Mellum-4b-base is JetBrains' first open-source large language model (LLM) optimized for code-related tasks.
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Codex AlternativesOnly apps categorised as Large Language Model (LLM) Tools
The best Large Language Model (LLM) alternative to Codex is Mellum, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Codex and nine of them are Large Language Model (LLM) Tools so hopefully you can find a suitable replacement. Other interesting Large Language Model (LLM) Tool alternatives to Codex are Rivet AI, Osaurus, OpenPrompt and Dify - LLMOps Platform.
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Codex alternatives are mainly Large Language Model (LLM) Tools, but if you're looking for AI Coding Assistants or AI Chatbots you can filter on that. Other popular filters include Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Codex.
Alternatives list
Visual AI programming platform with a graphical interface for creating, editing, and debugging LLM agent workflows, supporting real-time collaboration, YAML-based version control, open-source TypeScript library integration, and scalable deployment in production environments.
52 Osaurus alternativesAI edge infrastructure for macOS. Run local or cloud models, share tools across apps via MCP, and power AI workflows with a native, always-on runtime.
Copy Entire Folder to ChatGPT. Hit on Star to BookMark this Page ! Newer Release will be even Better.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux
83 Dify - LLMOps Platform alternativesStreamlines AI application development by combining plugin and dataset integration, a unified API, visual orchestration, analytics, annotation tools, prompt engineering support, backend-as-a-service capabilities, and compatibility with multiple modern LLMs.
Cost / License
- Freemium
- Open Source
Application type
Platforms
- Online
- Self-Hosted
- Cloudron
+5
Cost / License
- Free
- Proprietary
Application type
Platforms
- Mac
- Windows
- Linux
- Microsoft Edge
- Google Chrome
- Visual Studio Code
- Microsoft Teams
- Firefox
+1
A new family of code large language models (LLMs) designed to advance autonomous software engineering and code intelligence.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
- Python
AgentOne is an AI agent built to help you get work done across your apps from start to finish. Tell it what you need in plain language, and it can carry out multi-step tasks on its own using the right tools and context from your connected services.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Snapcraft
51 Kimi Code alternativesA coding-focused perk of the Kimi membership, engineered to drop into any dev workflow, answer faster and more reliably, and get programming tasks done in record time.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Windows
- Mac
- Linux
- Visual Studio Code
- Cursor
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