Outdated training data limits support for modern frameworks and libraries
7/10 HighCodex operates on a frozen training dataset with no internet access, unable to pull updates on new libraries, frameworks, tools, or APIs released after its training cutoff. This forces developers working with cutting-edge tech stacks to work around missing knowledge or use outdated patterns.
Sources
- Hands-On with MCP-Enabled Coding Assistants: Progress and Pain ...
- OpenAI Codex: A Game Changer for Developers or a Threat to Their Craft? - Dedi Rock
- OpenAI Codex: Innovation in Coding or Unfair to Developers?
- OpenAI Codex: Revolutionizing Code or Ripping Off Developers?
- What are the limitations of Codex? - Milvus
- OpenAI Codex: Revolutionizing Code or Ripping Off ...
Collection History
Installing Tailwind 4 (released in January 2025) proved challenging as it's too recent for the models' training data. Cursor particularly struggled, repeatedly 'respectfully disagreeing' with correct installation instructions, even when provided with official documentation links.
Codex doesn't have access to the internet, which means it can't pull in updates on new libraries, frameworks, or tools that have emerged since its training cutoff... it struggles to handle the latest tech stacks, APIs, or versions that could be essential for a modern project.