Boost Your OpenAI Projects: Mastering the Chat Completions API
infrastructure#llm🏛️ Official|Analyzed: Feb 27, 2026 13:30•
Published: Feb 27, 2026 13:27
•1 min read
•Qiita OpenAIAnalysis
This article offers a clear guide to resolving a common error encountered when using OpenAI's API, ensuring developers can smoothly integrate the latest chat models. It highlights the importance of using the correct API endpoint and data structures, leading to more stable and maintainable code. By adopting the Chat Completions API, projects can fully leverage the power of cutting-edge LLMs.
Key Takeaways
- •The article provides a practical solution for developers encountering the "chat model not supported" error in OpenAI's API.
- •The core issue stems from using the older /v1/completions endpoint with current chat models like GPT-3.5-turbo and GPT-4.
- •The recommended fix involves switching to the /v1/chat/completions endpoint and structuring the input as a messages list.
Reference / Citation
View Original"The key to the solution is using the latest Chat Completions API recommended by OpenAI Python SDK v1.0.0 and later."