Switch from Chat Completions to Responses API for True Multi-Turn Intelligence & CoT Visibility

What TM really needs to implement ASAP is the Responses API. They’re still using the old Chat Completions API, which has two major downsides:

1. No Chain of Thought (CoT) continuity or visibility – In TypingMind’s current Chat Completions setup, the reasoning is not carried over in multi-turn conversations, and the user also cannot see the CoT. This reduces the AI’s intelligence because it can’t build on prior reasoning. With the Responses API, the reasoning from the last message is preserved and passed forward. OpenAI even states:

“The biggest difference, and main reason to migrate from Chat Completions to the Responses API for GPT-5, is support for passing chain of thought (CoT) between turns.” https://platform.openai.com/docs/guides/latest-model#migrating-from-chat-completions-to-responses-api

2. No transparency into the thinking process – Since the current setup hides the CoT, we (users) can’t analyze how the model arrived at its answers. I often review the reasoning, but with TM, we’re stuck without it.