-5.4 Pro Java Julia Kotlin OpenAI Codex PHP Python R Scala TypeScript Verdent Visual Basic Show More Integrations View All 49 Integrations
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